Desktop Browsers
(click anywhere for more info)


brave
1.33

brave
1.33

private

brave
1.33

Tor

chrome
96.0

chrome
96.0

private

edge
96.0

edge
96.0

private

firefox
95.0

firefox
95.0

private

opera
82.0

opera
82.0

private

safari
15.1

safari
15.1

private

tor
11.0

vivaldi
5.0

vivaldi
5.0

private
State Partitioning testsA common vulnerability of web browsers is that they allow tracking companies to 'tag' your browser with some data ('state') that identifies you. When third-party trackers are embedded in websites, they can see this identifying data as you browse to different websites. Fortunately, it is possible for this category of leaks to be fixed by partitioning all data stored in the browser such that no data can be shared between websites.
Alt-SvcAlt-Svc allows the server to indicate to the web browser that a resource should be loaded on a different server. Because this is a persistent setting, it could be used to track users across websites if it is not correctly partitioned.
  write: async () => { // Clear Alt-Svc caching first. let responseText = ""; for (let i = 0; i < 10 && responseText !== "h2"; ++i) { responseText = await fetchText("https://h3.arthuredelstein.net:4433/clear"); console.log("clear", responseText, i); await sleepMs(10); } if (responseText !== "h2") { // Clearing failed. throw new Error("Unsupported"); } // Store "h3" state in Alt-Svc cache for (let i = 0; i < 10 && responseText !== "h3"; ++i) { responseText = await fetchText("https://h3.arthuredelstein.net:4433/protocol"); console.log("protocol", responseText, i); await sleepMs(10); } if (responseText !== "h3") { // Storage failed. throw new Error("Unsupported"); } } read: () => fetchText("https://h3.arthuredelstein.net:4433/protocol") result, same first party: h3, h3, h3, h3, h3 result, different first party: h2, h2, h2, h2, h2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async () => { // Clear Alt-Svc caching first. let responseText = ""; for (let i = 0; i < 10 && responseText !== "h2"; ++i) { responseText = await fetchText("https://h3.arthuredelstein.net:4433/clear"); console.log("clear", responseText, i); await sleepMs(10); } if (responseText !== "h2") { // Clearing failed. throw new Error("Unsupported"); } // Store "h3" state in Alt-Svc cache for (let i = 0; i < 10 && responseText !== "h3"; ++i) { responseText = await fetchText("https://h3.arthuredelstein.net:4433/protocol"); console.log("protocol", responseText, i); await sleepMs(10); } if (responseText !== "h3") { // Storage failed. throw new Error("Unsupported"); } } read: () => fetchText("https://h3.arthuredelstein.net:4433/protocol") result, same first party: h3, h3, h3, h3, h3 result, different first party: h2, h2, h2, h2, h2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
write: async () => { // Clear Alt-Svc caching first. let responseText = ""; for (let i = 0; i < 10 && responseText !== "h2"; ++i) { responseText = await fetchText("https://h3.arthuredelstein.net:4433/clear"); console.log("clear", responseText, i); await sleepMs(10); } if (responseText !== "h2") { // Clearing failed. throw new Error("Unsupported"); } // Store "h3" state in Alt-Svc cache for (let i = 0; i < 10 && responseText !== "h3"; ++i) { responseText = await fetchText("https://h3.arthuredelstein.net:4433/protocol"); console.log("protocol", responseText, i); await sleepMs(10); } if (responseText !== "h3") { // Storage failed. throw new Error("Unsupported"); } } read: () => fetchText("https://h3.arthuredelstein.net:4433/protocol") result, same first party: h2, h2, h2, h2, h2 result, different first party: h2, h2, h2, h2, h2 unsupported: true, true, true, true, true passed: undefined test failed: false, false, false, false, false
  write: async () => { // Clear Alt-Svc caching first. let responseText = ""; for (let i = 0; i < 10 && responseText !== "h2"; ++i) { responseText = await fetchText("https://h3.arthuredelstein.net:4433/clear"); console.log("clear", responseText, i); await sleepMs(10); } if (responseText !== "h2") { // Clearing failed. throw new Error("Unsupported"); } // Store "h3" state in Alt-Svc cache for (let i = 0; i < 10 && responseText !== "h3"; ++i) { responseText = await fetchText("https://h3.arthuredelstein.net:4433/protocol"); console.log("protocol", responseText, i); await sleepMs(10); } if (responseText !== "h3") { // Storage failed. throw new Error("Unsupported"); } } read: () => fetchText("https://h3.arthuredelstein.net:4433/protocol") result, same first party: h3, h3, h3, h3, h3 result, different first party: h3, h3, h3, h3, h3 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async () => { // Clear Alt-Svc caching first. let responseText = ""; for (let i = 0; i < 10 && responseText !== "h2"; ++i) { responseText = await fetchText("https://h3.arthuredelstein.net:4433/clear"); console.log("clear", responseText, i); await sleepMs(10); } if (responseText !== "h2") { // Clearing failed. throw new Error("Unsupported"); } // Store "h3" state in Alt-Svc cache for (let i = 0; i < 10 && responseText !== "h3"; ++i) { responseText = await fetchText("https://h3.arthuredelstein.net:4433/protocol"); console.log("protocol", responseText, i); await sleepMs(10); } if (responseText !== "h3") { // Storage failed. throw new Error("Unsupported"); } } read: () => fetchText("https://h3.arthuredelstein.net:4433/protocol") result, same first party: h3, h3, h3, h3, h3 result, different first party: h3, h3, h3, h3, h3 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async () => { // Clear Alt-Svc caching first. let responseText = ""; for (let i = 0; i < 10 && responseText !== "h2"; ++i) { responseText = await fetchText("https://h3.arthuredelstein.net:4433/clear"); console.log("clear", responseText, i); await sleepMs(10); } if (responseText !== "h2") { // Clearing failed. throw new Error("Unsupported"); } // Store "h3" state in Alt-Svc cache for (let i = 0; i < 10 && responseText !== "h3"; ++i) { responseText = await fetchText("https://h3.arthuredelstein.net:4433/protocol"); console.log("protocol", responseText, i); await sleepMs(10); } if (responseText !== "h3") { // Storage failed. throw new Error("Unsupported"); } } read: () => fetchText("https://h3.arthuredelstein.net:4433/protocol") result, same first party: h3, h3, h3, h3, h3 result, different first party: h3, h3, h3, h3, h3 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async () => { // Clear Alt-Svc caching first. let responseText = ""; for (let i = 0; i < 10 && responseText !== "h2"; ++i) { responseText = await fetchText("https://h3.arthuredelstein.net:4433/clear"); console.log("clear", responseText, i); await sleepMs(10); } if (responseText !== "h2") { // Clearing failed. throw new Error("Unsupported"); } // Store "h3" state in Alt-Svc cache for (let i = 0; i < 10 && responseText !== "h3"; ++i) { responseText = await fetchText("https://h3.arthuredelstein.net:4433/protocol"); console.log("protocol", responseText, i); await sleepMs(10); } if (responseText !== "h3") { // Storage failed. throw new Error("Unsupported"); } } read: () => fetchText("https://h3.arthuredelstein.net:4433/protocol") result, same first party: h3, h3, h3, h3, h3 result, different first party: h3, h3, h3, h3, h3 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async () => { // Clear Alt-Svc caching first. let responseText = ""; for (let i = 0; i < 10 && responseText !== "h2"; ++i) { responseText = await fetchText("https://h3.arthuredelstein.net:4433/clear"); console.log("clear", responseText, i); await sleepMs(10); } if (responseText !== "h2") { // Clearing failed. throw new Error("Unsupported"); } // Store "h3" state in Alt-Svc cache for (let i = 0; i < 10 && responseText !== "h3"; ++i) { responseText = await fetchText("https://h3.arthuredelstein.net:4433/protocol"); console.log("protocol", responseText, i); await sleepMs(10); } if (responseText !== "h3") { // Storage failed. throw new Error("Unsupported"); } } read: () => fetchText("https://h3.arthuredelstein.net:4433/protocol") result, same first party: h3, h3, h3, h3, h3 result, different first party: h2, h2, h3, h2, h3 unsupported: false, false, true, false, true passed: true, true, true test failed: false, false, false, false, false
  write: async () => { // Clear Alt-Svc caching first. let responseText = ""; for (let i = 0; i < 10 && responseText !== "h2"; ++i) { responseText = await fetchText("https://h3.arthuredelstein.net:4433/clear"); console.log("clear", responseText, i); await sleepMs(10); } if (responseText !== "h2") { // Clearing failed. throw new Error("Unsupported"); } // Store "h3" state in Alt-Svc cache for (let i = 0; i < 10 && responseText !== "h3"; ++i) { responseText = await fetchText("https://h3.arthuredelstein.net:4433/protocol"); console.log("protocol", responseText, i); await sleepMs(10); } if (responseText !== "h3") { // Storage failed. throw new Error("Unsupported"); } } read: () => fetchText("https://h3.arthuredelstein.net:4433/protocol") result, same first party: h3, h3, h3, h3, h3 result, different first party: h2, h2, h2, h2, h2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async () => { // Clear Alt-Svc caching first. let responseText = ""; for (let i = 0; i < 10 && responseText !== "h2"; ++i) { responseText = await fetchText("https://h3.arthuredelstein.net:4433/clear"); console.log("clear", responseText, i); await sleepMs(10); } if (responseText !== "h2") { // Clearing failed. throw new Error("Unsupported"); } // Store "h3" state in Alt-Svc cache for (let i = 0; i < 10 && responseText !== "h3"; ++i) { responseText = await fetchText("https://h3.arthuredelstein.net:4433/protocol"); console.log("protocol", responseText, i); await sleepMs(10); } if (responseText !== "h3") { // Storage failed. throw new Error("Unsupported"); } } read: () => fetchText("https://h3.arthuredelstein.net:4433/protocol") result, same first party: h3, h3, h3, h3, h3 result, different first party: h3, h3, h3, h3, h3 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async () => { // Clear Alt-Svc caching first. let responseText = ""; for (let i = 0; i < 10 && responseText !== "h2"; ++i) { responseText = await fetchText("https://h3.arthuredelstein.net:4433/clear"); console.log("clear", responseText, i); await sleepMs(10); } if (responseText !== "h2") { // Clearing failed. throw new Error("Unsupported"); } // Store "h3" state in Alt-Svc cache for (let i = 0; i < 10 && responseText !== "h3"; ++i) { responseText = await fetchText("https://h3.arthuredelstein.net:4433/protocol"); console.log("protocol", responseText, i); await sleepMs(10); } if (responseText !== "h3") { // Storage failed. throw new Error("Unsupported"); } } read: () => fetchText("https://h3.arthuredelstein.net:4433/protocol") result, same first party: h3, h3, h3, h3, h3 result, different first party: h3, h3, h3, h3, h3 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
write: async () => { // Clear Alt-Svc caching first. let responseText = ""; for (let i = 0; i < 10 && responseText !== "h2"; ++i) { responseText = await fetchText("https://h3.arthuredelstein.net:4433/clear"); console.log("clear", responseText, i); await sleepMs(10); } if (responseText !== "h2") { // Clearing failed. throw new Error("Unsupported"); } // Store "h3" state in Alt-Svc cache for (let i = 0; i < 10 && responseText !== "h3"; ++i) { responseText = await fetchText("https://h3.arthuredelstein.net:4433/protocol"); console.log("protocol", responseText, i); await sleepMs(10); } if (responseText !== "h3") { // Storage failed. throw new Error("Unsupported"); } } read: () => fetchText("https://h3.arthuredelstein.net:4433/protocol") result, same first party: h2, h2, h2, h2, h2 result, different first party: h2, h2, h2, h2, h2 unsupported: true, true, true, true, true passed: undefined test failed: false, false, false, false, false
write: async () => { // Clear Alt-Svc caching first. let responseText = ""; for (let i = 0; i < 10 && responseText !== "h2"; ++i) { responseText = await fetchText("https://h3.arthuredelstein.net:4433/clear"); console.log("clear", responseText, i); await sleepMs(10); } if (responseText !== "h2") { // Clearing failed. throw new Error("Unsupported"); } // Store "h3" state in Alt-Svc cache for (let i = 0; i < 10 && responseText !== "h3"; ++i) { responseText = await fetchText("https://h3.arthuredelstein.net:4433/protocol"); console.log("protocol", responseText, i); await sleepMs(10); } if (responseText !== "h3") { // Storage failed. throw new Error("Unsupported"); } } read: () => fetchText("https://h3.arthuredelstein.net:4433/protocol") result, same first party: h2, h2, h2, h2, h2 result, different first party: h2, h2, h2, h2, h2 unsupported: true, true, true, true, true passed: undefined test failed: false, false, false, false, false
write: async () => { // Clear Alt-Svc caching first. let responseText = ""; for (let i = 0; i < 10 && responseText !== "h2"; ++i) { responseText = await fetchText("https://h3.arthuredelstein.net:4433/clear"); console.log("clear", responseText, i); await sleepMs(10); } if (responseText !== "h2") { // Clearing failed. throw new Error("Unsupported"); } // Store "h3" state in Alt-Svc cache for (let i = 0; i < 10 && responseText !== "h3"; ++i) { responseText = await fetchText("https://h3.arthuredelstein.net:4433/protocol"); console.log("protocol", responseText, i); await sleepMs(10); } if (responseText !== "h3") { // Storage failed. throw new Error("Unsupported"); } } read: () => fetchText("https://h3.arthuredelstein.net:4433/protocol") result, same first party: h2, h2, h2, h2, h2 result, different first party: h2, h2, h2, h2, h2 unsupported: true, true, true, true, true passed: undefined test failed: false, false, false, false, false
  write: async () => { // Clear Alt-Svc caching first. let responseText = ""; for (let i = 0; i < 10 && responseText !== "h2"; ++i) { responseText = await fetchText("https://h3.arthuredelstein.net:4433/clear"); console.log("clear", responseText, i); await sleepMs(10); } if (responseText !== "h2") { // Clearing failed. throw new Error("Unsupported"); } // Store "h3" state in Alt-Svc cache for (let i = 0; i < 10 && responseText !== "h3"; ++i) { responseText = await fetchText("https://h3.arthuredelstein.net:4433/protocol"); console.log("protocol", responseText, i); await sleepMs(10); } if (responseText !== "h3") { // Storage failed. throw new Error("Unsupported"); } } read: () => fetchText("https://h3.arthuredelstein.net:4433/protocol") result, same first party: h3, h3, h3, h3, h3 result, different first party: h3, h3, h3, h3, h3 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async () => { // Clear Alt-Svc caching first. let responseText = ""; for (let i = 0; i < 10 && responseText !== "h2"; ++i) { responseText = await fetchText("https://h3.arthuredelstein.net:4433/clear"); console.log("clear", responseText, i); await sleepMs(10); } if (responseText !== "h2") { // Clearing failed. throw new Error("Unsupported"); } // Store "h3" state in Alt-Svc cache for (let i = 0; i < 10 && responseText !== "h3"; ++i) { responseText = await fetchText("https://h3.arthuredelstein.net:4433/protocol"); console.log("protocol", responseText, i); await sleepMs(10); } if (responseText !== "h3") { // Storage failed. throw new Error("Unsupported"); } } read: () => fetchText("https://h3.arthuredelstein.net:4433/protocol") result, same first party: h3, h3, h3, h3, h3 result, different first party: h3, h3, h3, h3, h3 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
blobA 'blob URL' is a local reference to some raw data. Trackers can use a blob URL to share data between websites.
  write: (secret) => { try { let blobURL = URL.createObjectURL(new Blob([secret])); fetch(`${baseURI}/blob?mode=write&key=${secret}&blobUrl=${encodeURIComponent(blobURL)}`); } catch (e) { throw new Error("Unsupported"); } } read: async (secret) => { let response = await fetch(`${baseURI}/blob?mode=read&key=${secret}`); let result = await response.json(); let blobUrl = decodeURIComponent(result.blobUrl); let blobResponse = await fetch(blobUrl); return blobResponse.text(); } result, same first party: c8e52af6-394e-4ba5-9e5a-768b2250c427, 7ac617e9-e2f8-488c-abe5-d4a86f2b2fba, 1404df63-2251-49f4-ac4c-bc952af1748f, 4b7501c2-9a6c-488c-b11a-6edd2d4d37f3, 99a93ab7-68c3-44c3-aff2-700393770f8b result, different first party: c8e52af6-394e-4ba5-9e5a-768b2250c427, 7ac617e9-e2f8-488c-abe5-d4a86f2b2fba, 1404df63-2251-49f4-ac4c-bc952af1748f, 4b7501c2-9a6c-488c-b11a-6edd2d4d37f3, 99a93ab7-68c3-44c3-aff2-700393770f8b unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { try { let blobURL = URL.createObjectURL(new Blob([secret])); fetch(`${baseURI}/blob?mode=write&key=${secret}&blobUrl=${encodeURIComponent(blobURL)}`); } catch (e) { throw new Error("Unsupported"); } } read: async (secret) => { let response = await fetch(`${baseURI}/blob?mode=read&key=${secret}`); let result = await response.json(); let blobUrl = decodeURIComponent(result.blobUrl); let blobResponse = await fetch(blobUrl); return blobResponse.text(); } result, same first party: 57d15629-4e8d-4236-8122-bc2699441dbb, 3fe9d13e-8755-46d2-8429-9a36af9b8a31, 110c1a21-8b0b-43be-98a3-6d7c6a7adb89, 0ca631f0-0924-46d4-89f1-8dd753849fa8, fddbc41f-7369-4847-9396-2eb671e081df result, different first party: 57d15629-4e8d-4236-8122-bc2699441dbb, 3fe9d13e-8755-46d2-8429-9a36af9b8a31, 110c1a21-8b0b-43be-98a3-6d7c6a7adb89, 0ca631f0-0924-46d4-89f1-8dd753849fa8, fddbc41f-7369-4847-9396-2eb671e081df unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { try { let blobURL = URL.createObjectURL(new Blob([secret])); fetch(`${baseURI}/blob?mode=write&key=${secret}&blobUrl=${encodeURIComponent(blobURL)}`); } catch (e) { throw new Error("Unsupported"); } } read: async (secret) => { let response = await fetch(`${baseURI}/blob?mode=read&key=${secret}`); let result = await response.json(); let blobUrl = decodeURIComponent(result.blobUrl); let blobResponse = await fetch(blobUrl); return blobResponse.text(); } result, same first party: acecc55e-0c38-403f-b92d-5af30acf612a, 72dce12c-80c2-4d1e-9af7-33bb86e1d8fd, b8943e54-d369-4d25-81fc-d20916423114, b5035722-831b-4b8a-880b-19a0bdeb2c84, f376eedb-a883-4ac3-a7eb-2fe3769df4b3 result, different first party: acecc55e-0c38-403f-b92d-5af30acf612a, 72dce12c-80c2-4d1e-9af7-33bb86e1d8fd, b8943e54-d369-4d25-81fc-d20916423114, b5035722-831b-4b8a-880b-19a0bdeb2c84, f376eedb-a883-4ac3-a7eb-2fe3769df4b3 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { try { let blobURL = URL.createObjectURL(new Blob([secret])); fetch(`${baseURI}/blob?mode=write&key=${secret}&blobUrl=${encodeURIComponent(blobURL)}`); } catch (e) { throw new Error("Unsupported"); } } read: async (secret) => { let response = await fetch(`${baseURI}/blob?mode=read&key=${secret}`); let result = await response.json(); let blobUrl = decodeURIComponent(result.blobUrl); let blobResponse = await fetch(blobUrl); return blobResponse.text(); } result, same first party: d58a44ed-765a-4364-8e8b-0817e0eb5ec3, 40fdba78-111f-43a9-8130-7021b3c60588, ed706a23-1b69-4d50-aca6-e2c3bc9041d7, 73368ce6-aa14-4622-923a-3140abe918b2, f9c5a914-2f36-4d12-a42a-d6be57549389 result, different first party: d58a44ed-765a-4364-8e8b-0817e0eb5ec3, 40fdba78-111f-43a9-8130-7021b3c60588, ed706a23-1b69-4d50-aca6-e2c3bc9041d7, 73368ce6-aa14-4622-923a-3140abe918b2, f9c5a914-2f36-4d12-a42a-d6be57549389 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { try { let blobURL = URL.createObjectURL(new Blob([secret])); fetch(`${baseURI}/blob?mode=write&key=${secret}&blobUrl=${encodeURIComponent(blobURL)}`); } catch (e) { throw new Error("Unsupported"); } } read: async (secret) => { let response = await fetch(`${baseURI}/blob?mode=read&key=${secret}`); let result = await response.json(); let blobUrl = decodeURIComponent(result.blobUrl); let blobResponse = await fetch(blobUrl); return blobResponse.text(); } result, same first party: 6702f336-1bd3-4e33-873d-c1f1109ad894, f7e7c7c5-21ac-47fb-a266-328b23d6b756, 872e3eaf-3210-4a01-839a-3c9640f67be3, 68dd4f2a-3b55-4f8c-bc4d-d210ad8f8eba, c024f4c5-fce3-4914-972a-3e0f82988162 result, different first party: 6702f336-1bd3-4e33-873d-c1f1109ad894, f7e7c7c5-21ac-47fb-a266-328b23d6b756, 872e3eaf-3210-4a01-839a-3c9640f67be3, 68dd4f2a-3b55-4f8c-bc4d-d210ad8f8eba, c024f4c5-fce3-4914-972a-3e0f82988162 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { try { let blobURL = URL.createObjectURL(new Blob([secret])); fetch(`${baseURI}/blob?mode=write&key=${secret}&blobUrl=${encodeURIComponent(blobURL)}`); } catch (e) { throw new Error("Unsupported"); } } read: async (secret) => { let response = await fetch(`${baseURI}/blob?mode=read&key=${secret}`); let result = await response.json(); let blobUrl = decodeURIComponent(result.blobUrl); let blobResponse = await fetch(blobUrl); return blobResponse.text(); } result, same first party: 38112110-ef99-4c99-933e-5018bda96f19, c6fc3aed-cc47-4cd4-b3ee-7eee6a6b2fc3, a5900671-1da4-4e1d-8a89-73903ad421bd, 18f6f36e-46ef-499c-9f3f-1eb2c483bedf, 55321559-3ea6-4886-a631-20a5c7f6f4a4 result, different first party: 38112110-ef99-4c99-933e-5018bda96f19, c6fc3aed-cc47-4cd4-b3ee-7eee6a6b2fc3, a5900671-1da4-4e1d-8a89-73903ad421bd, 18f6f36e-46ef-499c-9f3f-1eb2c483bedf, 55321559-3ea6-4886-a631-20a5c7f6f4a4 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { try { let blobURL = URL.createObjectURL(new Blob([secret])); fetch(`${baseURI}/blob?mode=write&key=${secret}&blobUrl=${encodeURIComponent(blobURL)}`); } catch (e) { throw new Error("Unsupported"); } } read: async (secret) => { let response = await fetch(`${baseURI}/blob?mode=read&key=${secret}`); let result = await response.json(); let blobUrl = decodeURIComponent(result.blobUrl); let blobResponse = await fetch(blobUrl); return blobResponse.text(); } result, same first party: abb7f980-2429-45ef-a355-7b9ab2fa415d, 63b995d6-b03d-4156-adc1-584b20f54156, e6ecd287-76e9-40e9-9acb-87df470b20b5, 2d9429d1-ed1e-454a-82c6-4a458391bf58, 4293188b-bd29-46d7-a33a-88c16f95bdf4 result, different first party: abb7f980-2429-45ef-a355-7b9ab2fa415d, 63b995d6-b03d-4156-adc1-584b20f54156, e6ecd287-76e9-40e9-9acb-87df470b20b5, 2d9429d1-ed1e-454a-82c6-4a458391bf58, 4293188b-bd29-46d7-a33a-88c16f95bdf4 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { try { let blobURL = URL.createObjectURL(new Blob([secret])); fetch(`${baseURI}/blob?mode=write&key=${secret}&blobUrl=${encodeURIComponent(blobURL)}`); } catch (e) { throw new Error("Unsupported"); } } read: async (secret) => { let response = await fetch(`${baseURI}/blob?mode=read&key=${secret}`); let result = await response.json(); let blobUrl = decodeURIComponent(result.blobUrl); let blobResponse = await fetch(blobUrl); return blobResponse.text(); } result, same first party: dfaf0d3a-3df5-4e5f-ad7a-4034a16cc25d, da10a4d6-a0b9-4f1e-8c86-e2a23b3b06cc, 2b5b28f0-e24b-4562-a5cf-115f0794b2a1, 2b69dc75-b49f-454c-a4ac-cabbc2c9be6a, 4ccd6c86-5d41-4a5a-b824-0811a085db96 result, different first party: dfaf0d3a-3df5-4e5f-ad7a-4034a16cc25d, da10a4d6-a0b9-4f1e-8c86-e2a23b3b06cc, 2b5b28f0-e24b-4562-a5cf-115f0794b2a1, 2b69dc75-b49f-454c-a4ac-cabbc2c9be6a, 4ccd6c86-5d41-4a5a-b824-0811a085db96 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { try { let blobURL = URL.createObjectURL(new Blob([secret])); fetch(`${baseURI}/blob?mode=write&key=${secret}&blobUrl=${encodeURIComponent(blobURL)}`); } catch (e) { throw new Error("Unsupported"); } } read: async (secret) => { let response = await fetch(`${baseURI}/blob?mode=read&key=${secret}`); let result = await response.json(); let blobUrl = decodeURIComponent(result.blobUrl); let blobResponse = await fetch(blobUrl); return blobResponse.text(); } result, same first party: ebe7674a-69fc-4832-9a56-02f8d56bc38f, 013e3f1e-4627-451f-972d-0ff7f47f2150, b26c59f9-2106-4da6-95dd-ce45a7772373, 9d2d77b8-6d0c-48d2-aa5e-8ed649b348b3, 4dcad743-499b-46d2-830c-b2293f944cf3 result, different first party: ebe7674a-69fc-4832-9a56-02f8d56bc38f, 013e3f1e-4627-451f-972d-0ff7f47f2150, b26c59f9-2106-4da6-95dd-ce45a7772373, 9d2d77b8-6d0c-48d2-aa5e-8ed649b348b3, 4dcad743-499b-46d2-830c-b2293f944cf3 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { try { let blobURL = URL.createObjectURL(new Blob([secret])); fetch(`${baseURI}/blob?mode=write&key=${secret}&blobUrl=${encodeURIComponent(blobURL)}`); } catch (e) { throw new Error("Unsupported"); } } read: async (secret) => { let response = await fetch(`${baseURI}/blob?mode=read&key=${secret}`); let result = await response.json(); let blobUrl = decodeURIComponent(result.blobUrl); let blobResponse = await fetch(blobUrl); return blobResponse.text(); } result, same first party: 558455ca-ab7c-47ad-9d13-14723a3aa1c1, 2be408e8-df66-4012-b22f-675070920520, 652282fe-6f8d-4dd5-8087-c12fb99176e4, 2ff00698-f72a-443c-8ce9-bd81acea95b4, d562eddf-0239-4f80-8bbd-589eb568277b result, different first party: 558455ca-ab7c-47ad-9d13-14723a3aa1c1, 2be408e8-df66-4012-b22f-675070920520, 652282fe-6f8d-4dd5-8087-c12fb99176e4, 2ff00698-f72a-443c-8ce9-bd81acea95b4, d562eddf-0239-4f80-8bbd-589eb568277b unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { try { let blobURL = URL.createObjectURL(new Blob([secret])); fetch(`${baseURI}/blob?mode=write&key=${secret}&blobUrl=${encodeURIComponent(blobURL)}`); } catch (e) { throw new Error("Unsupported"); } } read: async (secret) => { let response = await fetch(`${baseURI}/blob?mode=read&key=${secret}`); let result = await response.json(); let blobUrl = decodeURIComponent(result.blobUrl); let blobResponse = await fetch(blobUrl); return blobResponse.text(); } result, same first party: 4a360b5f-ba1a-4cea-a8da-89bab0ffdfa6, 7d1f0819-2c2d-4dc5-8e21-0a80e95b64ee, 42d88b90-7100-40f0-bce3-4d2dfe73ff7e, a7fdeceb-0e25-44a6-b6fe-a508d7aea5b4, b7bcaa48-54f7-4f55-97d8-de76f417e955 result, different first party: 4a360b5f-ba1a-4cea-a8da-89bab0ffdfa6, 7d1f0819-2c2d-4dc5-8e21-0a80e95b64ee, 42d88b90-7100-40f0-bce3-4d2dfe73ff7e, a7fdeceb-0e25-44a6-b6fe-a508d7aea5b4, b7bcaa48-54f7-4f55-97d8-de76f417e955 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { try { let blobURL = URL.createObjectURL(new Blob([secret])); fetch(`${baseURI}/blob?mode=write&key=${secret}&blobUrl=${encodeURIComponent(blobURL)}`); } catch (e) { throw new Error("Unsupported"); } } read: async (secret) => { let response = await fetch(`${baseURI}/blob?mode=read&key=${secret}`); let result = await response.json(); let blobUrl = decodeURIComponent(result.blobUrl); let blobResponse = await fetch(blobUrl); return blobResponse.text(); } result, same first party: 13632dad-100d-4bbb-82ad-1f6affef616f, 32b60130-451a-4964-8bf8-84317dcba86e, 629d90d9-fabe-46dc-bd67-58812eb88f88, 0872209d-9185-4713-b394-19833302c180, 4d956e34-e340-4716-a118-e56856183614 result, different first party: 13632dad-100d-4bbb-82ad-1f6affef616f, 32b60130-451a-4964-8bf8-84317dcba86e, 629d90d9-fabe-46dc-bd67-58812eb88f88, 0872209d-9185-4713-b394-19833302c180, 4d956e34-e340-4716-a118-e56856183614 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { try { let blobURL = URL.createObjectURL(new Blob([secret])); fetch(`${baseURI}/blob?mode=write&key=${secret}&blobUrl=${encodeURIComponent(blobURL)}`); } catch (e) { throw new Error("Unsupported"); } } read: async (secret) => { let response = await fetch(`${baseURI}/blob?mode=read&key=${secret}`); let result = await response.json(); let blobUrl = decodeURIComponent(result.blobUrl); let blobResponse = await fetch(blobUrl); return blobResponse.text(); } result, same first party: Error: Load failed, Error: Load failed, Error: Load failed, Error: Load failed, Error: Load failed result, different first party: Error: Load failed, Error: Load failed, Error: Load failed, Error: Load failed, Error: Load failed unsupported: false, false, false, false, false passed: undefined test failed: true, true, true, true, true
  write: (secret) => { try { let blobURL = URL.createObjectURL(new Blob([secret])); fetch(`${baseURI}/blob?mode=write&key=${secret}&blobUrl=${encodeURIComponent(blobURL)}`); } catch (e) { throw new Error("Unsupported"); } } read: async (secret) => { let response = await fetch(`${baseURI}/blob?mode=read&key=${secret}`); let result = await response.json(); let blobUrl = decodeURIComponent(result.blobUrl); let blobResponse = await fetch(blobUrl); return blobResponse.text(); } result, same first party: 23f319de-831d-495d-9b96-b346f764c5d3, 14f05b3b-1b00-4eca-b1a1-3a43391d920e, cbfe5b9c-1123-4c7a-956b-231d454acbb7, 34fdb1b1-c7f6-41ba-b0a2-4bdf0d06a240, 54029316-8ea8-4ad2-ac2d-eb50d7c981d1 result, different first party: Error: NetworkError when attempting to fetch resource., Error: NetworkError when attempting to fetch resource., Error: NetworkError when attempting to fetch resource., Error: NetworkError when attempting to fetch resource., Error: NetworkError when attempting to fetch resource. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => { try { let blobURL = URL.createObjectURL(new Blob([secret])); fetch(`${baseURI}/blob?mode=write&key=${secret}&blobUrl=${encodeURIComponent(blobURL)}`); } catch (e) { throw new Error("Unsupported"); } } read: async (secret) => { let response = await fetch(`${baseURI}/blob?mode=read&key=${secret}`); let result = await response.json(); let blobUrl = decodeURIComponent(result.blobUrl); let blobResponse = await fetch(blobUrl); return blobResponse.text(); } result, same first party: 16aca853-50e8-41e1-91c9-42e6b447ea0b, 1568704e-d4cd-48d5-b274-7dbd8c8c7e6a, 8c99f84e-0733-442d-bd0b-254bce33169e, 04c4a7a5-6dbe-491a-9dd2-3c538978f963, 1ea5d0ae-570c-4e85-9731-0526e3a0df65 result, different first party: 16aca853-50e8-41e1-91c9-42e6b447ea0b, 1568704e-d4cd-48d5-b274-7dbd8c8c7e6a, 8c99f84e-0733-442d-bd0b-254bce33169e, 04c4a7a5-6dbe-491a-9dd2-3c538978f963, 1ea5d0ae-570c-4e85-9731-0526e3a0df65 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { try { let blobURL = URL.createObjectURL(new Blob([secret])); fetch(`${baseURI}/blob?mode=write&key=${secret}&blobUrl=${encodeURIComponent(blobURL)}`); } catch (e) { throw new Error("Unsupported"); } } read: async (secret) => { let response = await fetch(`${baseURI}/blob?mode=read&key=${secret}`); let result = await response.json(); let blobUrl = decodeURIComponent(result.blobUrl); let blobResponse = await fetch(blobUrl); return blobResponse.text(); } result, same first party: d8fc412f-e3c8-46d9-9b44-70894a3c88bb, 41db4977-d4e9-437a-b6af-7121adad1a4d, d31c2b39-daa4-4c14-ba87-3b9a574057b8, 8379e908-5f32-490f-a01a-8cf8ccc7b509, ed6cd199-8552-42ce-8392-72f28db90cba result, different first party: d8fc412f-e3c8-46d9-9b44-70894a3c88bb, 41db4977-d4e9-437a-b6af-7121adad1a4d, d31c2b39-daa4-4c14-ba87-3b9a574057b8, 8379e908-5f32-490f-a01a-8cf8ccc7b509, ed6cd199-8552-42ce-8392-72f28db90cba unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
BroadcastChannelA BroadcastChannel is designed to send messages between tabs. In some browsers it can be used for cross-site communication and tracking.
  write: (secret) => { try { let bc = new BroadcastChannel("secrets"); bc.onmessage = (event) => { if (event.data === "request") { bc.postMessage(secret); } }; } catch (e) { throw new Error("Unsupported"); } } read: () => new Promise((resolve, reject) => { let bc = new BroadcastChannel("secrets"); bc.onmessage = (event) => { if (event.data !== "request") { resolve(event.data); } }; bc.postMessage("request"); setTimeout(() => reject({message: "no BroadcastChannel message"}), 3000); }) result, same first party: c8e52af6-394e-4ba5-9e5a-768b2250c427, 7ac617e9-e2f8-488c-abe5-d4a86f2b2fba, 1404df63-2251-49f4-ac4c-bc952af1748f, 4b7501c2-9a6c-488c-b11a-6edd2d4d37f3, 99a93ab7-68c3-44c3-aff2-700393770f8b result, different first party: Error: no BroadcastChannel message, Error: no BroadcastChannel message, Error: no BroadcastChannel message, Error: no BroadcastChannel message, Error: no BroadcastChannel message unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => { try { let bc = new BroadcastChannel("secrets"); bc.onmessage = (event) => { if (event.data === "request") { bc.postMessage(secret); } }; } catch (e) { throw new Error("Unsupported"); } } read: () => new Promise((resolve, reject) => { let bc = new BroadcastChannel("secrets"); bc.onmessage = (event) => { if (event.data !== "request") { resolve(event.data); } }; bc.postMessage("request"); setTimeout(() => reject({message: "no BroadcastChannel message"}), 3000); }) result, same first party: 57d15629-4e8d-4236-8122-bc2699441dbb, 3fe9d13e-8755-46d2-8429-9a36af9b8a31, 110c1a21-8b0b-43be-98a3-6d7c6a7adb89, 0ca631f0-0924-46d4-89f1-8dd753849fa8, fddbc41f-7369-4847-9396-2eb671e081df result, different first party: Error: no BroadcastChannel message, Error: no BroadcastChannel message, Error: no BroadcastChannel message, Error: no BroadcastChannel message, Error: no BroadcastChannel message unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => { try { let bc = new BroadcastChannel("secrets"); bc.onmessage = (event) => { if (event.data === "request") { bc.postMessage(secret); } }; } catch (e) { throw new Error("Unsupported"); } } read: () => new Promise((resolve, reject) => { let bc = new BroadcastChannel("secrets"); bc.onmessage = (event) => { if (event.data !== "request") { resolve(event.data); } }; bc.postMessage("request"); setTimeout(() => reject({message: "no BroadcastChannel message"}), 3000); }) result, same first party: acecc55e-0c38-403f-b92d-5af30acf612a, 72dce12c-80c2-4d1e-9af7-33bb86e1d8fd, b8943e54-d369-4d25-81fc-d20916423114, b5035722-831b-4b8a-880b-19a0bdeb2c84, f376eedb-a883-4ac3-a7eb-2fe3769df4b3 result, different first party: Error: no BroadcastChannel message, Error: no BroadcastChannel message, Error: no BroadcastChannel message, Error: no BroadcastChannel message, Error: no BroadcastChannel message unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => { try { let bc = new BroadcastChannel("secrets"); bc.onmessage = (event) => { if (event.data === "request") { bc.postMessage(secret); } }; } catch (e) { throw new Error("Unsupported"); } } read: () => new Promise((resolve, reject) => { let bc = new BroadcastChannel("secrets"); bc.onmessage = (event) => { if (event.data !== "request") { resolve(event.data); } }; bc.postMessage("request"); setTimeout(() => reject({message: "no BroadcastChannel message"}), 3000); }) result, same first party: d58a44ed-765a-4364-8e8b-0817e0eb5ec3, 40fdba78-111f-43a9-8130-7021b3c60588, ed706a23-1b69-4d50-aca6-e2c3bc9041d7, 73368ce6-aa14-4622-923a-3140abe918b2, f9c5a914-2f36-4d12-a42a-d6be57549389 result, different first party: d58a44ed-765a-4364-8e8b-0817e0eb5ec3, 40fdba78-111f-43a9-8130-7021b3c60588, ed706a23-1b69-4d50-aca6-e2c3bc9041d7, 73368ce6-aa14-4622-923a-3140abe918b2, f9c5a914-2f36-4d12-a42a-d6be57549389 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { try { let bc = new BroadcastChannel("secrets"); bc.onmessage = (event) => { if (event.data === "request") { bc.postMessage(secret); } }; } catch (e) { throw new Error("Unsupported"); } } read: () => new Promise((resolve, reject) => { let bc = new BroadcastChannel("secrets"); bc.onmessage = (event) => { if (event.data !== "request") { resolve(event.data); } }; bc.postMessage("request"); setTimeout(() => reject({message: "no BroadcastChannel message"}), 3000); }) result, same first party: 6702f336-1bd3-4e33-873d-c1f1109ad894, f7e7c7c5-21ac-47fb-a266-328b23d6b756, 872e3eaf-3210-4a01-839a-3c9640f67be3, 68dd4f2a-3b55-4f8c-bc4d-d210ad8f8eba, c024f4c5-fce3-4914-972a-3e0f82988162 result, different first party: 6702f336-1bd3-4e33-873d-c1f1109ad894, f7e7c7c5-21ac-47fb-a266-328b23d6b756, 872e3eaf-3210-4a01-839a-3c9640f67be3, 68dd4f2a-3b55-4f8c-bc4d-d210ad8f8eba, c024f4c5-fce3-4914-972a-3e0f82988162 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { try { let bc = new BroadcastChannel("secrets"); bc.onmessage = (event) => { if (event.data === "request") { bc.postMessage(secret); } }; } catch (e) { throw new Error("Unsupported"); } } read: () => new Promise((resolve, reject) => { let bc = new BroadcastChannel("secrets"); bc.onmessage = (event) => { if (event.data !== "request") { resolve(event.data); } }; bc.postMessage("request"); setTimeout(() => reject({message: "no BroadcastChannel message"}), 3000); }) result, same first party: 38112110-ef99-4c99-933e-5018bda96f19, c6fc3aed-cc47-4cd4-b3ee-7eee6a6b2fc3, a5900671-1da4-4e1d-8a89-73903ad421bd, 18f6f36e-46ef-499c-9f3f-1eb2c483bedf, 55321559-3ea6-4886-a631-20a5c7f6f4a4 result, different first party: 38112110-ef99-4c99-933e-5018bda96f19, c6fc3aed-cc47-4cd4-b3ee-7eee6a6b2fc3, a5900671-1da4-4e1d-8a89-73903ad421bd, 18f6f36e-46ef-499c-9f3f-1eb2c483bedf, 55321559-3ea6-4886-a631-20a5c7f6f4a4 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { try { let bc = new BroadcastChannel("secrets"); bc.onmessage = (event) => { if (event.data === "request") { bc.postMessage(secret); } }; } catch (e) { throw new Error("Unsupported"); } } read: () => new Promise((resolve, reject) => { let bc = new BroadcastChannel("secrets"); bc.onmessage = (event) => { if (event.data !== "request") { resolve(event.data); } }; bc.postMessage("request"); setTimeout(() => reject({message: "no BroadcastChannel message"}), 3000); }) result, same first party: abb7f980-2429-45ef-a355-7b9ab2fa415d, 63b995d6-b03d-4156-adc1-584b20f54156, e6ecd287-76e9-40e9-9acb-87df470b20b5, 2d9429d1-ed1e-454a-82c6-4a458391bf58, 4293188b-bd29-46d7-a33a-88c16f95bdf4 result, different first party: abb7f980-2429-45ef-a355-7b9ab2fa415d, 63b995d6-b03d-4156-adc1-584b20f54156, e6ecd287-76e9-40e9-9acb-87df470b20b5, 2d9429d1-ed1e-454a-82c6-4a458391bf58, 4293188b-bd29-46d7-a33a-88c16f95bdf4 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { try { let bc = new BroadcastChannel("secrets"); bc.onmessage = (event) => { if (event.data === "request") { bc.postMessage(secret); } }; } catch (e) { throw new Error("Unsupported"); } } read: () => new Promise((resolve, reject) => { let bc = new BroadcastChannel("secrets"); bc.onmessage = (event) => { if (event.data !== "request") { resolve(event.data); } }; bc.postMessage("request"); setTimeout(() => reject({message: "no BroadcastChannel message"}), 3000); }) result, same first party: dfaf0d3a-3df5-4e5f-ad7a-4034a16cc25d, da10a4d6-a0b9-4f1e-8c86-e2a23b3b06cc, 2b5b28f0-e24b-4562-a5cf-115f0794b2a1, 2b69dc75-b49f-454c-a4ac-cabbc2c9be6a, 4ccd6c86-5d41-4a5a-b824-0811a085db96 result, different first party: dfaf0d3a-3df5-4e5f-ad7a-4034a16cc25d, da10a4d6-a0b9-4f1e-8c86-e2a23b3b06cc, 2b5b28f0-e24b-4562-a5cf-115f0794b2a1, 2b69dc75-b49f-454c-a4ac-cabbc2c9be6a, 4ccd6c86-5d41-4a5a-b824-0811a085db96 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { try { let bc = new BroadcastChannel("secrets"); bc.onmessage = (event) => { if (event.data === "request") { bc.postMessage(secret); } }; } catch (e) { throw new Error("Unsupported"); } } read: () => new Promise((resolve, reject) => { let bc = new BroadcastChannel("secrets"); bc.onmessage = (event) => { if (event.data !== "request") { resolve(event.data); } }; bc.postMessage("request"); setTimeout(() => reject({message: "no BroadcastChannel message"}), 3000); }) result, same first party: ebe7674a-69fc-4832-9a56-02f8d56bc38f, 013e3f1e-4627-451f-972d-0ff7f47f2150, b26c59f9-2106-4da6-95dd-ce45a7772373, 9d2d77b8-6d0c-48d2-aa5e-8ed649b348b3, 4dcad743-499b-46d2-830c-b2293f944cf3 result, different first party: Error: no BroadcastChannel message, Error: no BroadcastChannel message, Error: no BroadcastChannel message, Error: no BroadcastChannel message, Error: no BroadcastChannel message unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => { try { let bc = new BroadcastChannel("secrets"); bc.onmessage = (event) => { if (event.data === "request") { bc.postMessage(secret); } }; } catch (e) { throw new Error("Unsupported"); } } read: () => new Promise((resolve, reject) => { let bc = new BroadcastChannel("secrets"); bc.onmessage = (event) => { if (event.data !== "request") { resolve(event.data); } }; bc.postMessage("request"); setTimeout(() => reject({message: "no BroadcastChannel message"}), 3000); }) result, same first party: 558455ca-ab7c-47ad-9d13-14723a3aa1c1, 2be408e8-df66-4012-b22f-675070920520, 652282fe-6f8d-4dd5-8087-c12fb99176e4, 2ff00698-f72a-443c-8ce9-bd81acea95b4, d562eddf-0239-4f80-8bbd-589eb568277b result, different first party: 558455ca-ab7c-47ad-9d13-14723a3aa1c1, 2be408e8-df66-4012-b22f-675070920520, 652282fe-6f8d-4dd5-8087-c12fb99176e4, 2ff00698-f72a-443c-8ce9-bd81acea95b4, d562eddf-0239-4f80-8bbd-589eb568277b unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { try { let bc = new BroadcastChannel("secrets"); bc.onmessage = (event) => { if (event.data === "request") { bc.postMessage(secret); } }; } catch (e) { throw new Error("Unsupported"); } } read: () => new Promise((resolve, reject) => { let bc = new BroadcastChannel("secrets"); bc.onmessage = (event) => { if (event.data !== "request") { resolve(event.data); } }; bc.postMessage("request"); setTimeout(() => reject({message: "no BroadcastChannel message"}), 3000); }) result, same first party: 4a360b5f-ba1a-4cea-a8da-89bab0ffdfa6, 7d1f0819-2c2d-4dc5-8e21-0a80e95b64ee, 42d88b90-7100-40f0-bce3-4d2dfe73ff7e, a7fdeceb-0e25-44a6-b6fe-a508d7aea5b4, b7bcaa48-54f7-4f55-97d8-de76f417e955 result, different first party: 4a360b5f-ba1a-4cea-a8da-89bab0ffdfa6, 7d1f0819-2c2d-4dc5-8e21-0a80e95b64ee, 42d88b90-7100-40f0-bce3-4d2dfe73ff7e, a7fdeceb-0e25-44a6-b6fe-a508d7aea5b4, b7bcaa48-54f7-4f55-97d8-de76f417e955 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
write: (secret) => { try { let bc = new BroadcastChannel("secrets"); bc.onmessage = (event) => { if (event.data === "request") { bc.postMessage(secret); } }; } catch (e) { throw new Error("Unsupported"); } } read: () => new Promise((resolve, reject) => { let bc = new BroadcastChannel("secrets"); bc.onmessage = (event) => { if (event.data !== "request") { resolve(event.data); } }; bc.postMessage("request"); setTimeout(() => reject({message: "no BroadcastChannel message"}), 3000); }) result, same first party: Error: Can't find variable: BroadcastChannel, Error: Can't find variable: BroadcastChannel, Error: Can't find variable: BroadcastChannel, Error: Can't find variable: BroadcastChannel, Error: Can't find variable: BroadcastChannel result, different first party: Error: Can't find variable: BroadcastChannel, Error: Can't find variable: BroadcastChannel, Error: Can't find variable: BroadcastChannel, Error: Can't find variable: BroadcastChannel, Error: Can't find variable: BroadcastChannel unsupported: true, true, true, true, true passed: undefined test failed: false, false, false, false, false
write: (secret) => { try { let bc = new BroadcastChannel("secrets"); bc.onmessage = (event) => { if (event.data === "request") { bc.postMessage(secret); } }; } catch (e) { throw new Error("Unsupported"); } } read: () => new Promise((resolve, reject) => { let bc = new BroadcastChannel("secrets"); bc.onmessage = (event) => { if (event.data !== "request") { resolve(event.data); } }; bc.postMessage("request"); setTimeout(() => reject({message: "no BroadcastChannel message"}), 3000); }) result, same first party: Error: Can't find variable: BroadcastChannel, Error: Can't find variable: BroadcastChannel, Error: Can't find variable: BroadcastChannel, Error: Can't find variable: BroadcastChannel, Error: Can't find variable: BroadcastChannel result, different first party: Error: Can't find variable: BroadcastChannel, Error: Can't find variable: BroadcastChannel, Error: Can't find variable: BroadcastChannel, Error: Can't find variable: BroadcastChannel, Error: Can't find variable: BroadcastChannel unsupported: true, true, true, true, true passed: undefined test failed: false, false, false, false, false
  write: (secret) => { try { let bc = new BroadcastChannel("secrets"); bc.onmessage = (event) => { if (event.data === "request") { bc.postMessage(secret); } }; } catch (e) { throw new Error("Unsupported"); } } read: () => new Promise((resolve, reject) => { let bc = new BroadcastChannel("secrets"); bc.onmessage = (event) => { if (event.data !== "request") { resolve(event.data); } }; bc.postMessage("request"); setTimeout(() => reject({message: "no BroadcastChannel message"}), 3000); }) result, same first party: 23f319de-831d-495d-9b96-b346f764c5d3, 14f05b3b-1b00-4eca-b1a1-3a43391d920e, cbfe5b9c-1123-4c7a-956b-231d454acbb7, 34fdb1b1-c7f6-41ba-b0a2-4bdf0d06a240, 54029316-8ea8-4ad2-ac2d-eb50d7c981d1 result, different first party: Error: no BroadcastChannel message, Error: no BroadcastChannel message, Error: no BroadcastChannel message, Error: no BroadcastChannel message, Error: no BroadcastChannel message unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => { try { let bc = new BroadcastChannel("secrets"); bc.onmessage = (event) => { if (event.data === "request") { bc.postMessage(secret); } }; } catch (e) { throw new Error("Unsupported"); } } read: () => new Promise((resolve, reject) => { let bc = new BroadcastChannel("secrets"); bc.onmessage = (event) => { if (event.data !== "request") { resolve(event.data); } }; bc.postMessage("request"); setTimeout(() => reject({message: "no BroadcastChannel message"}), 3000); }) result, same first party: 16aca853-50e8-41e1-91c9-42e6b447ea0b, 1568704e-d4cd-48d5-b274-7dbd8c8c7e6a, 8c99f84e-0733-442d-bd0b-254bce33169e, 04c4a7a5-6dbe-491a-9dd2-3c538978f963, 1ea5d0ae-570c-4e85-9731-0526e3a0df65 result, different first party: 16aca853-50e8-41e1-91c9-42e6b447ea0b, 1568704e-d4cd-48d5-b274-7dbd8c8c7e6a, 8c99f84e-0733-442d-bd0b-254bce33169e, 04c4a7a5-6dbe-491a-9dd2-3c538978f963, 1ea5d0ae-570c-4e85-9731-0526e3a0df65 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { try { let bc = new BroadcastChannel("secrets"); bc.onmessage = (event) => { if (event.data === "request") { bc.postMessage(secret); } }; } catch (e) { throw new Error("Unsupported"); } } read: () => new Promise((resolve, reject) => { let bc = new BroadcastChannel("secrets"); bc.onmessage = (event) => { if (event.data !== "request") { resolve(event.data); } }; bc.postMessage("request"); setTimeout(() => reject({message: "no BroadcastChannel message"}), 3000); }) result, same first party: d8fc412f-e3c8-46d9-9b44-70894a3c88bb, 41db4977-d4e9-437a-b6af-7121adad1a4d, d31c2b39-daa4-4c14-ba87-3b9a574057b8, 8379e908-5f32-490f-a01a-8cf8ccc7b509, ed6cd199-8552-42ce-8392-72f28db90cba result, different first party: d8fc412f-e3c8-46d9-9b44-70894a3c88bb, 41db4977-d4e9-437a-b6af-7121adad1a4d, d31c2b39-daa4-4c14-ba87-3b9a574057b8, 8379e908-5f32-490f-a01a-8cf8ccc7b509, ed6cd199-8552-42ce-8392-72f28db90cba unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
CacheStorageThe Cache API is a content storage mechanism originally introduced to support ServiceWorkers. If the same Cache object is accessible to multiple websites, it can be abused to track users.
  write: async (key) => { try { let cache = await caches.open("supercookies"); cache.addAll([`test.css?key=${key}`]); } catch (e) { throw new Error("Unsupported"); } } read: async () => { let cache = await caches.open("supercookies"); let cacheKeys = await cache.keys(); let url = cacheKeys[0].url; return (new URL(url)).searchParams.get("key"); } result, same first party: 58069814-89fe-4628-9bba-ae01813fb084, 58069814-89fe-4628-9bba-ae01813fb084, 58069814-89fe-4628-9bba-ae01813fb084, 58069814-89fe-4628-9bba-ae01813fb084, 58069814-89fe-4628-9bba-ae01813fb084 result, different first party: Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { try { let cache = await caches.open("supercookies"); cache.addAll([`test.css?key=${key}`]); } catch (e) { throw new Error("Unsupported"); } } read: async () => { let cache = await caches.open("supercookies"); let cacheKeys = await cache.keys(); let url = cacheKeys[0].url; return (new URL(url)).searchParams.get("key"); } result, same first party: 57d15629-4e8d-4236-8122-bc2699441dbb, 3fe9d13e-8755-46d2-8429-9a36af9b8a31, 110c1a21-8b0b-43be-98a3-6d7c6a7adb89, 0ca631f0-0924-46d4-89f1-8dd753849fa8, fddbc41f-7369-4847-9396-2eb671e081df result, different first party: Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { try { let cache = await caches.open("supercookies"); cache.addAll([`test.css?key=${key}`]); } catch (e) { throw new Error("Unsupported"); } } read: async () => { let cache = await caches.open("supercookies"); let cacheKeys = await cache.keys(); let url = cacheKeys[0].url; return (new URL(url)).searchParams.get("key"); } result, same first party: acecc55e-0c38-403f-b92d-5af30acf612a, 72dce12c-80c2-4d1e-9af7-33bb86e1d8fd, b8943e54-d369-4d25-81fc-d20916423114, b5035722-831b-4b8a-880b-19a0bdeb2c84, f376eedb-a883-4ac3-a7eb-2fe3769df4b3 result, different first party: Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { try { let cache = await caches.open("supercookies"); cache.addAll([`test.css?key=${key}`]); } catch (e) { throw new Error("Unsupported"); } } read: async () => { let cache = await caches.open("supercookies"); let cacheKeys = await cache.keys(); let url = cacheKeys[0].url; return (new URL(url)).searchParams.get("key"); } result, same first party: 27a05d75-839b-406c-8454-e65d4a957842, 27a05d75-839b-406c-8454-e65d4a957842, 27a05d75-839b-406c-8454-e65d4a957842, 27a05d75-839b-406c-8454-e65d4a957842, 27a05d75-839b-406c-8454-e65d4a957842 result, different first party: 27a05d75-839b-406c-8454-e65d4a957842, 27a05d75-839b-406c-8454-e65d4a957842, 27a05d75-839b-406c-8454-e65d4a957842, 27a05d75-839b-406c-8454-e65d4a957842, 27a05d75-839b-406c-8454-e65d4a957842 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { try { let cache = await caches.open("supercookies"); cache.addAll([`test.css?key=${key}`]); } catch (e) { throw new Error("Unsupported"); } } read: async () => { let cache = await caches.open("supercookies"); let cacheKeys = await cache.keys(); let url = cacheKeys[0].url; return (new URL(url)).searchParams.get("key"); } result, same first party: 6702f336-1bd3-4e33-873d-c1f1109ad894, f7e7c7c5-21ac-47fb-a266-328b23d6b756, 872e3eaf-3210-4a01-839a-3c9640f67be3, 68dd4f2a-3b55-4f8c-bc4d-d210ad8f8eba, c024f4c5-fce3-4914-972a-3e0f82988162 result, different first party: Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { try { let cache = await caches.open("supercookies"); cache.addAll([`test.css?key=${key}`]); } catch (e) { throw new Error("Unsupported"); } } read: async () => { let cache = await caches.open("supercookies"); let cacheKeys = await cache.keys(); let url = cacheKeys[0].url; return (new URL(url)).searchParams.get("key"); } result, same first party: 6046401262584151, 6046401262584151, 6046401262584151, 6046401262584151, 6046401262584151 result, different first party: 6046401262584151, 6046401262584151, 6046401262584151, 6046401262584151, 6046401262584151 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { try { let cache = await caches.open("supercookies"); cache.addAll([`test.css?key=${key}`]); } catch (e) { throw new Error("Unsupported"); } } read: async () => { let cache = await caches.open("supercookies"); let cacheKeys = await cache.keys(); let url = cacheKeys[0].url; return (new URL(url)).searchParams.get("key"); } result, same first party: abb7f980-2429-45ef-a355-7b9ab2fa415d, 63b995d6-b03d-4156-adc1-584b20f54156, e6ecd287-76e9-40e9-9acb-87df470b20b5, 2d9429d1-ed1e-454a-82c6-4a458391bf58, 4293188b-bd29-46d7-a33a-88c16f95bdf4 result, different first party: abb7f980-2429-45ef-a355-7b9ab2fa415d, 63b995d6-b03d-4156-adc1-584b20f54156, e6ecd287-76e9-40e9-9acb-87df470b20b5, 2d9429d1-ed1e-454a-82c6-4a458391bf58, 4293188b-bd29-46d7-a33a-88c16f95bdf4 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { try { let cache = await caches.open("supercookies"); cache.addAll([`test.css?key=${key}`]); } catch (e) { throw new Error("Unsupported"); } } read: async () => { let cache = await caches.open("supercookies"); let cacheKeys = await cache.keys(); let url = cacheKeys[0].url; return (new URL(url)).searchParams.get("key"); } result, same first party: 3695179a-2aca-4d2a-94e8-b258a74ede2f, 3695179a-2aca-4d2a-94e8-b258a74ede2f, 3695179a-2aca-4d2a-94e8-b258a74ede2f, 3695179a-2aca-4d2a-94e8-b258a74ede2f, 3695179a-2aca-4d2a-94e8-b258a74ede2f result, different first party: 3695179a-2aca-4d2a-94e8-b258a74ede2f, 3695179a-2aca-4d2a-94e8-b258a74ede2f, 3695179a-2aca-4d2a-94e8-b258a74ede2f, 3695179a-2aca-4d2a-94e8-b258a74ede2f, 3695179a-2aca-4d2a-94e8-b258a74ede2f unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
write: async (key) => { try { let cache = await caches.open("supercookies"); cache.addAll([`test.css?key=${key}`]); } catch (e) { throw new Error("Unsupported"); } } read: async () => { let cache = await caches.open("supercookies"); let cacheKeys = await cache.keys(); let url = cacheKeys[0].url; return (new URL(url)).searchParams.get("key"); } result, same first party: Error: The operation is insecure., Error: The operation is insecure., Error: The operation is insecure., Error: The operation is insecure., Error: The operation is insecure. result, different first party: Error: The operation is insecure., Error: The operation is insecure., Error: The operation is insecure., Error: The operation is insecure., Error: The operation is insecure. unsupported: true, true, true, true, true passed: undefined test failed: false, false, false, false, false
  write: async (key) => { try { let cache = await caches.open("supercookies"); cache.addAll([`test.css?key=${key}`]); } catch (e) { throw new Error("Unsupported"); } } read: async () => { let cache = await caches.open("supercookies"); let cacheKeys = await cache.keys(); let url = cacheKeys[0].url; return (new URL(url)).searchParams.get("key"); } result, same first party: 8847123413332609, 8847123413332609, 8847123413332609, 8847123413332609, 8847123413332609 result, different first party: 8847123413332609, 8847123413332609, 8847123413332609, 8847123413332609, 8847123413332609 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { try { let cache = await caches.open("supercookies"); cache.addAll([`test.css?key=${key}`]); } catch (e) { throw new Error("Unsupported"); } } read: async () => { let cache = await caches.open("supercookies"); let cacheKeys = await cache.keys(); let url = cacheKeys[0].url; return (new URL(url)).searchParams.get("key"); } result, same first party: 4a360b5f-ba1a-4cea-a8da-89bab0ffdfa6, 7d1f0819-2c2d-4dc5-8e21-0a80e95b64ee, 42d88b90-7100-40f0-bce3-4d2dfe73ff7e, a7fdeceb-0e25-44a6-b6fe-a508d7aea5b4, b7bcaa48-54f7-4f55-97d8-de76f417e955 result, different first party: Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { try { let cache = await caches.open("supercookies"); cache.addAll([`test.css?key=${key}`]); } catch (e) { throw new Error("Unsupported"); } } read: async () => { let cache = await caches.open("supercookies"); let cacheKeys = await cache.keys(); let url = cacheKeys[0].url; return (new URL(url)).searchParams.get("key"); } result, same first party: 13632dad-100d-4bbb-82ad-1f6affef616f, 32b60130-451a-4964-8bf8-84317dcba86e, 629d90d9-fabe-46dc-bd67-58812eb88f88, 0872209d-9185-4713-b394-19833302c180, 4d956e34-e340-4716-a118-e56856183614 result, different first party: Error: undefined is not an object (evaluating 'cacheKeys[0].url'), Error: undefined is not an object (evaluating 'cacheKeys[0].url'), Error: undefined is not an object (evaluating 'cacheKeys[0].url'), Error: undefined is not an object (evaluating 'cacheKeys[0].url'), Error: undefined is not an object (evaluating 'cacheKeys[0].url') unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { try { let cache = await caches.open("supercookies"); cache.addAll([`test.css?key=${key}`]); } catch (e) { throw new Error("Unsupported"); } } read: async () => { let cache = await caches.open("supercookies"); let cacheKeys = await cache.keys(); let url = cacheKeys[0].url; return (new URL(url)).searchParams.get("key"); } result, same first party: Error: undefined is not an object (evaluating 'cacheKeys[0].url'), Error: undefined is not an object (evaluating 'cacheKeys[0].url'), Error: undefined is not an object (evaluating 'cacheKeys[0].url'), Error: undefined is not an object (evaluating 'cacheKeys[0].url'), Error: undefined is not an object (evaluating 'cacheKeys[0].url') result, different first party: Error: undefined is not an object (evaluating 'cacheKeys[0].url'), Error: undefined is not an object (evaluating 'cacheKeys[0].url'), Error: undefined is not an object (evaluating 'cacheKeys[0].url'), Error: undefined is not an object (evaluating 'cacheKeys[0].url'), Error: undefined is not an object (evaluating 'cacheKeys[0].url') unsupported: false, false, false, false, false passed: undefined test failed: true, true, true, true, true
write: async (key) => { try { let cache = await caches.open("supercookies"); cache.addAll([`test.css?key=${key}`]); } catch (e) { throw new Error("Unsupported"); } } read: async () => { let cache = await caches.open("supercookies"); let cacheKeys = await cache.keys(); let url = cacheKeys[0].url; return (new URL(url)).searchParams.get("key"); } result, same first party: Error: The operation is insecure., Error: The operation is insecure., Error: The operation is insecure., Error: The operation is insecure., Error: The operation is insecure. result, different first party: Error: The operation is insecure., Error: The operation is insecure., Error: The operation is insecure., Error: The operation is insecure., Error: The operation is insecure. unsupported: true, true, true, true, true passed: undefined test failed: false, false, false, false, false
  write: async (key) => { try { let cache = await caches.open("supercookies"); cache.addAll([`test.css?key=${key}`]); } catch (e) { throw new Error("Unsupported"); } } read: async () => { let cache = await caches.open("supercookies"); let cacheKeys = await cache.keys(); let url = cacheKeys[0].url; return (new URL(url)).searchParams.get("key"); } result, same first party: 6254449813902438, 6254449813902438, 6254449813902438, 6254449813902438, 6254449813902438 result, different first party: 6254449813902438, 6254449813902438, 6254449813902438, 6254449813902438, 6254449813902438 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { try { let cache = await caches.open("supercookies"); cache.addAll([`test.css?key=${key}`]); } catch (e) { throw new Error("Unsupported"); } } read: async () => { let cache = await caches.open("supercookies"); let cacheKeys = await cache.keys(); let url = cacheKeys[0].url; return (new URL(url)).searchParams.get("key"); } result, same first party: d8fc412f-e3c8-46d9-9b44-70894a3c88bb, 41db4977-d4e9-437a-b6af-7121adad1a4d, d31c2b39-daa4-4c14-ba87-3b9a574057b8, 8379e908-5f32-490f-a01a-8cf8ccc7b509, ed6cd199-8552-42ce-8392-72f28db90cba result, different first party: Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
cookieThe cookie, first introduced by Netscape in 1994, is a small amount of data stored by your browser on a website's behalf. It has legitimate uses, but it is also the classic cross-site tracking mechanism, and today still the most popular method of tracking users across websites. Browsers can stop cookies from being used for cross-site tracking by either blocking or partitioning them.
  write: (secret) => { let expiry = new Date(); expiry.setFullYear(expiry.getFullYear() + 1); document.cookie = `secret=${secret}; SameSite=None; Secure`; } read: () => document.cookie ? document.cookie.match(/secret=(\S+)/)[1] : null result, same first party: c8e52af6-394e-4ba5-9e5a-768b2250c427, 7ac617e9-e2f8-488c-abe5-d4a86f2b2fba, 1404df63-2251-49f4-ac4c-bc952af1748f, 4b7501c2-9a6c-488c-b11a-6edd2d4d37f3, 99a93ab7-68c3-44c3-aff2-700393770f8b result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => { let expiry = new Date(); expiry.setFullYear(expiry.getFullYear() + 1); document.cookie = `secret=${secret}; SameSite=None; Secure`; } read: () => document.cookie ? document.cookie.match(/secret=(\S+)/)[1] : null result, same first party: 57d15629-4e8d-4236-8122-bc2699441dbb, 3fe9d13e-8755-46d2-8429-9a36af9b8a31, 110c1a21-8b0b-43be-98a3-6d7c6a7adb89, 0ca631f0-0924-46d4-89f1-8dd753849fa8, fddbc41f-7369-4847-9396-2eb671e081df result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => { let expiry = new Date(); expiry.setFullYear(expiry.getFullYear() + 1); document.cookie = `secret=${secret}; SameSite=None; Secure`; } read: () => document.cookie ? document.cookie.match(/secret=(\S+)/)[1] : null result, same first party: acecc55e-0c38-403f-b92d-5af30acf612a, 72dce12c-80c2-4d1e-9af7-33bb86e1d8fd, b8943e54-d369-4d25-81fc-d20916423114, b5035722-831b-4b8a-880b-19a0bdeb2c84, f376eedb-a883-4ac3-a7eb-2fe3769df4b3 result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => { let expiry = new Date(); expiry.setFullYear(expiry.getFullYear() + 1); document.cookie = `secret=${secret}; SameSite=None; Secure`; } read: () => document.cookie ? document.cookie.match(/secret=(\S+)/)[1] : null result, same first party: d58a44ed-765a-4364-8e8b-0817e0eb5ec3, 40fdba78-111f-43a9-8130-7021b3c60588, ed706a23-1b69-4d50-aca6-e2c3bc9041d7, 73368ce6-aa14-4622-923a-3140abe918b2, f9c5a914-2f36-4d12-a42a-d6be57549389 result, different first party: d58a44ed-765a-4364-8e8b-0817e0eb5ec3, 40fdba78-111f-43a9-8130-7021b3c60588, ed706a23-1b69-4d50-aca6-e2c3bc9041d7, 73368ce6-aa14-4622-923a-3140abe918b2, f9c5a914-2f36-4d12-a42a-d6be57549389 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { let expiry = new Date(); expiry.setFullYear(expiry.getFullYear() + 1); document.cookie = `secret=${secret}; SameSite=None; Secure`; } read: () => document.cookie ? document.cookie.match(/secret=(\S+)/)[1] : null result, same first party: 6702f336-1bd3-4e33-873d-c1f1109ad894, f7e7c7c5-21ac-47fb-a266-328b23d6b756, 872e3eaf-3210-4a01-839a-3c9640f67be3, 68dd4f2a-3b55-4f8c-bc4d-d210ad8f8eba, c024f4c5-fce3-4914-972a-3e0f82988162 result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => { let expiry = new Date(); expiry.setFullYear(expiry.getFullYear() + 1); document.cookie = `secret=${secret}; SameSite=None; Secure`; } read: () => document.cookie ? document.cookie.match(/secret=(\S+)/)[1] : null result, same first party: 38112110-ef99-4c99-933e-5018bda96f19, c6fc3aed-cc47-4cd4-b3ee-7eee6a6b2fc3, a5900671-1da4-4e1d-8a89-73903ad421bd, 18f6f36e-46ef-499c-9f3f-1eb2c483bedf, 55321559-3ea6-4886-a631-20a5c7f6f4a4 result, different first party: 38112110-ef99-4c99-933e-5018bda96f19, c6fc3aed-cc47-4cd4-b3ee-7eee6a6b2fc3, a5900671-1da4-4e1d-8a89-73903ad421bd, 18f6f36e-46ef-499c-9f3f-1eb2c483bedf, 55321559-3ea6-4886-a631-20a5c7f6f4a4 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { let expiry = new Date(); expiry.setFullYear(expiry.getFullYear() + 1); document.cookie = `secret=${secret}; SameSite=None; Secure`; } read: () => document.cookie ? document.cookie.match(/secret=(\S+)/)[1] : null result, same first party: abb7f980-2429-45ef-a355-7b9ab2fa415d, 63b995d6-b03d-4156-adc1-584b20f54156, e6ecd287-76e9-40e9-9acb-87df470b20b5, 2d9429d1-ed1e-454a-82c6-4a458391bf58, 4293188b-bd29-46d7-a33a-88c16f95bdf4 result, different first party: abb7f980-2429-45ef-a355-7b9ab2fa415d, 63b995d6-b03d-4156-adc1-584b20f54156, e6ecd287-76e9-40e9-9acb-87df470b20b5, 2d9429d1-ed1e-454a-82c6-4a458391bf58, 4293188b-bd29-46d7-a33a-88c16f95bdf4 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { let expiry = new Date(); expiry.setFullYear(expiry.getFullYear() + 1); document.cookie = `secret=${secret}; SameSite=None; Secure`; } read: () => document.cookie ? document.cookie.match(/secret=(\S+)/)[1] : null result, same first party: dfaf0d3a-3df5-4e5f-ad7a-4034a16cc25d, da10a4d6-a0b9-4f1e-8c86-e2a23b3b06cc, 2b5b28f0-e24b-4562-a5cf-115f0794b2a1, 2b69dc75-b49f-454c-a4ac-cabbc2c9be6a, 4ccd6c86-5d41-4a5a-b824-0811a085db96 result, different first party: dfaf0d3a-3df5-4e5f-ad7a-4034a16cc25d, da10a4d6-a0b9-4f1e-8c86-e2a23b3b06cc, 2b5b28f0-e24b-4562-a5cf-115f0794b2a1, 2b69dc75-b49f-454c-a4ac-cabbc2c9be6a, 4ccd6c86-5d41-4a5a-b824-0811a085db96 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { let expiry = new Date(); expiry.setFullYear(expiry.getFullYear() + 1); document.cookie = `secret=${secret}; SameSite=None; Secure`; } read: () => document.cookie ? document.cookie.match(/secret=(\S+)/)[1] : null result, same first party: ebe7674a-69fc-4832-9a56-02f8d56bc38f, 013e3f1e-4627-451f-972d-0ff7f47f2150, b26c59f9-2106-4da6-95dd-ce45a7772373, 9d2d77b8-6d0c-48d2-aa5e-8ed649b348b3, 4dcad743-499b-46d2-830c-b2293f944cf3 result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => { let expiry = new Date(); expiry.setFullYear(expiry.getFullYear() + 1); document.cookie = `secret=${secret}; SameSite=None; Secure`; } read: () => document.cookie ? document.cookie.match(/secret=(\S+)/)[1] : null result, same first party: 558455ca-ab7c-47ad-9d13-14723a3aa1c1, 2be408e8-df66-4012-b22f-675070920520, 652282fe-6f8d-4dd5-8087-c12fb99176e4, 2ff00698-f72a-443c-8ce9-bd81acea95b4, d562eddf-0239-4f80-8bbd-589eb568277b result, different first party: 558455ca-ab7c-47ad-9d13-14723a3aa1c1, 2be408e8-df66-4012-b22f-675070920520, 652282fe-6f8d-4dd5-8087-c12fb99176e4, 2ff00698-f72a-443c-8ce9-bd81acea95b4, d562eddf-0239-4f80-8bbd-589eb568277b unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { let expiry = new Date(); expiry.setFullYear(expiry.getFullYear() + 1); document.cookie = `secret=${secret}; SameSite=None; Secure`; } read: () => document.cookie ? document.cookie.match(/secret=(\S+)/)[1] : null result, same first party: 4a360b5f-ba1a-4cea-a8da-89bab0ffdfa6, 7d1f0819-2c2d-4dc5-8e21-0a80e95b64ee, 42d88b90-7100-40f0-bce3-4d2dfe73ff7e, a7fdeceb-0e25-44a6-b6fe-a508d7aea5b4, b7bcaa48-54f7-4f55-97d8-de76f417e955 result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => { let expiry = new Date(); expiry.setFullYear(expiry.getFullYear() + 1); document.cookie = `secret=${secret}; SameSite=None; Secure`; } read: () => document.cookie ? document.cookie.match(/secret=(\S+)/)[1] : null result, same first party: 13632dad-100d-4bbb-82ad-1f6affef616f, 32b60130-451a-4964-8bf8-84317dcba86e, 629d90d9-fabe-46dc-bd67-58812eb88f88, 0872209d-9185-4713-b394-19833302c180, 4d956e34-e340-4716-a118-e56856183614 result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => { let expiry = new Date(); expiry.setFullYear(expiry.getFullYear() + 1); document.cookie = `secret=${secret}; SameSite=None; Secure`; } read: () => document.cookie ? document.cookie.match(/secret=(\S+)/)[1] : null result, same first party: , , , , result, different first party: , , , , unsupported: false, false, false, false, false passed: undefined test failed: true, true, true, true, true
  write: (secret) => { let expiry = new Date(); expiry.setFullYear(expiry.getFullYear() + 1); document.cookie = `secret=${secret}; SameSite=None; Secure`; } read: () => document.cookie ? document.cookie.match(/secret=(\S+)/)[1] : null result, same first party: 23f319de-831d-495d-9b96-b346f764c5d3, 14f05b3b-1b00-4eca-b1a1-3a43391d920e, cbfe5b9c-1123-4c7a-956b-231d454acbb7, 34fdb1b1-c7f6-41ba-b0a2-4bdf0d06a240, 54029316-8ea8-4ad2-ac2d-eb50d7c981d1 result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => { let expiry = new Date(); expiry.setFullYear(expiry.getFullYear() + 1); document.cookie = `secret=${secret}; SameSite=None; Secure`; } read: () => document.cookie ? document.cookie.match(/secret=(\S+)/)[1] : null result, same first party: 16aca853-50e8-41e1-91c9-42e6b447ea0b, 1568704e-d4cd-48d5-b274-7dbd8c8c7e6a, 8c99f84e-0733-442d-bd0b-254bce33169e, 04c4a7a5-6dbe-491a-9dd2-3c538978f963, 1ea5d0ae-570c-4e85-9731-0526e3a0df65 result, different first party: 16aca853-50e8-41e1-91c9-42e6b447ea0b, 1568704e-d4cd-48d5-b274-7dbd8c8c7e6a, 8c99f84e-0733-442d-bd0b-254bce33169e, 04c4a7a5-6dbe-491a-9dd2-3c538978f963, 1ea5d0ae-570c-4e85-9731-0526e3a0df65 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { let expiry = new Date(); expiry.setFullYear(expiry.getFullYear() + 1); document.cookie = `secret=${secret}; SameSite=None; Secure`; } read: () => document.cookie ? document.cookie.match(/secret=(\S+)/)[1] : null result, same first party: d8fc412f-e3c8-46d9-9b44-70894a3c88bb, 41db4977-d4e9-437a-b6af-7121adad1a4d, d31c2b39-daa4-4c14-ba87-3b9a574057b8, 8379e908-5f32-490f-a01a-8cf8ccc7b509, ed6cd199-8552-42ce-8392-72f28db90cba result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
CSS cacheCSS stylesheets are cached, and if that cache is shared between websites, it can be used to track users across sites.
  write: async (key) => { const href = testURI("resource", "css", key); const head = document.getElementsByTagName("head")[0]; head.innerHTML += ``; const testElement = document.querySelector("#css"); let fontFamily; while (true) { await sleepMs(100); fontFamily = getComputedStyle(testElement).fontFamily; if (fontFamily.startsWith("fake")) { break; } } console.log(fontFamily); return key; } read: async (key) => { const href = testURI("resource", "css", key); const head = document.getElementsByTagName("head")[0]; head.innerHTML += ``; const testElement = document.querySelector("#css"); let fontFamily; while (true) { await sleepMs(100); fontFamily = getComputedStyle(testElement).fontFamily; if (fontFamily.startsWith("fake")) { break; } } console.log(fontFamily); return fontFamily; } result, same first party: fake_35017192012191045, fake_8323220414626824, fake_41365286053919426, fake_96823477719971, fake_3985165988086856 result, different first party: fake_8587993887823151, fake_5450657235530407, fake_4007584660447665, fake_9552268507937742, fake_9060010282905375 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { const href = testURI("resource", "css", key); const head = document.getElementsByTagName("head")[0]; head.innerHTML += ``; const testElement = document.querySelector("#css"); let fontFamily; while (true) { await sleepMs(100); fontFamily = getComputedStyle(testElement).fontFamily; if (fontFamily.startsWith("fake")) { break; } } console.log(fontFamily); return key; } read: async (key) => { const href = testURI("resource", "css", key); const head = document.getElementsByTagName("head")[0]; head.innerHTML += ``; const testElement = document.querySelector("#css"); let fontFamily; while (true) { await sleepMs(100); fontFamily = getComputedStyle(testElement).fontFamily; if (fontFamily.startsWith("fake")) { break; } } console.log(fontFamily); return fontFamily; } result, same first party: fake_5085877174501388, fake_9691927430532767, fake_6827345614871394, fake_40417264160756927, fake_5561559850552633 result, different first party: fake_45652939540734505, fake_29977527402277016, fake_9175690953884681, fake_5405823212539556, fake_998855460290017 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { const href = testURI("resource", "css", key); const head = document.getElementsByTagName("head")[0]; head.innerHTML += ``; const testElement = document.querySelector("#css"); let fontFamily; while (true) { await sleepMs(100); fontFamily = getComputedStyle(testElement).fontFamily; if (fontFamily.startsWith("fake")) { break; } } console.log(fontFamily); return key; } read: async (key) => { const href = testURI("resource", "css", key); const head = document.getElementsByTagName("head")[0]; head.innerHTML += ``; const testElement = document.querySelector("#css"); let fontFamily; while (true) { await sleepMs(100); fontFamily = getComputedStyle(testElement).fontFamily; if (fontFamily.startsWith("fake")) { break; } } console.log(fontFamily); return fontFamily; } result, same first party: fake_667110060915888, fake_8469176641168252, fake_7009484848499281, fake_24774677974543957, fake_15362244065219643 result, different first party: fake_19254948624801438, fake_6076901033685935, fake_546128829380842, fake_24774677974543957, fake_6594695732173779 unsupported: false, false, false, false, false passed: true, true, true, false, true test failed: false, false, false, false, false
  write: async (key) => { const href = testURI("resource", "css", key); const head = document.getElementsByTagName("head")[0]; head.innerHTML += ``; const testElement = document.querySelector("#css"); let fontFamily; while (true) { await sleepMs(100); fontFamily = getComputedStyle(testElement).fontFamily; if (fontFamily.startsWith("fake")) { break; } } console.log(fontFamily); return key; } read: async (key) => { const href = testURI("resource", "css", key); const head = document.getElementsByTagName("head")[0]; head.innerHTML += ``; const testElement = document.querySelector("#css"); let fontFamily; while (true) { await sleepMs(100); fontFamily = getComputedStyle(testElement).fontFamily; if (fontFamily.startsWith("fake")) { break; } } console.log(fontFamily); return fontFamily; } result, same first party: fake_9496265283564909, fake_6949045113320578, fake_08601404448294292, fake_8144315869815739, fake_2136108292511465 result, different first party: fake_9496265283564909, fake_6949045113320578, fake_08601404448294292, fake_8144315869815739, fake_2136108292511465 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { const href = testURI("resource", "css", key); const head = document.getElementsByTagName("head")[0]; head.innerHTML += ``; const testElement = document.querySelector("#css"); let fontFamily; while (true) { await sleepMs(100); fontFamily = getComputedStyle(testElement).fontFamily; if (fontFamily.startsWith("fake")) { break; } } console.log(fontFamily); return key; } read: async (key) => { const href = testURI("resource", "css", key); const head = document.getElementsByTagName("head")[0]; head.innerHTML += ``; const testElement = document.querySelector("#css"); let fontFamily; while (true) { await sleepMs(100); fontFamily = getComputedStyle(testElement).fontFamily; if (fontFamily.startsWith("fake")) { break; } } console.log(fontFamily); return fontFamily; } result, same first party: fake_8954173921281199, fake_8466403056377754, fake_10556169068438659, fake_28270852878827535, fake_9208345208007818 result, different first party: fake_8954173921281199, fake_8466403056377754, fake_10556169068438659, fake_28270852878827535, fake_9208345208007818 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { const href = testURI("resource", "css", key); const head = document.getElementsByTagName("head")[0]; head.innerHTML += ``; const testElement = document.querySelector("#css"); let fontFamily; while (true) { await sleepMs(100); fontFamily = getComputedStyle(testElement).fontFamily; if (fontFamily.startsWith("fake")) { break; } } console.log(fontFamily); return key; } read: async (key) => { const href = testURI("resource", "css", key); const head = document.getElementsByTagName("head")[0]; head.innerHTML += ``; const testElement = document.querySelector("#css"); let fontFamily; while (true) { await sleepMs(100); fontFamily = getComputedStyle(testElement).fontFamily; if (fontFamily.startsWith("fake")) { break; } } console.log(fontFamily); return fontFamily; } result, same first party: fake_7893049901626927, fake_08121572050630999, fake_3210530311988593, fake_2440654052916238, fake_29143239420039624 result, different first party: fake_7893049901626927, fake_08121572050630999, fake_3210530311988593, fake_2440654052916238, fake_29143239420039624 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { const href = testURI("resource", "css", key); const head = document.getElementsByTagName("head")[0]; head.innerHTML += ``; const testElement = document.querySelector("#css"); let fontFamily; while (true) { await sleepMs(100); fontFamily = getComputedStyle(testElement).fontFamily; if (fontFamily.startsWith("fake")) { break; } } console.log(fontFamily); return key; } read: async (key) => { const href = testURI("resource", "css", key); const head = document.getElementsByTagName("head")[0]; head.innerHTML += ``; const testElement = document.querySelector("#css"); let fontFamily; while (true) { await sleepMs(100); fontFamily = getComputedStyle(testElement).fontFamily; if (fontFamily.startsWith("fake")) { break; } } console.log(fontFamily); return fontFamily; } result, same first party: fake_39710931422380225, fake_31919929114685863, fake_7056406036524634, fake_7549784944336302, fake_8478889093519311 result, different first party: fake_39710931422380225, fake_31919929114685863, fake_7056406036524634, fake_7549784944336302, fake_8478889093519311 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { const href = testURI("resource", "css", key); const head = document.getElementsByTagName("head")[0]; head.innerHTML += ``; const testElement = document.querySelector("#css"); let fontFamily; while (true) { await sleepMs(100); fontFamily = getComputedStyle(testElement).fontFamily; if (fontFamily.startsWith("fake")) { break; } } console.log(fontFamily); return key; } read: async (key) => { const href = testURI("resource", "css", key); const head = document.getElementsByTagName("head")[0]; head.innerHTML += ``; const testElement = document.querySelector("#css"); let fontFamily; while (true) { await sleepMs(100); fontFamily = getComputedStyle(testElement).fontFamily; if (fontFamily.startsWith("fake")) { break; } } console.log(fontFamily); return fontFamily; } result, same first party: fake_49078635701698614, fake_39120989436372566, fake_6989669164310521, fake_533525427911522, fake_40698398170352834 result, different first party: fake_19937407989504785, fake_6857094180964856, fake_9646942090892672, fake_9940760679616643, fake_9271312243503185 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { const href = testURI("resource", "css", key); const head = document.getElementsByTagName("head")[0]; head.innerHTML += ``; const testElement = document.querySelector("#css"); let fontFamily; while (true) { await sleepMs(100); fontFamily = getComputedStyle(testElement).fontFamily; if (fontFamily.startsWith("fake")) { break; } } console.log(fontFamily); return key; } read: async (key) => { const href = testURI("resource", "css", key); const head = document.getElementsByTagName("head")[0]; head.innerHTML += ``; const testElement = document.querySelector("#css"); let fontFamily; while (true) { await sleepMs(100); fontFamily = getComputedStyle(testElement).fontFamily; if (fontFamily.startsWith("fake")) { break; } } console.log(fontFamily); return fontFamily; } result, same first party: fake_9550148749544896, fake_05622514841608539, fake_6672835909150026, fake_471752854567578, fake_8536243779921275 result, different first party: fake_24880145113737862, fake_01755461436526118, fake_41329876774039365, fake_1227474173351728, fake_5450524032532063 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { const href = testURI("resource", "css", key); const head = document.getElementsByTagName("head")[0]; head.innerHTML += ``; const testElement = document.querySelector("#css"); let fontFamily; while (true) { await sleepMs(100); fontFamily = getComputedStyle(testElement).fontFamily; if (fontFamily.startsWith("fake")) { break; } } console.log(fontFamily); return key; } read: async (key) => { const href = testURI("resource", "css", key); const head = document.getElementsByTagName("head")[0]; head.innerHTML += ``; const testElement = document.querySelector("#css"); let fontFamily; while (true) { await sleepMs(100); fontFamily = getComputedStyle(testElement).fontFamily; if (fontFamily.startsWith("fake")) { break; } } console.log(fontFamily); return fontFamily; } result, same first party: fake_574131783961314, fake_41387411685939535, fake_22830278324413888, fake_5229773716758808, fake_30816494151519946 result, different first party: fake_5304090172222755, fake_41387411685939535, fake_22830278324413888, fake_5229773716758808, fake_30816494151519946 unsupported: false, false, false, false, false passed: true, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { const href = testURI("resource", "css", key); const head = document.getElementsByTagName("head")[0]; head.innerHTML += ``; const testElement = document.querySelector("#css"); let fontFamily; while (true) { await sleepMs(100); fontFamily = getComputedStyle(testElement).fontFamily; if (fontFamily.startsWith("fake")) { break; } } console.log(fontFamily); return key; } read: async (key) => { const href = testURI("resource", "css", key); const head = document.getElementsByTagName("head")[0]; head.innerHTML += ``; const testElement = document.querySelector("#css"); let fontFamily; while (true) { await sleepMs(100); fontFamily = getComputedStyle(testElement).fontFamily; if (fontFamily.startsWith("fake")) { break; } } console.log(fontFamily); return fontFamily; } result, same first party: fake_3758426041151699, fake_8236728317917241, fake_045566908076706714, fake_7401232396768089, fake_5474605473630125 result, different first party: fake_7158603183738745, fake_9262005462560767, fake_5236332892107269, fake_10491596176128826, fake_33911444437067306 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { const href = testURI("resource", "css", key); const head = document.getElementsByTagName("head")[0]; head.innerHTML += ``; const testElement = document.querySelector("#css"); let fontFamily; while (true) { await sleepMs(100); fontFamily = getComputedStyle(testElement).fontFamily; if (fontFamily.startsWith("fake")) { break; } } console.log(fontFamily); return key; } read: async (key) => { const href = testURI("resource", "css", key); const head = document.getElementsByTagName("head")[0]; head.innerHTML += ``; const testElement = document.querySelector("#css"); let fontFamily; while (true) { await sleepMs(100); fontFamily = getComputedStyle(testElement).fontFamily; if (fontFamily.startsWith("fake")) { break; } } console.log(fontFamily); return fontFamily; } result, same first party: fake_9499349473893286, fake_2768803089841765, fake_609964847044048, fake_7982898853467977, fake_1488316524933464 result, different first party: fake_8583693024754884, fake_8889609068614155, fake_7621217903009021, fake_41576035235716713, fake_514487828797187 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { const href = testURI("resource", "css", key); const head = document.getElementsByTagName("head")[0]; head.innerHTML += ``; const testElement = document.querySelector("#css"); let fontFamily; while (true) { await sleepMs(100); fontFamily = getComputedStyle(testElement).fontFamily; if (fontFamily.startsWith("fake")) { break; } } console.log(fontFamily); return key; } read: async (key) => { const href = testURI("resource", "css", key); const head = document.getElementsByTagName("head")[0]; head.innerHTML += ``; const testElement = document.querySelector("#css"); let fontFamily; while (true) { await sleepMs(100); fontFamily = getComputedStyle(testElement).fontFamily; if (fontFamily.startsWith("fake")) { break; } } console.log(fontFamily); return fontFamily; } result, same first party: fake_17052292656725632, fake_45297601465810966, fake_9851297428680006, fake_1062644788434608, fake_9317358657458039 result, different first party: fake_9027616858456808, fake_3371626907204126, fake_6646489861928269, fake_2104963011793093, fake_29751533591985635 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { const href = testURI("resource", "css", key); const head = document.getElementsByTagName("head")[0]; head.innerHTML += ``; const testElement = document.querySelector("#css"); let fontFamily; while (true) { await sleepMs(100); fontFamily = getComputedStyle(testElement).fontFamily; if (fontFamily.startsWith("fake")) { break; } } console.log(fontFamily); return key; } read: async (key) => { const href = testURI("resource", "css", key); const head = document.getElementsByTagName("head")[0]; head.innerHTML += ``; const testElement = document.querySelector("#css"); let fontFamily; while (true) { await sleepMs(100); fontFamily = getComputedStyle(testElement).fontFamily; if (fontFamily.startsWith("fake")) { break; } } console.log(fontFamily); return fontFamily; } result, same first party: fake_632388170844286, fake_755436348478133, fake_21916366768955808, fake_4887576516699752, fake_6184629397311838 result, different first party: fake_7341283790392181, fake_9448637487123797, fake_8455724047234803, fake_1495677700460718, fake_06400080250244988 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { const href = testURI("resource", "css", key); const head = document.getElementsByTagName("head")[0]; head.innerHTML += ``; const testElement = document.querySelector("#css"); let fontFamily; while (true) { await sleepMs(100); fontFamily = getComputedStyle(testElement).fontFamily; if (fontFamily.startsWith("fake")) { break; } } console.log(fontFamily); return key; } read: async (key) => { const href = testURI("resource", "css", key); const head = document.getElementsByTagName("head")[0]; head.innerHTML += ``; const testElement = document.querySelector("#css"); let fontFamily; while (true) { await sleepMs(100); fontFamily = getComputedStyle(testElement).fontFamily; if (fontFamily.startsWith("fake")) { break; } } console.log(fontFamily); return fontFamily; } result, same first party: fake_6835690009149666, fake_11935122732576531, fake_2280018762163396, fake_435853420289936, fake_057401802171912486 result, different first party: fake_4558349068110834, fake_9403547366251683, fake_1600994926715007, fake_435853420289936, fake_057401802171912486 unsupported: false, false, false, false, false passed: true, true, true, false, false test failed: false, false, false, false, false
  write: async (key) => { const href = testURI("resource", "css", key); const head = document.getElementsByTagName("head")[0]; head.innerHTML += ``; const testElement = document.querySelector("#css"); let fontFamily; while (true) { await sleepMs(100); fontFamily = getComputedStyle(testElement).fontFamily; if (fontFamily.startsWith("fake")) { break; } } console.log(fontFamily); return key; } read: async (key) => { const href = testURI("resource", "css", key); const head = document.getElementsByTagName("head")[0]; head.innerHTML += ``; const testElement = document.querySelector("#css"); let fontFamily; while (true) { await sleepMs(100); fontFamily = getComputedStyle(testElement).fontFamily; if (fontFamily.startsWith("fake")) { break; } } console.log(fontFamily); return fontFamily; } result, same first party: fake_04542962892313218, fake_7956293769099227, fake_6206920671476599, fake_09445230511354219, fake_9645383690306906 result, different first party: fake_8193620546554983, fake_8565321123732332, fake_08864034904228402, fake_7884427630145567, fake_9526038522370113 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
favicon cacheA favicon is an icon that represents a website, typically shown in browser tab and bookmarks menu. If the favicon cache is not partitioned, it can be used to track users across websites.
  write: (key) => key read: async (key) => { // Wait for the favicon to load (defined in supercookies.html) await sleepMs(500); let response = await fetch( testURI("ctr", "favicon", key), {"cache": "reload"}); let count = (await response.text()).trim(); if (count === "0") { throw new Error("No requests received"); } return count; } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (key) => key read: async (key) => { // Wait for the favicon to load (defined in supercookies.html) await sleepMs(500); let response = await fetch( testURI("ctr", "favicon", key), {"cache": "reload"}); let count = (await response.text()).trim(); if (count === "0") { throw new Error("No requests received"); } return count; } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (key) => key read: async (key) => { // Wait for the favicon to load (defined in supercookies.html) await sleepMs(500); let response = await fetch( testURI("ctr", "favicon", key), {"cache": "reload"}); let count = (await response.text()).trim(); if (count === "0") { throw new Error("No requests received"); } return count; } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (key) => key read: async (key) => { // Wait for the favicon to load (defined in supercookies.html) await sleepMs(500); let response = await fetch( testURI("ctr", "favicon", key), {"cache": "reload"}); let count = (await response.text()).trim(); if (count === "0") { throw new Error("No requests received"); } return count; } result, same first party: 1, 1, 1, 1, 1 result, different first party: 1, 1, 1, 1, 1 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (key) => key read: async (key) => { // Wait for the favicon to load (defined in supercookies.html) await sleepMs(500); let response = await fetch( testURI("ctr", "favicon", key), {"cache": "reload"}); let count = (await response.text()).trim(); if (count === "0") { throw new Error("No requests received"); } return count; } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (key) => key read: async (key) => { // Wait for the favicon to load (defined in supercookies.html) await sleepMs(500); let response = await fetch( testURI("ctr", "favicon", key), {"cache": "reload"}); let count = (await response.text()).trim(); if (count === "0") { throw new Error("No requests received"); } return count; } result, same first party: 1, 1, 1, 1, 1 result, different first party: 1, 1, 1, 1, 1 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (key) => key read: async (key) => { // Wait for the favicon to load (defined in supercookies.html) await sleepMs(500); let response = await fetch( testURI("ctr", "favicon", key), {"cache": "reload"}); let count = (await response.text()).trim(); if (count === "0") { throw new Error("No requests received"); } return count; } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (key) => key read: async (key) => { // Wait for the favicon to load (defined in supercookies.html) await sleepMs(500); let response = await fetch( testURI("ctr", "favicon", key), {"cache": "reload"}); let count = (await response.text()).trim(); if (count === "0") { throw new Error("No requests received"); } return count; } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (key) => key read: async (key) => { // Wait for the favicon to load (defined in supercookies.html) await sleepMs(500); let response = await fetch( testURI("ctr", "favicon", key), {"cache": "reload"}); let count = (await response.text()).trim(); if (count === "0") { throw new Error("No requests received"); } return count; } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (key) => key read: async (key) => { // Wait for the favicon to load (defined in supercookies.html) await sleepMs(500); let response = await fetch( testURI("ctr", "favicon", key), {"cache": "reload"}); let count = (await response.text()).trim(); if (count === "0") { throw new Error("No requests received"); } return count; } result, same first party: 1, 1, 1, 1, 1 result, different first party: 1, 1, 1, 1, 1 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (key) => key read: async (key) => { // Wait for the favicon to load (defined in supercookies.html) await sleepMs(500); let response = await fetch( testURI("ctr", "favicon", key), {"cache": "reload"}); let count = (await response.text()).trim(); if (count === "0") { throw new Error("No requests received"); } return count; } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (key) => key read: async (key) => { // Wait for the favicon to load (defined in supercookies.html) await sleepMs(500); let response = await fetch( testURI("ctr", "favicon", key), {"cache": "reload"}); let count = (await response.text()).trim(); if (count === "0") { throw new Error("No requests received"); } return count; } result, same first party: 1, 1, 1, 1, 1 result, different first party: 1, 1, 1, 1, 1 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (key) => key read: async (key) => { // Wait for the favicon to load (defined in supercookies.html) await sleepMs(500); let response = await fetch( testURI("ctr", "favicon", key), {"cache": "reload"}); let count = (await response.text()).trim(); if (count === "0") { throw new Error("No requests received"); } return count; } result, same first party: 1, 1, 1, 1, 1 result, different first party: 1, 1, 1, 1, 1 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (key) => key read: async (key) => { // Wait for the favicon to load (defined in supercookies.html) await sleepMs(500); let response = await fetch( testURI("ctr", "favicon", key), {"cache": "reload"}); let count = (await response.text()).trim(); if (count === "0") { throw new Error("No requests received"); } return count; } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (key) => key read: async (key) => { // Wait for the favicon to load (defined in supercookies.html) await sleepMs(500); let response = await fetch( testURI("ctr", "favicon", key), {"cache": "reload"}); let count = (await response.text()).trim(); if (count === "0") { throw new Error("No requests received"); } return count; } result, same first party: 2, 2, 2, 2, 2 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (key) => key read: async (key) => { // Wait for the favicon to load (defined in supercookies.html) await sleepMs(500); let response = await fetch( testURI("ctr", "favicon", key), {"cache": "reload"}); let count = (await response.text()).trim(); if (count === "0") { throw new Error("No requests received"); } return count; } result, same first party: 2, 2, 2, 2, 2 result, different first party: 3, 3, 3, 3, 3 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
fetch cacheWhen a resource is received via the Fetch API, it is frequently cached. That cache can potentially be abused for cross-site tracking.
  write: async (key) => { let response = await fetch(testURI("resource", "fetch", key), {cache: "force-cache"}); return key; } read: async (key) => { let response = await fetch(testURI("resource", "fetch", key), {cache: "force-cache"}); let countResponse = await fetch(testURI("ctr", "fetch", key), {cache: "reload"}); return (await countResponse.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { let response = await fetch(testURI("resource", "fetch", key), {cache: "force-cache"}); return key; } read: async (key) => { let response = await fetch(testURI("resource", "fetch", key), {cache: "force-cache"}); let countResponse = await fetch(testURI("ctr", "fetch", key), {cache: "reload"}); return (await countResponse.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { let response = await fetch(testURI("resource", "fetch", key), {cache: "force-cache"}); return key; } read: async (key) => { let response = await fetch(testURI("resource", "fetch", key), {cache: "force-cache"}); let countResponse = await fetch(testURI("ctr", "fetch", key), {cache: "reload"}); return (await countResponse.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { let response = await fetch(testURI("resource", "fetch", key), {cache: "force-cache"}); return key; } read: async (key) => { let response = await fetch(testURI("resource", "fetch", key), {cache: "force-cache"}); let countResponse = await fetch(testURI("ctr", "fetch", key), {cache: "reload"}); return (await countResponse.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { let response = await fetch(testURI("resource", "fetch", key), {cache: "force-cache"}); return key; } read: async (key) => { let response = await fetch(testURI("resource", "fetch", key), {cache: "force-cache"}); let countResponse = await fetch(testURI("ctr", "fetch", key), {cache: "reload"}); return (await countResponse.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { let response = await fetch(testURI("resource", "fetch", key), {cache: "force-cache"}); return key; } read: async (key) => { let response = await fetch(testURI("resource", "fetch", key), {cache: "force-cache"}); let countResponse = await fetch(testURI("ctr", "fetch", key), {cache: "reload"}); return (await countResponse.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { let response = await fetch(testURI("resource", "fetch", key), {cache: "force-cache"}); return key; } read: async (key) => { let response = await fetch(testURI("resource", "fetch", key), {cache: "force-cache"}); let countResponse = await fetch(testURI("ctr", "fetch", key), {cache: "reload"}); return (await countResponse.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { let response = await fetch(testURI("resource", "fetch", key), {cache: "force-cache"}); return key; } read: async (key) => { let response = await fetch(testURI("resource", "fetch", key), {cache: "force-cache"}); let countResponse = await fetch(testURI("ctr", "fetch", key), {cache: "reload"}); return (await countResponse.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { let response = await fetch(testURI("resource", "fetch", key), {cache: "force-cache"}); return key; } read: async (key) => { let response = await fetch(testURI("resource", "fetch", key), {cache: "force-cache"}); let countResponse = await fetch(testURI("ctr", "fetch", key), {cache: "reload"}); return (await countResponse.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { let response = await fetch(testURI("resource", "fetch", key), {cache: "force-cache"}); return key; } read: async (key) => { let response = await fetch(testURI("resource", "fetch", key), {cache: "force-cache"}); let countResponse = await fetch(testURI("ctr", "fetch", key), {cache: "reload"}); return (await countResponse.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { let response = await fetch(testURI("resource", "fetch", key), {cache: "force-cache"}); return key; } read: async (key) => { let response = await fetch(testURI("resource", "fetch", key), {cache: "force-cache"}); let countResponse = await fetch(testURI("ctr", "fetch", key), {cache: "reload"}); return (await countResponse.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { let response = await fetch(testURI("resource", "fetch", key), {cache: "force-cache"}); return key; } read: async (key) => { let response = await fetch(testURI("resource", "fetch", key), {cache: "force-cache"}); let countResponse = await fetch(testURI("ctr", "fetch", key), {cache: "reload"}); return (await countResponse.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { let response = await fetch(testURI("resource", "fetch", key), {cache: "force-cache"}); return key; } read: async (key) => { let response = await fetch(testURI("resource", "fetch", key), {cache: "force-cache"}); let countResponse = await fetch(testURI("ctr", "fetch", key), {cache: "reload"}); return (await countResponse.text()).trim(); } result, same first party: 2, 2, 2, 2, 2 result, different first party: 3, 3, 3, 3, 3 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { let response = await fetch(testURI("resource", "fetch", key), {cache: "force-cache"}); return key; } read: async (key) => { let response = await fetch(testURI("resource", "fetch", key), {cache: "force-cache"}); let countResponse = await fetch(testURI("ctr", "fetch", key), {cache: "reload"}); return (await countResponse.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { let response = await fetch(testURI("resource", "fetch", key), {cache: "force-cache"}); return key; } read: async (key) => { let response = await fetch(testURI("resource", "fetch", key), {cache: "force-cache"}); let countResponse = await fetch(testURI("ctr", "fetch", key), {cache: "reload"}); return (await countResponse.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { let response = await fetch(testURI("resource", "fetch", key), {cache: "force-cache"}); return key; } read: async (key) => { let response = await fetch(testURI("resource", "fetch", key), {cache: "force-cache"}); let countResponse = await fetch(testURI("ctr", "fetch", key), {cache: "reload"}); return (await countResponse.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
font cacheWeb fonts are sometimes stored in their own cache, which is vulnerable to being abused for cross-site tracking.
  write: async (key) => { let style = document.createElement("style"); style.type='text/css'; let fontURI = testURI("resource", "font", key); style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`; document.getElementsByTagName("head")[0].appendChild(style); return key; } read: async (key) => { let style = document.createElement("style"); style.type='text/css'; let fontURI = testURI("resource", "font", key); style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`; document.getElementsByTagName("head")[0].appendChild(style); await sleepMs(500); let response = await fetch( testURI("ctr", "font", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { let style = document.createElement("style"); style.type='text/css'; let fontURI = testURI("resource", "font", key); style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`; document.getElementsByTagName("head")[0].appendChild(style); return key; } read: async (key) => { let style = document.createElement("style"); style.type='text/css'; let fontURI = testURI("resource", "font", key); style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`; document.getElementsByTagName("head")[0].appendChild(style); await sleepMs(500); let response = await fetch( testURI("ctr", "font", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 1, 1, 1, 1, 1 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { let style = document.createElement("style"); style.type='text/css'; let fontURI = testURI("resource", "font", key); style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`; document.getElementsByTagName("head")[0].appendChild(style); return key; } read: async (key) => { let style = document.createElement("style"); style.type='text/css'; let fontURI = testURI("resource", "font", key); style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`; document.getElementsByTagName("head")[0].appendChild(style); await sleepMs(500); let response = await fetch( testURI("ctr", "font", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 1, 1, 1, 1, 1 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { let style = document.createElement("style"); style.type='text/css'; let fontURI = testURI("resource", "font", key); style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`; document.getElementsByTagName("head")[0].appendChild(style); return key; } read: async (key) => { let style = document.createElement("style"); style.type='text/css'; let fontURI = testURI("resource", "font", key); style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`; document.getElementsByTagName("head")[0].appendChild(style); await sleepMs(500); let response = await fetch( testURI("ctr", "font", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 1, 1, 1, 1, 1 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { let style = document.createElement("style"); style.type='text/css'; let fontURI = testURI("resource", "font", key); style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`; document.getElementsByTagName("head")[0].appendChild(style); return key; } read: async (key) => { let style = document.createElement("style"); style.type='text/css'; let fontURI = testURI("resource", "font", key); style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`; document.getElementsByTagName("head")[0].appendChild(style); await sleepMs(500); let response = await fetch( testURI("ctr", "font", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 1, 1, 1, 1, 1 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { let style = document.createElement("style"); style.type='text/css'; let fontURI = testURI("resource", "font", key); style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`; document.getElementsByTagName("head")[0].appendChild(style); return key; } read: async (key) => { let style = document.createElement("style"); style.type='text/css'; let fontURI = testURI("resource", "font", key); style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`; document.getElementsByTagName("head")[0].appendChild(style); await sleepMs(500); let response = await fetch( testURI("ctr", "font", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 1, 1, 1, 1, 1 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { let style = document.createElement("style"); style.type='text/css'; let fontURI = testURI("resource", "font", key); style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`; document.getElementsByTagName("head")[0].appendChild(style); return key; } read: async (key) => { let style = document.createElement("style"); style.type='text/css'; let fontURI = testURI("resource", "font", key); style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`; document.getElementsByTagName("head")[0].appendChild(style); await sleepMs(500); let response = await fetch( testURI("ctr", "font", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 1, 1, 1, 1, 1 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { let style = document.createElement("style"); style.type='text/css'; let fontURI = testURI("resource", "font", key); style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`; document.getElementsByTagName("head")[0].appendChild(style); return key; } read: async (key) => { let style = document.createElement("style"); style.type='text/css'; let fontURI = testURI("resource", "font", key); style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`; document.getElementsByTagName("head")[0].appendChild(style); await sleepMs(500); let response = await fetch( testURI("ctr", "font", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { let style = document.createElement("style"); style.type='text/css'; let fontURI = testURI("resource", "font", key); style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`; document.getElementsByTagName("head")[0].appendChild(style); return key; } read: async (key) => { let style = document.createElement("style"); style.type='text/css'; let fontURI = testURI("resource", "font", key); style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`; document.getElementsByTagName("head")[0].appendChild(style); await sleepMs(500); let response = await fetch( testURI("ctr", "font", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { let style = document.createElement("style"); style.type='text/css'; let fontURI = testURI("resource", "font", key); style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`; document.getElementsByTagName("head")[0].appendChild(style); return key; } read: async (key) => { let style = document.createElement("style"); style.type='text/css'; let fontURI = testURI("resource", "font", key); style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`; document.getElementsByTagName("head")[0].appendChild(style); await sleepMs(500); let response = await fetch( testURI("ctr", "font", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 1, 1, 1, 1, 1 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { let style = document.createElement("style"); style.type='text/css'; let fontURI = testURI("resource", "font", key); style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`; document.getElementsByTagName("head")[0].appendChild(style); return key; } read: async (key) => { let style = document.createElement("style"); style.type='text/css'; let fontURI = testURI("resource", "font", key); style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`; document.getElementsByTagName("head")[0].appendChild(style); await sleepMs(500); let response = await fetch( testURI("ctr", "font", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 1, 1, 1, 1, 1 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { let style = document.createElement("style"); style.type='text/css'; let fontURI = testURI("resource", "font", key); style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`; document.getElementsByTagName("head")[0].appendChild(style); return key; } read: async (key) => { let style = document.createElement("style"); style.type='text/css'; let fontURI = testURI("resource", "font", key); style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`; document.getElementsByTagName("head")[0].appendChild(style); await sleepMs(500); let response = await fetch( testURI("ctr", "font", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { let style = document.createElement("style"); style.type='text/css'; let fontURI = testURI("resource", "font", key); style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`; document.getElementsByTagName("head")[0].appendChild(style); return key; } read: async (key) => { let style = document.createElement("style"); style.type='text/css'; let fontURI = testURI("resource", "font", key); style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`; document.getElementsByTagName("head")[0].appendChild(style); await sleepMs(500); let response = await fetch( testURI("ctr", "font", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 2, 2, 2, 2, 2 result, different first party: 3, 3, 3, 3, 3 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { let style = document.createElement("style"); style.type='text/css'; let fontURI = testURI("resource", "font", key); style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`; document.getElementsByTagName("head")[0].appendChild(style); return key; } read: async (key) => { let style = document.createElement("style"); style.type='text/css'; let fontURI = testURI("resource", "font", key); style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`; document.getElementsByTagName("head")[0].appendChild(style); await sleepMs(500); let response = await fetch( testURI("ctr", "font", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { let style = document.createElement("style"); style.type='text/css'; let fontURI = testURI("resource", "font", key); style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`; document.getElementsByTagName("head")[0].appendChild(style); return key; } read: async (key) => { let style = document.createElement("style"); style.type='text/css'; let fontURI = testURI("resource", "font", key); style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`; document.getElementsByTagName("head")[0].appendChild(style); await sleepMs(500); let response = await fetch( testURI("ctr", "font", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 1, 1, 1, 1, 1 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { let style = document.createElement("style"); style.type='text/css'; let fontURI = testURI("resource", "font", key); style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`; document.getElementsByTagName("head")[0].appendChild(style); return key; } read: async (key) => { let style = document.createElement("style"); style.type='text/css'; let fontURI = testURI("resource", "font", key); style.innerHTML = `@font-face {font-family: "myFont"; src: url("${fontURI}"); } body { font-family: "myFont" }`; document.getElementsByTagName("head")[0].appendChild(style); await sleepMs(500); let response = await fetch( testURI("ctr", "font", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 1, 1, 1, 1, 1 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
H1 connectionHTTP/1.x are the classic web connection protocols. If these connections are re-used across websites, they can be used to track users.
  write: async (secret) => { await fetch(`https://h1.arthuredelstein.net:8901/?mode=write&secret=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h1.arthuredelstein.net:8901/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: c8e52af6-394e-4ba5-9e5a-768b2250c427, 7ac617e9-e2f8-488c-abe5-d4a86f2b2fba, 1404df63-2251-49f4-ac4c-bc952af1748f, 4b7501c2-9a6c-488c-b11a-6edd2d4d37f3, 99a93ab7-68c3-44c3-aff2-700393770f8b result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h1.arthuredelstein.net:8901/?mode=write&secret=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h1.arthuredelstein.net:8901/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: 57d15629-4e8d-4236-8122-bc2699441dbb, 3fe9d13e-8755-46d2-8429-9a36af9b8a31, 110c1a21-8b0b-43be-98a3-6d7c6a7adb89, 0ca631f0-0924-46d4-89f1-8dd753849fa8, fddbc41f-7369-4847-9396-2eb671e081df result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h1.arthuredelstein.net:8901/?mode=write&secret=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h1.arthuredelstein.net:8901/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: acecc55e-0c38-403f-b92d-5af30acf612a, 72dce12c-80c2-4d1e-9af7-33bb86e1d8fd, b8943e54-d369-4d25-81fc-d20916423114, b5035722-831b-4b8a-880b-19a0bdeb2c84, f376eedb-a883-4ac3-a7eb-2fe3769df4b3 result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h1.arthuredelstein.net:8901/?mode=write&secret=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h1.arthuredelstein.net:8901/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: d58a44ed-765a-4364-8e8b-0817e0eb5ec3, 40fdba78-111f-43a9-8130-7021b3c60588, ed706a23-1b69-4d50-aca6-e2c3bc9041d7, 73368ce6-aa14-4622-923a-3140abe918b2, f9c5a914-2f36-4d12-a42a-d6be57549389 result, different first party: d58a44ed-765a-4364-8e8b-0817e0eb5ec3, 40fdba78-111f-43a9-8130-7021b3c60588, ed706a23-1b69-4d50-aca6-e2c3bc9041d7, 73368ce6-aa14-4622-923a-3140abe918b2, f9c5a914-2f36-4d12-a42a-d6be57549389 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h1.arthuredelstein.net:8901/?mode=write&secret=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h1.arthuredelstein.net:8901/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: 6702f336-1bd3-4e33-873d-c1f1109ad894, f7e7c7c5-21ac-47fb-a266-328b23d6b756, 872e3eaf-3210-4a01-839a-3c9640f67be3, 68dd4f2a-3b55-4f8c-bc4d-d210ad8f8eba, c024f4c5-fce3-4914-972a-3e0f82988162 result, different first party: 6702f336-1bd3-4e33-873d-c1f1109ad894, f7e7c7c5-21ac-47fb-a266-328b23d6b756, 872e3eaf-3210-4a01-839a-3c9640f67be3, 68dd4f2a-3b55-4f8c-bc4d-d210ad8f8eba, c024f4c5-fce3-4914-972a-3e0f82988162 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h1.arthuredelstein.net:8901/?mode=write&secret=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h1.arthuredelstein.net:8901/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: 38112110-ef99-4c99-933e-5018bda96f19, c6fc3aed-cc47-4cd4-b3ee-7eee6a6b2fc3, a5900671-1da4-4e1d-8a89-73903ad421bd, 18f6f36e-46ef-499c-9f3f-1eb2c483bedf, 55321559-3ea6-4886-a631-20a5c7f6f4a4 result, different first party: 38112110-ef99-4c99-933e-5018bda96f19, c6fc3aed-cc47-4cd4-b3ee-7eee6a6b2fc3, a5900671-1da4-4e1d-8a89-73903ad421bd, 18f6f36e-46ef-499c-9f3f-1eb2c483bedf, 55321559-3ea6-4886-a631-20a5c7f6f4a4 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h1.arthuredelstein.net:8901/?mode=write&secret=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h1.arthuredelstein.net:8901/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: abb7f980-2429-45ef-a355-7b9ab2fa415d, 63b995d6-b03d-4156-adc1-584b20f54156, e6ecd287-76e9-40e9-9acb-87df470b20b5, 2d9429d1-ed1e-454a-82c6-4a458391bf58, 4293188b-bd29-46d7-a33a-88c16f95bdf4 result, different first party: abb7f980-2429-45ef-a355-7b9ab2fa415d, 63b995d6-b03d-4156-adc1-584b20f54156, e6ecd287-76e9-40e9-9acb-87df470b20b5, 2d9429d1-ed1e-454a-82c6-4a458391bf58, 4293188b-bd29-46d7-a33a-88c16f95bdf4 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h1.arthuredelstein.net:8901/?mode=write&secret=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h1.arthuredelstein.net:8901/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: dfaf0d3a-3df5-4e5f-ad7a-4034a16cc25d, da10a4d6-a0b9-4f1e-8c86-e2a23b3b06cc, 2b5b28f0-e24b-4562-a5cf-115f0794b2a1, 2b69dc75-b49f-454c-a4ac-cabbc2c9be6a, 4ccd6c86-5d41-4a5a-b824-0811a085db96 result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h1.arthuredelstein.net:8901/?mode=write&secret=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h1.arthuredelstein.net:8901/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: ebe7674a-69fc-4832-9a56-02f8d56bc38f, 013e3f1e-4627-451f-972d-0ff7f47f2150, b26c59f9-2106-4da6-95dd-ce45a7772373, 9d2d77b8-6d0c-48d2-aa5e-8ed649b348b3, 4dcad743-499b-46d2-830c-b2293f944cf3 result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h1.arthuredelstein.net:8901/?mode=write&secret=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h1.arthuredelstein.net:8901/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: 558455ca-ab7c-47ad-9d13-14723a3aa1c1, 2be408e8-df66-4012-b22f-675070920520, 652282fe-6f8d-4dd5-8087-c12fb99176e4, 2ff00698-f72a-443c-8ce9-bd81acea95b4, d562eddf-0239-4f80-8bbd-589eb568277b result, different first party: 558455ca-ab7c-47ad-9d13-14723a3aa1c1, 2be408e8-df66-4012-b22f-675070920520, 652282fe-6f8d-4dd5-8087-c12fb99176e4, 2ff00698-f72a-443c-8ce9-bd81acea95b4, d562eddf-0239-4f80-8bbd-589eb568277b unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h1.arthuredelstein.net:8901/?mode=write&secret=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h1.arthuredelstein.net:8901/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: 4a360b5f-ba1a-4cea-a8da-89bab0ffdfa6, 7d1f0819-2c2d-4dc5-8e21-0a80e95b64ee, 42d88b90-7100-40f0-bce3-4d2dfe73ff7e, a7fdeceb-0e25-44a6-b6fe-a508d7aea5b4, b7bcaa48-54f7-4f55-97d8-de76f417e955 result, different first party: 4a360b5f-ba1a-4cea-a8da-89bab0ffdfa6, 7d1f0819-2c2d-4dc5-8e21-0a80e95b64ee, 42d88b90-7100-40f0-bce3-4d2dfe73ff7e, a7fdeceb-0e25-44a6-b6fe-a508d7aea5b4, b7bcaa48-54f7-4f55-97d8-de76f417e955 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h1.arthuredelstein.net:8901/?mode=write&secret=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h1.arthuredelstein.net:8901/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: 13632dad-100d-4bbb-82ad-1f6affef616f, 32b60130-451a-4964-8bf8-84317dcba86e, 629d90d9-fabe-46dc-bd67-58812eb88f88, 0872209d-9185-4713-b394-19833302c180, 4d956e34-e340-4716-a118-e56856183614 result, different first party: 13632dad-100d-4bbb-82ad-1f6affef616f, 32b60130-451a-4964-8bf8-84317dcba86e, 629d90d9-fabe-46dc-bd67-58812eb88f88, 0872209d-9185-4713-b394-19833302c180, 4d956e34-e340-4716-a118-e56856183614 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h1.arthuredelstein.net:8901/?mode=write&secret=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h1.arthuredelstein.net:8901/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: , , , , result, different first party: , , , , unsupported: false, false, false, false, false passed: undefined test failed: true, true, true, true, true
  write: async (secret) => { await fetch(`https://h1.arthuredelstein.net:8901/?mode=write&secret=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h1.arthuredelstein.net:8901/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: 23f319de-831d-495d-9b96-b346f764c5d3, 14f05b3b-1b00-4eca-b1a1-3a43391d920e, cbfe5b9c-1123-4c7a-956b-231d454acbb7, 34fdb1b1-c7f6-41ba-b0a2-4bdf0d06a240, 54029316-8ea8-4ad2-ac2d-eb50d7c981d1 result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h1.arthuredelstein.net:8901/?mode=write&secret=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h1.arthuredelstein.net:8901/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: 16aca853-50e8-41e1-91c9-42e6b447ea0b, 1568704e-d4cd-48d5-b274-7dbd8c8c7e6a, 8c99f84e-0733-442d-bd0b-254bce33169e, 04c4a7a5-6dbe-491a-9dd2-3c538978f963, 1ea5d0ae-570c-4e85-9731-0526e3a0df65 result, different first party: 16aca853-50e8-41e1-91c9-42e6b447ea0b, 1568704e-d4cd-48d5-b274-7dbd8c8c7e6a, 8c99f84e-0733-442d-bd0b-254bce33169e, 04c4a7a5-6dbe-491a-9dd2-3c538978f963, 1ea5d0ae-570c-4e85-9731-0526e3a0df65 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h1.arthuredelstein.net:8901/?mode=write&secret=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h1.arthuredelstein.net:8901/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: d8fc412f-e3c8-46d9-9b44-70894a3c88bb, 41db4977-d4e9-437a-b6af-7121adad1a4d, d31c2b39-daa4-4c14-ba87-3b9a574057b8, 8379e908-5f32-490f-a01a-8cf8ccc7b509, ed6cd199-8552-42ce-8392-72f28db90cba result, different first party: d8fc412f-e3c8-46d9-9b44-70894a3c88bb, 41db4977-d4e9-437a-b6af-7121adad1a4d, d31c2b39-daa4-4c14-ba87-3b9a574057b8, 8379e908-5f32-490f-a01a-8cf8ccc7b509, ed6cd199-8552-42ce-8392-72f28db90cba unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
H2 connectionHTTP/2 is a web connection protocol introduced in 2015. Some browsers re-use HTTP/2 connections across websites and can thus be used to track users.
  write: async (secret) => { await fetch(`https://h2.arthuredelstein.net:8902/?mode=write&secret=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h2.arthuredelstein.net:8902/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: c8e52af6-394e-4ba5-9e5a-768b2250c427, 7ac617e9-e2f8-488c-abe5-d4a86f2b2fba, 1404df63-2251-49f4-ac4c-bc952af1748f, 4b7501c2-9a6c-488c-b11a-6edd2d4d37f3, 99a93ab7-68c3-44c3-aff2-700393770f8b result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h2.arthuredelstein.net:8902/?mode=write&secret=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h2.arthuredelstein.net:8902/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: 57d15629-4e8d-4236-8122-bc2699441dbb, 3fe9d13e-8755-46d2-8429-9a36af9b8a31, 110c1a21-8b0b-43be-98a3-6d7c6a7adb89, 0ca631f0-0924-46d4-89f1-8dd753849fa8, fddbc41f-7369-4847-9396-2eb671e081df result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h2.arthuredelstein.net:8902/?mode=write&secret=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h2.arthuredelstein.net:8902/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: acecc55e-0c38-403f-b92d-5af30acf612a, 72dce12c-80c2-4d1e-9af7-33bb86e1d8fd, b8943e54-d369-4d25-81fc-d20916423114, b5035722-831b-4b8a-880b-19a0bdeb2c84, f376eedb-a883-4ac3-a7eb-2fe3769df4b3 result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h2.arthuredelstein.net:8902/?mode=write&secret=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h2.arthuredelstein.net:8902/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: d58a44ed-765a-4364-8e8b-0817e0eb5ec3, 40fdba78-111f-43a9-8130-7021b3c60588, ed706a23-1b69-4d50-aca6-e2c3bc9041d7, 73368ce6-aa14-4622-923a-3140abe918b2, f9c5a914-2f36-4d12-a42a-d6be57549389 result, different first party: d58a44ed-765a-4364-8e8b-0817e0eb5ec3, 40fdba78-111f-43a9-8130-7021b3c60588, ed706a23-1b69-4d50-aca6-e2c3bc9041d7, 73368ce6-aa14-4622-923a-3140abe918b2, f9c5a914-2f36-4d12-a42a-d6be57549389 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h2.arthuredelstein.net:8902/?mode=write&secret=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h2.arthuredelstein.net:8902/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: 6702f336-1bd3-4e33-873d-c1f1109ad894, f7e7c7c5-21ac-47fb-a266-328b23d6b756, 872e3eaf-3210-4a01-839a-3c9640f67be3, 68dd4f2a-3b55-4f8c-bc4d-d210ad8f8eba, c024f4c5-fce3-4914-972a-3e0f82988162 result, different first party: 6702f336-1bd3-4e33-873d-c1f1109ad894, f7e7c7c5-21ac-47fb-a266-328b23d6b756, 872e3eaf-3210-4a01-839a-3c9640f67be3, 68dd4f2a-3b55-4f8c-bc4d-d210ad8f8eba, c024f4c5-fce3-4914-972a-3e0f82988162 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h2.arthuredelstein.net:8902/?mode=write&secret=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h2.arthuredelstein.net:8902/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: 38112110-ef99-4c99-933e-5018bda96f19, c6fc3aed-cc47-4cd4-b3ee-7eee6a6b2fc3, a5900671-1da4-4e1d-8a89-73903ad421bd, 18f6f36e-46ef-499c-9f3f-1eb2c483bedf, 55321559-3ea6-4886-a631-20a5c7f6f4a4 result, different first party: 38112110-ef99-4c99-933e-5018bda96f19, c6fc3aed-cc47-4cd4-b3ee-7eee6a6b2fc3, a5900671-1da4-4e1d-8a89-73903ad421bd, 18f6f36e-46ef-499c-9f3f-1eb2c483bedf, 55321559-3ea6-4886-a631-20a5c7f6f4a4 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h2.arthuredelstein.net:8902/?mode=write&secret=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h2.arthuredelstein.net:8902/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: abb7f980-2429-45ef-a355-7b9ab2fa415d, 63b995d6-b03d-4156-adc1-584b20f54156, e6ecd287-76e9-40e9-9acb-87df470b20b5, 2d9429d1-ed1e-454a-82c6-4a458391bf58, 4293188b-bd29-46d7-a33a-88c16f95bdf4 result, different first party: abb7f980-2429-45ef-a355-7b9ab2fa415d, 63b995d6-b03d-4156-adc1-584b20f54156, e6ecd287-76e9-40e9-9acb-87df470b20b5, 2d9429d1-ed1e-454a-82c6-4a458391bf58, 4293188b-bd29-46d7-a33a-88c16f95bdf4 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h2.arthuredelstein.net:8902/?mode=write&secret=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h2.arthuredelstein.net:8902/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: dfaf0d3a-3df5-4e5f-ad7a-4034a16cc25d, da10a4d6-a0b9-4f1e-8c86-e2a23b3b06cc, 2b5b28f0-e24b-4562-a5cf-115f0794b2a1, 2b69dc75-b49f-454c-a4ac-cabbc2c9be6a, 4ccd6c86-5d41-4a5a-b824-0811a085db96 result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h2.arthuredelstein.net:8902/?mode=write&secret=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h2.arthuredelstein.net:8902/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: ebe7674a-69fc-4832-9a56-02f8d56bc38f, 013e3f1e-4627-451f-972d-0ff7f47f2150, b26c59f9-2106-4da6-95dd-ce45a7772373, 9d2d77b8-6d0c-48d2-aa5e-8ed649b348b3, 4dcad743-499b-46d2-830c-b2293f944cf3 result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h2.arthuredelstein.net:8902/?mode=write&secret=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h2.arthuredelstein.net:8902/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: 558455ca-ab7c-47ad-9d13-14723a3aa1c1, 2be408e8-df66-4012-b22f-675070920520, 652282fe-6f8d-4dd5-8087-c12fb99176e4, 2ff00698-f72a-443c-8ce9-bd81acea95b4, d562eddf-0239-4f80-8bbd-589eb568277b result, different first party: 558455ca-ab7c-47ad-9d13-14723a3aa1c1, 2be408e8-df66-4012-b22f-675070920520, 652282fe-6f8d-4dd5-8087-c12fb99176e4, 2ff00698-f72a-443c-8ce9-bd81acea95b4, d562eddf-0239-4f80-8bbd-589eb568277b unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h2.arthuredelstein.net:8902/?mode=write&secret=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h2.arthuredelstein.net:8902/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: 4a360b5f-ba1a-4cea-a8da-89bab0ffdfa6, 7d1f0819-2c2d-4dc5-8e21-0a80e95b64ee, 42d88b90-7100-40f0-bce3-4d2dfe73ff7e, a7fdeceb-0e25-44a6-b6fe-a508d7aea5b4, b7bcaa48-54f7-4f55-97d8-de76f417e955 result, different first party: 4a360b5f-ba1a-4cea-a8da-89bab0ffdfa6, 7d1f0819-2c2d-4dc5-8e21-0a80e95b64ee, 42d88b90-7100-40f0-bce3-4d2dfe73ff7e, a7fdeceb-0e25-44a6-b6fe-a508d7aea5b4, b7bcaa48-54f7-4f55-97d8-de76f417e955 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h2.arthuredelstein.net:8902/?mode=write&secret=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h2.arthuredelstein.net:8902/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: 13632dad-100d-4bbb-82ad-1f6affef616f, 32b60130-451a-4964-8bf8-84317dcba86e, 629d90d9-fabe-46dc-bd67-58812eb88f88, 0872209d-9185-4713-b394-19833302c180, 4d956e34-e340-4716-a118-e56856183614 result, different first party: 13632dad-100d-4bbb-82ad-1f6affef616f, 32b60130-451a-4964-8bf8-84317dcba86e, 629d90d9-fabe-46dc-bd67-58812eb88f88, 0872209d-9185-4713-b394-19833302c180, 4d956e34-e340-4716-a118-e56856183614 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h2.arthuredelstein.net:8902/?mode=write&secret=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h2.arthuredelstein.net:8902/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: , , , , result, different first party: , , , , unsupported: false, false, false, false, false passed: undefined test failed: true, true, true, true, true
  write: async (secret) => { await fetch(`https://h2.arthuredelstein.net:8902/?mode=write&secret=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h2.arthuredelstein.net:8902/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: 23f319de-831d-495d-9b96-b346f764c5d3, 14f05b3b-1b00-4eca-b1a1-3a43391d920e, cbfe5b9c-1123-4c7a-956b-231d454acbb7, 34fdb1b1-c7f6-41ba-b0a2-4bdf0d06a240, 54029316-8ea8-4ad2-ac2d-eb50d7c981d1 result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h2.arthuredelstein.net:8902/?mode=write&secret=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h2.arthuredelstein.net:8902/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: 16aca853-50e8-41e1-91c9-42e6b447ea0b, 1568704e-d4cd-48d5-b274-7dbd8c8c7e6a, 8c99f84e-0733-442d-bd0b-254bce33169e, 04c4a7a5-6dbe-491a-9dd2-3c538978f963, 1ea5d0ae-570c-4e85-9731-0526e3a0df65 result, different first party: 16aca853-50e8-41e1-91c9-42e6b447ea0b, 1568704e-d4cd-48d5-b274-7dbd8c8c7e6a, 8c99f84e-0733-442d-bd0b-254bce33169e, 04c4a7a5-6dbe-491a-9dd2-3c538978f963, 1ea5d0ae-570c-4e85-9731-0526e3a0df65 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h2.arthuredelstein.net:8902/?mode=write&secret=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h2.arthuredelstein.net:8902/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: d8fc412f-e3c8-46d9-9b44-70894a3c88bb, 41db4977-d4e9-437a-b6af-7121adad1a4d, d31c2b39-daa4-4c14-ba87-3b9a574057b8, 8379e908-5f32-490f-a01a-8cf8ccc7b509, ed6cd199-8552-42ce-8392-72f28db90cba result, different first party: d8fc412f-e3c8-46d9-9b44-70894a3c88bb, 41db4977-d4e9-437a-b6af-7121adad1a4d, d31c2b39-daa4-4c14-ba87-3b9a574057b8, 8379e908-5f32-490f-a01a-8cf8ccc7b509, ed6cd199-8552-42ce-8392-72f28db90cba unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
H3 connectionHTTP/3 is a new standard HTTP connection protocol, still in draft but widely supported by browsers. If it is not partitioned, it can be used to track users across websites.
  write: async (secret) => { // Ensure that we can switch over to h3 via alt-svc: for (let i = 0; i<3; ++i) { await fetch(`https://h3.arthuredelstein.net:4433/connection_id`, {cache: "no-store"}); await sleepMs(500); } // Are we now connecting over h3? let response = await fetch(`https://h3.arthuredelstein.net:4433/connection_id`, {cache: "no-store"}); let text = await response.text(); // Empty response text indicates we are not connecting over h3: if (text.trim() === "") { throw new Error("Unsupported"); } } read: async () => { let response = await fetch(`https://h3.arthuredelstein.net:4433/connection_id`); return await response.text(); } result, same first party: 8f82d5f5dc1af014170030ea09a453e6, bbd15996f9e240f5781a24eb17ce3ec0, f1542ade8e843264ad9f146c5dd0697b, f0a709c6cc3faff221b81e9eb2df8904, f55d2463725f045a015a8c6f91d70aca result, different first party: 2626be9e885de4bd8fbc7f31578abb86, 2c9212d9152bd58095523ca72efc7065, af9afc364ab47a51d8eb970777846be5, ebc3cadd11ad9e59664cae541ad9b9df, caf734d401d055d00a3fd160a11c7c85 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (secret) => { // Ensure that we can switch over to h3 via alt-svc: for (let i = 0; i<3; ++i) { await fetch(`https://h3.arthuredelstein.net:4433/connection_id`, {cache: "no-store"}); await sleepMs(500); } // Are we now connecting over h3? let response = await fetch(`https://h3.arthuredelstein.net:4433/connection_id`, {cache: "no-store"}); let text = await response.text(); // Empty response text indicates we are not connecting over h3: if (text.trim() === "") { throw new Error("Unsupported"); } } read: async () => { let response = await fetch(`https://h3.arthuredelstein.net:4433/connection_id`); return await response.text(); } result, same first party: 9ee3dee9f4552e44f76e0279ebdf2eb5, 8ec7779e1114b882966352d88d064d5b, c6bde24b8e6bdf2c17b61f1eecd1f484, a91e0b09a87aec03cb354bf91e694097, 0679adcf1aee23be81ca3922b1403633 result, different first party: b587ad4be651895d2fed58ecf37b1d34, 752ff7f26f16586f4ca62ee13ebbe77a, 4d639b0dc4edc2bf2faf2522f88926dd, a3f7719bd0e323f9712ca8bac33ebb34, 891e9cbda61e26a43f1697b882f15246 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
write: async (secret) => { // Ensure that we can switch over to h3 via alt-svc: for (let i = 0; i<3; ++i) { await fetch(`https://h3.arthuredelstein.net:4433/connection_id`, {cache: "no-store"}); await sleepMs(500); } // Are we now connecting over h3? let response = await fetch(`https://h3.arthuredelstein.net:4433/connection_id`, {cache: "no-store"}); let text = await response.text(); // Empty response text indicates we are not connecting over h3: if (text.trim() === "") { throw new Error("Unsupported"); } } read: async () => { let response = await fetch(`https://h3.arthuredelstein.net:4433/connection_id`); return await response.text(); } result, same first party: , , , , result, different first party: , , , , unsupported: true, true, true, true, true passed: undefined test failed: false, false, false, false, false
  write: async (secret) => { // Ensure that we can switch over to h3 via alt-svc: for (let i = 0; i<3; ++i) { await fetch(`https://h3.arthuredelstein.net:4433/connection_id`, {cache: "no-store"}); await sleepMs(500); } // Are we now connecting over h3? let response = await fetch(`https://h3.arthuredelstein.net:4433/connection_id`, {cache: "no-store"}); let text = await response.text(); // Empty response text indicates we are not connecting over h3: if (text.trim() === "") { throw new Error("Unsupported"); } } read: async () => { let response = await fetch(`https://h3.arthuredelstein.net:4433/connection_id`); return await response.text(); } result, same first party: 77f462f60ed1f998cfd981accdfd4ea8, af9e108b112af5325a7aa056fe3fa6ef, d5c853104e33581022e0d46828802fa4, bc1a77092427df5e0bae9a3b0c3427dd, d34ee8405f4c47878937e1a6e16c974f result, different first party: 77f462f60ed1f998cfd981accdfd4ea8, af9e108b112af5325a7aa056fe3fa6ef, d5c853104e33581022e0d46828802fa4, bc1a77092427df5e0bae9a3b0c3427dd, d34ee8405f4c47878937e1a6e16c974f unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (secret) => { // Ensure that we can switch over to h3 via alt-svc: for (let i = 0; i<3; ++i) { await fetch(`https://h3.arthuredelstein.net:4433/connection_id`, {cache: "no-store"}); await sleepMs(500); } // Are we now connecting over h3? let response = await fetch(`https://h3.arthuredelstein.net:4433/connection_id`, {cache: "no-store"}); let text = await response.text(); // Empty response text indicates we are not connecting over h3: if (text.trim() === "") { throw new Error("Unsupported"); } } read: async () => { let response = await fetch(`https://h3.arthuredelstein.net:4433/connection_id`); return await response.text(); } result, same first party: 4bd4afe583e372837d98b71da2d89b47, 390c1d6a8b7c938b8b0898c48e46ab13, aa1077702d1404b9e025b3273fdd8cd0, fd1a0ed1c0d3e40975e05bb829a6704e, efd48341507d7866317342ae2249496f result, different first party: 4bd4afe583e372837d98b71da2d89b47, 390c1d6a8b7c938b8b0898c48e46ab13, aa1077702d1404b9e025b3273fdd8cd0, fd1a0ed1c0d3e40975e05bb829a6704e, efd48341507d7866317342ae2249496f unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (secret) => { // Ensure that we can switch over to h3 via alt-svc: for (let i = 0; i<3; ++i) { await fetch(`https://h3.arthuredelstein.net:4433/connection_id`, {cache: "no-store"}); await sleepMs(500); } // Are we now connecting over h3? let response = await fetch(`https://h3.arthuredelstein.net:4433/connection_id`, {cache: "no-store"}); let text = await response.text(); // Empty response text indicates we are not connecting over h3: if (text.trim() === "") { throw new Error("Unsupported"); } } read: async () => { let response = await fetch(`https://h3.arthuredelstein.net:4433/connection_id`); return await response.text(); } result, same first party: 295b2cd1297a17345faa5b5e88f015e6, 148b2107c0d412b4a4bce52dfa7d9725, 0366d4e4600788308ef0b8d92c7ba4d4, 7068a773c2a8d5909cc9847da38d3981, 54549bb625882b294908d6128ffc1b5f result, different first party: 295b2cd1297a17345faa5b5e88f015e6, 148b2107c0d412b4a4bce52dfa7d9725, 0366d4e4600788308ef0b8d92c7ba4d4, 7068a773c2a8d5909cc9847da38d3981, 54549bb625882b294908d6128ffc1b5f unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (secret) => { // Ensure that we can switch over to h3 via alt-svc: for (let i = 0; i<3; ++i) { await fetch(`https://h3.arthuredelstein.net:4433/connection_id`, {cache: "no-store"}); await sleepMs(500); } // Are we now connecting over h3? let response = await fetch(`https://h3.arthuredelstein.net:4433/connection_id`, {cache: "no-store"}); let text = await response.text(); // Empty response text indicates we are not connecting over h3: if (text.trim() === "") { throw new Error("Unsupported"); } } read: async () => { let response = await fetch(`https://h3.arthuredelstein.net:4433/connection_id`); return await response.text(); } result, same first party: c0422794e9f2f6043871ca4e7ab2cb3f, cf3703e237733b4e595af1db7df18193, e9dd5b5eb7bc63fb4a9de0e9d9d7b02c, dc42ea41fd4a8fd3e7c5e987d0b1c0b5, 0732347675d35290cece3163e9fd55f2 result, different first party: c0422794e9f2f6043871ca4e7ab2cb3f, cf3703e237733b4e595af1db7df18193, e9dd5b5eb7bc63fb4a9de0e9d9d7b02c, dc42ea41fd4a8fd3e7c5e987d0b1c0b5, 0732347675d35290cece3163e9fd55f2 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (secret) => { // Ensure that we can switch over to h3 via alt-svc: for (let i = 0; i<3; ++i) { await fetch(`https://h3.arthuredelstein.net:4433/connection_id`, {cache: "no-store"}); await sleepMs(500); } // Are we now connecting over h3? let response = await fetch(`https://h3.arthuredelstein.net:4433/connection_id`, {cache: "no-store"}); let text = await response.text(); // Empty response text indicates we are not connecting over h3: if (text.trim() === "") { throw new Error("Unsupported"); } } read: async () => { let response = await fetch(`https://h3.arthuredelstein.net:4433/connection_id`); return await response.text(); } result, same first party: 0a412e04ee7dedab909a93b7efe3187a, db577ac732e988be0ee03d5064709fd3, be01fe96aa70242badc0e4997ab298e4, 417ec577ac55856f9b747d1ad879df16, 4270e8d5ba1c9c668a883593f8ce3ec7 result, different first party: c7167b28307de6c8d6478b8b053486e4, b298f30deb09642fe6c34846c5f4417f, f47061a9fe5c6f8312d1d9021b710e5d, 51d56fc122efa4a0e28459123c73a32c, e950b352e3e7b4f796808a7a6666dcaa unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (secret) => { // Ensure that we can switch over to h3 via alt-svc: for (let i = 0; i<3; ++i) { await fetch(`https://h3.arthuredelstein.net:4433/connection_id`, {cache: "no-store"}); await sleepMs(500); } // Are we now connecting over h3? let response = await fetch(`https://h3.arthuredelstein.net:4433/connection_id`, {cache: "no-store"}); let text = await response.text(); // Empty response text indicates we are not connecting over h3: if (text.trim() === "") { throw new Error("Unsupported"); } } read: async () => { let response = await fetch(`https://h3.arthuredelstein.net:4433/connection_id`); return await response.text(); } result, same first party: 6ce74d68c82b95d62e0cb15c6657bf92, 006dfce63c0df09e96e62cf544303abd, dcd6243f19919e6537c22949f08c4e99, 30dca6f25718cd598c74d244b12227cb, 91cfaedb67691d9afd04805d881d7cf6 result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (secret) => { // Ensure that we can switch over to h3 via alt-svc: for (let i = 0; i<3; ++i) { await fetch(`https://h3.arthuredelstein.net:4433/connection_id`, {cache: "no-store"}); await sleepMs(500); } // Are we now connecting over h3? let response = await fetch(`https://h3.arthuredelstein.net:4433/connection_id`, {cache: "no-store"}); let text = await response.text(); // Empty response text indicates we are not connecting over h3: if (text.trim() === "") { throw new Error("Unsupported"); } } read: async () => { let response = await fetch(`https://h3.arthuredelstein.net:4433/connection_id`); return await response.text(); } result, same first party: eb9c94ffe462049071d5a240e8a53a03, 43701d337df061ab015b86fb2e9ea408, a7a3fece3da15d314a21760820b35512, a04561d5ee4b43e26c3a4450fb9d9c0a, 52551317fde0184397f951f51defc4f1 result, different first party: eb9c94ffe462049071d5a240e8a53a03, 43701d337df061ab015b86fb2e9ea408, a7a3fece3da15d314a21760820b35512, a04561d5ee4b43e26c3a4450fb9d9c0a, 52551317fde0184397f951f51defc4f1 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (secret) => { // Ensure that we can switch over to h3 via alt-svc: for (let i = 0; i<3; ++i) { await fetch(`https://h3.arthuredelstein.net:4433/connection_id`, {cache: "no-store"}); await sleepMs(500); } // Are we now connecting over h3? let response = await fetch(`https://h3.arthuredelstein.net:4433/connection_id`, {cache: "no-store"}); let text = await response.text(); // Empty response text indicates we are not connecting over h3: if (text.trim() === "") { throw new Error("Unsupported"); } } read: async () => { let response = await fetch(`https://h3.arthuredelstein.net:4433/connection_id`); return await response.text(); } result, same first party: 6f16a5758cd038a18ce707a0f2a07771, 70eeab68a7784d642dafae1426032814, 0644224d8a2903094cf9f8e382e58771, 0ec2d35584cb73ffb5c5f4c9de438bde, 97e2addc2719d977689e990b7ccc5912 result, different first party: 6f16a5758cd038a18ce707a0f2a07771, 70eeab68a7784d642dafae1426032814, 0644224d8a2903094cf9f8e382e58771, 0ec2d35584cb73ffb5c5f4c9de438bde, 97e2addc2719d977689e990b7ccc5912 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
write: async (secret) => { // Ensure that we can switch over to h3 via alt-svc: for (let i = 0; i<3; ++i) { await fetch(`https://h3.arthuredelstein.net:4433/connection_id`, {cache: "no-store"}); await sleepMs(500); } // Are we now connecting over h3? let response = await fetch(`https://h3.arthuredelstein.net:4433/connection_id`, {cache: "no-store"}); let text = await response.text(); // Empty response text indicates we are not connecting over h3: if (text.trim() === "") { throw new Error("Unsupported"); } } read: async () => { let response = await fetch(`https://h3.arthuredelstein.net:4433/connection_id`); return await response.text(); } result, same first party: , , , , result, different first party: , , , , unsupported: true, true, true, true, true passed: undefined test failed: false, false, false, false, false
write: async (secret) => { // Ensure that we can switch over to h3 via alt-svc: for (let i = 0; i<3; ++i) { await fetch(`https://h3.arthuredelstein.net:4433/connection_id`, {cache: "no-store"}); await sleepMs(500); } // Are we now connecting over h3? let response = await fetch(`https://h3.arthuredelstein.net:4433/connection_id`, {cache: "no-store"}); let text = await response.text(); // Empty response text indicates we are not connecting over h3: if (text.trim() === "") { throw new Error("Unsupported"); } } read: async () => { let response = await fetch(`https://h3.arthuredelstein.net:4433/connection_id`); return await response.text(); } result, same first party: , , , , result, different first party: , , , , unsupported: true, true, true, true, true passed: undefined test failed: false, false, false, false, false
write: async (secret) => { // Ensure that we can switch over to h3 via alt-svc: for (let i = 0; i<3; ++i) { await fetch(`https://h3.arthuredelstein.net:4433/connection_id`, {cache: "no-store"}); await sleepMs(500); } // Are we now connecting over h3? let response = await fetch(`https://h3.arthuredelstein.net:4433/connection_id`, {cache: "no-store"}); let text = await response.text(); // Empty response text indicates we are not connecting over h3: if (text.trim() === "") { throw new Error("Unsupported"); } } read: async () => { let response = await fetch(`https://h3.arthuredelstein.net:4433/connection_id`); return await response.text(); } result, same first party: , , , , result, different first party: , , , , unsupported: true, true, true, true, true passed: undefined test failed: false, false, false, false, false
  write: async (secret) => { // Ensure that we can switch over to h3 via alt-svc: for (let i = 0; i<3; ++i) { await fetch(`https://h3.arthuredelstein.net:4433/connection_id`, {cache: "no-store"}); await sleepMs(500); } // Are we now connecting over h3? let response = await fetch(`https://h3.arthuredelstein.net:4433/connection_id`, {cache: "no-store"}); let text = await response.text(); // Empty response text indicates we are not connecting over h3: if (text.trim() === "") { throw new Error("Unsupported"); } } read: async () => { let response = await fetch(`https://h3.arthuredelstein.net:4433/connection_id`); return await response.text(); } result, same first party: 40d37de97b9a89c11f2448cdb244f4b0, 3377c47031dd6a11af68d9f9be7ba1e6, 9b619ad0b17f8934c6f42991fb2f45f8, df3368c61e9cc11bd15c96ecf35b0b69, b6b3a70e77da731123ef6d15450f476a result, different first party: 40d37de97b9a89c11f2448cdb244f4b0, 3377c47031dd6a11af68d9f9be7ba1e6, 9b619ad0b17f8934c6f42991fb2f45f8, df3368c61e9cc11bd15c96ecf35b0b69, b6b3a70e77da731123ef6d15450f476a unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (secret) => { // Ensure that we can switch over to h3 via alt-svc: for (let i = 0; i<3; ++i) { await fetch(`https://h3.arthuredelstein.net:4433/connection_id`, {cache: "no-store"}); await sleepMs(500); } // Are we now connecting over h3? let response = await fetch(`https://h3.arthuredelstein.net:4433/connection_id`, {cache: "no-store"}); let text = await response.text(); // Empty response text indicates we are not connecting over h3: if (text.trim() === "") { throw new Error("Unsupported"); } } read: async () => { let response = await fetch(`https://h3.arthuredelstein.net:4433/connection_id`); return await response.text(); } result, same first party: 0fbce8bb793cabf0f46557ae4ba1155a, 0e1548f4571084fc1cf51ffcc40e7c14, a0327babaaf7efd01d5120e9941275b4, 25d675277ea23a31e191a60938b870dc, 3192854e1c862eb5106490d99e94a361 result, different first party: 0fbce8bb793cabf0f46557ae4ba1155a, 0e1548f4571084fc1cf51ffcc40e7c14, a0327babaaf7efd01d5120e9941275b4, 25d675277ea23a31e191a60938b870dc, 3192854e1c862eb5106490d99e94a361 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
HSTS cacheThe HTTP Strict-Transport-Security response header allows a website to signal that it should only be accessed via HTTPS. The browser remembers this directive in a database, but if this database is not partitioned, then it can be used to track users across websites.
  write: () => { let image = document.getElementById("hsts-image"); image.src = "https://hsts.arthuredelstein.net/set_hsts.png"; } read: () => new Promise((resolve, reject) => { let image = document.getElementById("hsts-image"); image.onload = () => resolve("image load succeeded"); image.onerror = () => reject(new Error("image load failed")); image.src = "http://hsts.arthuredelstein.net/test_hsts.png"; }) result, same first party: image load succeeded, image load succeeded, image load succeeded, image load succeeded, image load succeeded result, different first party: image load succeeded, image load succeeded, image load succeeded, image load succeeded, image load succeeded unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: () => { let image = document.getElementById("hsts-image"); image.src = "https://hsts.arthuredelstein.net/set_hsts.png"; } read: () => new Promise((resolve, reject) => { let image = document.getElementById("hsts-image"); image.onload = () => resolve("image load succeeded"); image.onerror = () => reject(new Error("image load failed")); image.src = "http://hsts.arthuredelstein.net/test_hsts.png"; }) result, same first party: image load succeeded, image load succeeded, image load succeeded, image load succeeded, image load succeeded result, different first party: image load succeeded, image load succeeded, image load succeeded, image load succeeded, image load succeeded unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: () => { let image = document.getElementById("hsts-image"); image.src = "https://hsts.arthuredelstein.net/set_hsts.png"; } read: () => new Promise((resolve, reject) => { let image = document.getElementById("hsts-image"); image.onload = () => resolve("image load succeeded"); image.onerror = () => reject(new Error("image load failed")); image.src = "http://hsts.arthuredelstein.net/test_hsts.png"; }) result, same first party: image load succeeded, image load succeeded, image load succeeded, image load succeeded, image load succeeded result, different first party: image load succeeded, image load succeeded, image load succeeded, image load succeeded, image load succeeded unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: () => { let image = document.getElementById("hsts-image"); image.src = "https://hsts.arthuredelstein.net/set_hsts.png"; } read: () => new Promise((resolve, reject) => { let image = document.getElementById("hsts-image"); image.onload = () => resolve("image load succeeded"); image.onerror = () => reject(new Error("image load failed")); image.src = "http://hsts.arthuredelstein.net/test_hsts.png"; }) result, same first party: image load succeeded, image load succeeded, image load succeeded, image load succeeded, image load succeeded result, different first party: image load succeeded, image load succeeded, image load succeeded, image load succeeded, image load succeeded unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: () => { let image = document.getElementById("hsts-image"); image.src = "https://hsts.arthuredelstein.net/set_hsts.png"; } read: () => new Promise((resolve, reject) => { let image = document.getElementById("hsts-image"); image.onload = () => resolve("image load succeeded"); image.onerror = () => reject(new Error("image load failed")); image.src = "http://hsts.arthuredelstein.net/test_hsts.png"; }) result, same first party: image load succeeded, image load succeeded, image load succeeded, image load succeeded, image load succeeded result, different first party: image load succeeded, image load succeeded, image load succeeded, image load succeeded, image load succeeded unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: () => { let image = document.getElementById("hsts-image"); image.src = "https://hsts.arthuredelstein.net/set_hsts.png"; } read: () => new Promise((resolve, reject) => { let image = document.getElementById("hsts-image"); image.onload = () => resolve("image load succeeded"); image.onerror = () => reject(new Error("image load failed")); image.src = "http://hsts.arthuredelstein.net/test_hsts.png"; }) result, same first party: image load succeeded, image load succeeded, image load succeeded, image load succeeded, image load succeeded result, different first party: image load succeeded, image load succeeded, image load succeeded, image load succeeded, image load succeeded unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: () => { let image = document.getElementById("hsts-image"); image.src = "https://hsts.arthuredelstein.net/set_hsts.png"; } read: () => new Promise((resolve, reject) => { let image = document.getElementById("hsts-image"); image.onload = () => resolve("image load succeeded"); image.onerror = () => reject(new Error("image load failed")); image.src = "http://hsts.arthuredelstein.net/test_hsts.png"; }) result, same first party: image load succeeded, image load succeeded, image load succeeded, image load succeeded, image load succeeded result, different first party: image load succeeded, image load succeeded, image load succeeded, image load succeeded, image load succeeded unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: () => { let image = document.getElementById("hsts-image"); image.src = "https://hsts.arthuredelstein.net/set_hsts.png"; } read: () => new Promise((resolve, reject) => { let image = document.getElementById("hsts-image"); image.onload = () => resolve("image load succeeded"); image.onerror = () => reject(new Error("image load failed")); image.src = "http://hsts.arthuredelstein.net/test_hsts.png"; }) result, same first party: image load succeeded, image load succeeded, image load succeeded, image load succeeded, image load succeeded result, different first party: Error: image load failed, Error: image load failed, Error: image load failed, Error: image load failed, Error: image load failed unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: () => { let image = document.getElementById("hsts-image"); image.src = "https://hsts.arthuredelstein.net/set_hsts.png"; } read: () => new Promise((resolve, reject) => { let image = document.getElementById("hsts-image"); image.onload = () => resolve("image load succeeded"); image.onerror = () => reject(new Error("image load failed")); image.src = "http://hsts.arthuredelstein.net/test_hsts.png"; }) result, same first party: image load succeeded, image load succeeded, image load succeeded, image load succeeded, image load succeeded result, different first party: Error: image load failed, Error: image load failed, Error: image load failed, Error: image load failed, Error: image load failed unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: () => { let image = document.getElementById("hsts-image"); image.src = "https://hsts.arthuredelstein.net/set_hsts.png"; } read: () => new Promise((resolve, reject) => { let image = document.getElementById("hsts-image"); image.onload = () => resolve("image load succeeded"); image.onerror = () => reject(new Error("image load failed")); image.src = "http://hsts.arthuredelstein.net/test_hsts.png"; }) result, same first party: image load succeeded, image load succeeded, image load succeeded, image load succeeded, image load succeeded result, different first party: image load succeeded, image load succeeded, image load succeeded, image load succeeded, image load succeeded unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: () => { let image = document.getElementById("hsts-image"); image.src = "https://hsts.arthuredelstein.net/set_hsts.png"; } read: () => new Promise((resolve, reject) => { let image = document.getElementById("hsts-image"); image.onload = () => resolve("image load succeeded"); image.onerror = () => reject(new Error("image load failed")); image.src = "http://hsts.arthuredelstein.net/test_hsts.png"; }) result, same first party: image load succeeded, image load succeeded, image load succeeded, image load succeeded, image load succeeded result, different first party: image load succeeded, image load succeeded, image load succeeded, image load succeeded, image load succeeded unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
write: () => { let image = document.getElementById("hsts-image"); image.src = "https://hsts.arthuredelstein.net/set_hsts.png"; } read: () => new Promise((resolve, reject) => { let image = document.getElementById("hsts-image"); image.onload = () => resolve("image load succeeded"); image.onerror = () => reject(new Error("image load failed")); image.src = "http://hsts.arthuredelstein.net/test_hsts.png"; }) result, same first party: Error: image load failed, Error: image load failed, Error: image load failed, Error: image load failed, Error: image load failed result, different first party: Error: image load failed, Error: image load failed, Error: image load failed, Error: image load failed, Error: image load failed unsupported: true, true, true, true, true passed: undefined test failed: false, false, false, false, false
write: () => { let image = document.getElementById("hsts-image"); image.src = "https://hsts.arthuredelstein.net/set_hsts.png"; } read: () => new Promise((resolve, reject) => { let image = document.getElementById("hsts-image"); image.onload = () => resolve("image load succeeded"); image.onerror = () => reject(new Error("image load failed")); image.src = "http://hsts.arthuredelstein.net/test_hsts.png"; }) result, same first party: Error: image load failed, Error: image load failed, Error: image load failed, Error: image load failed, Error: image load failed result, different first party: Error: image load failed, Error: image load failed, Error: image load failed, Error: image load failed, Error: image load failed unsupported: true, true, true, true, true passed: undefined test failed: false, false, false, false, false
write: () => { let image = document.getElementById("hsts-image"); image.src = "https://hsts.arthuredelstein.net/set_hsts.png"; } read: () => new Promise((resolve, reject) => { let image = document.getElementById("hsts-image"); image.onload = () => resolve("image load succeeded"); image.onerror = () => reject(new Error("image load failed")); image.src = "http://hsts.arthuredelstein.net/test_hsts.png"; }) result, same first party: Error: image load failed, Error: image load failed, Error: image load failed, Error: image load failed, Error: image load failed result, different first party: Error: image load failed, Error: image load failed, Error: image load failed, Error: image load failed, Error: image load failed unsupported: true, true, true, true, true passed: undefined test failed: false, false, false, false, false
  write: () => { let image = document.getElementById("hsts-image"); image.src = "https://hsts.arthuredelstein.net/set_hsts.png"; } read: () => new Promise((resolve, reject) => { let image = document.getElementById("hsts-image"); image.onload = () => resolve("image load succeeded"); image.onerror = () => reject(new Error("image load failed")); image.src = "http://hsts.arthuredelstein.net/test_hsts.png"; }) result, same first party: image load succeeded, image load succeeded, image load succeeded, image load succeeded, image load succeeded result, different first party: image load succeeded, image load succeeded, image load succeeded, image load succeeded, image load succeeded unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: () => { let image = document.getElementById("hsts-image"); image.src = "https://hsts.arthuredelstein.net/set_hsts.png"; } read: () => new Promise((resolve, reject) => { let image = document.getElementById("hsts-image"); image.onload = () => resolve("image load succeeded"); image.onerror = () => reject(new Error("image load failed")); image.src = "http://hsts.arthuredelstein.net/test_hsts.png"; }) result, same first party: image load succeeded, image load succeeded, image load succeeded, image load succeeded, image load succeeded result, different first party: image load succeeded, image load succeeded, image load succeeded, image load succeeded, image load succeeded unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
iframe cacheAn iframe is an element in a web page than allows websites to embed a second web page. Caching of this web page could be abused for cross-site tracking.
  write: (key) => new Promise((resolve, reject) => { let iframe = document.createElement("iframe"); document.body.appendChild(iframe); iframe.addEventListener("load", () => resolve(key), {once: true}); iframe.src = testURI("resource", "page", key); }) read: async (key) => { let iframe = document.createElement("iframe"); document.body.appendChild(iframe); let iframeLoadPromise = new Promise((resolve, reject) => { iframe.addEventListener("load", resolve, {once: true}); }); let address = testURI("resource", "page", key); iframe.src = address; await iframeLoadPromise; let response = await fetch( testURI("ctr", "page", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (key) => new Promise((resolve, reject) => { let iframe = document.createElement("iframe"); document.body.appendChild(iframe); iframe.addEventListener("load", () => resolve(key), {once: true}); iframe.src = testURI("resource", "page", key); }) read: async (key) => { let iframe = document.createElement("iframe"); document.body.appendChild(iframe); let iframeLoadPromise = new Promise((resolve, reject) => { iframe.addEventListener("load", resolve, {once: true}); }); let address = testURI("resource", "page", key); iframe.src = address; await iframeLoadPromise; let response = await fetch( testURI("ctr", "page", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (key) => new Promise((resolve, reject) => { let iframe = document.createElement("iframe"); document.body.appendChild(iframe); iframe.addEventListener("load", () => resolve(key), {once: true}); iframe.src = testURI("resource", "page", key); }) read: async (key) => { let iframe = document.createElement("iframe"); document.body.appendChild(iframe); let iframeLoadPromise = new Promise((resolve, reject) => { iframe.addEventListener("load", resolve, {once: true}); }); let address = testURI("resource", "page", key); iframe.src = address; await iframeLoadPromise; let response = await fetch( testURI("ctr", "page", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (key) => new Promise((resolve, reject) => { let iframe = document.createElement("iframe"); document.body.appendChild(iframe); iframe.addEventListener("load", () => resolve(key), {once: true}); iframe.src = testURI("resource", "page", key); }) read: async (key) => { let iframe = document.createElement("iframe"); document.body.appendChild(iframe); let iframeLoadPromise = new Promise((resolve, reject) => { iframe.addEventListener("load", resolve, {once: true}); }); let address = testURI("resource", "page", key); iframe.src = address; await iframeLoadPromise; let response = await fetch( testURI("ctr", "page", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (key) => new Promise((resolve, reject) => { let iframe = document.createElement("iframe"); document.body.appendChild(iframe); iframe.addEventListener("load", () => resolve(key), {once: true}); iframe.src = testURI("resource", "page", key); }) read: async (key) => { let iframe = document.createElement("iframe"); document.body.appendChild(iframe); let iframeLoadPromise = new Promise((resolve, reject) => { iframe.addEventListener("load", resolve, {once: true}); }); let address = testURI("resource", "page", key); iframe.src = address; await iframeLoadPromise; let response = await fetch( testURI("ctr", "page", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (key) => new Promise((resolve, reject) => { let iframe = document.createElement("iframe"); document.body.appendChild(iframe); iframe.addEventListener("load", () => resolve(key), {once: true}); iframe.src = testURI("resource", "page", key); }) read: async (key) => { let iframe = document.createElement("iframe"); document.body.appendChild(iframe); let iframeLoadPromise = new Promise((resolve, reject) => { iframe.addEventListener("load", resolve, {once: true}); }); let address = testURI("resource", "page", key); iframe.src = address; await iframeLoadPromise; let response = await fetch( testURI("ctr", "page", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (key) => new Promise((resolve, reject) => { let iframe = document.createElement("iframe"); document.body.appendChild(iframe); iframe.addEventListener("load", () => resolve(key), {once: true}); iframe.src = testURI("resource", "page", key); }) read: async (key) => { let iframe = document.createElement("iframe"); document.body.appendChild(iframe); let iframeLoadPromise = new Promise((resolve, reject) => { iframe.addEventListener("load", resolve, {once: true}); }); let address = testURI("resource", "page", key); iframe.src = address; await iframeLoadPromise; let response = await fetch( testURI("ctr", "page", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (key) => new Promise((resolve, reject) => { let iframe = document.createElement("iframe"); document.body.appendChild(iframe); iframe.addEventListener("load", () => resolve(key), {once: true}); iframe.src = testURI("resource", "page", key); }) read: async (key) => { let iframe = document.createElement("iframe"); document.body.appendChild(iframe); let iframeLoadPromise = new Promise((resolve, reject) => { iframe.addEventListener("load", resolve, {once: true}); }); let address = testURI("resource", "page", key); iframe.src = address; await iframeLoadPromise; let response = await fetch( testURI("ctr", "page", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (key) => new Promise((resolve, reject) => { let iframe = document.createElement("iframe"); document.body.appendChild(iframe); iframe.addEventListener("load", () => resolve(key), {once: true}); iframe.src = testURI("resource", "page", key); }) read: async (key) => { let iframe = document.createElement("iframe"); document.body.appendChild(iframe); let iframeLoadPromise = new Promise((resolve, reject) => { iframe.addEventListener("load", resolve, {once: true}); }); let address = testURI("resource", "page", key); iframe.src = address; await iframeLoadPromise; let response = await fetch( testURI("ctr", "page", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (key) => new Promise((resolve, reject) => { let iframe = document.createElement("iframe"); document.body.appendChild(iframe); iframe.addEventListener("load", () => resolve(key), {once: true}); iframe.src = testURI("resource", "page", key); }) read: async (key) => { let iframe = document.createElement("iframe"); document.body.appendChild(iframe); let iframeLoadPromise = new Promise((resolve, reject) => { iframe.addEventListener("load", resolve, {once: true}); }); let address = testURI("resource", "page", key); iframe.src = address; await iframeLoadPromise; let response = await fetch( testURI("ctr", "page", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (key) => new Promise((resolve, reject) => { let iframe = document.createElement("iframe"); document.body.appendChild(iframe); iframe.addEventListener("load", () => resolve(key), {once: true}); iframe.src = testURI("resource", "page", key); }) read: async (key) => { let iframe = document.createElement("iframe"); document.body.appendChild(iframe); let iframeLoadPromise = new Promise((resolve, reject) => { iframe.addEventListener("load", resolve, {once: true}); }); let address = testURI("resource", "page", key); iframe.src = address; await iframeLoadPromise; let response = await fetch( testURI("ctr", "page", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (key) => new Promise((resolve, reject) => { let iframe = document.createElement("iframe"); document.body.appendChild(iframe); iframe.addEventListener("load", () => resolve(key), {once: true}); iframe.src = testURI("resource", "page", key); }) read: async (key) => { let iframe = document.createElement("iframe"); document.body.appendChild(iframe); let iframeLoadPromise = new Promise((resolve, reject) => { iframe.addEventListener("load", resolve, {once: true}); }); let address = testURI("resource", "page", key); iframe.src = address; await iframeLoadPromise; let response = await fetch( testURI("ctr", "page", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (key) => new Promise((resolve, reject) => { let iframe = document.createElement("iframe"); document.body.appendChild(iframe); iframe.addEventListener("load", () => resolve(key), {once: true}); iframe.src = testURI("resource", "page", key); }) read: async (key) => { let iframe = document.createElement("iframe"); document.body.appendChild(iframe); let iframeLoadPromise = new Promise((resolve, reject) => { iframe.addEventListener("load", resolve, {once: true}); }); let address = testURI("resource", "page", key); iframe.src = address; await iframeLoadPromise; let response = await fetch( testURI("ctr", "page", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 2, 2, 2, 2, 2 result, different first party: 3, 3, 3, 3, 3 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (key) => new Promise((resolve, reject) => { let iframe = document.createElement("iframe"); document.body.appendChild(iframe); iframe.addEventListener("load", () => resolve(key), {once: true}); iframe.src = testURI("resource", "page", key); }) read: async (key) => { let iframe = document.createElement("iframe"); document.body.appendChild(iframe); let iframeLoadPromise = new Promise((resolve, reject) => { iframe.addEventListener("load", resolve, {once: true}); }); let address = testURI("resource", "page", key); iframe.src = address; await iframeLoadPromise; let response = await fetch( testURI("ctr", "page", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (key) => new Promise((resolve, reject) => { let iframe = document.createElement("iframe"); document.body.appendChild(iframe); iframe.addEventListener("load", () => resolve(key), {once: true}); iframe.src = testURI("resource", "page", key); }) read: async (key) => { let iframe = document.createElement("iframe"); document.body.appendChild(iframe); let iframeLoadPromise = new Promise((resolve, reject) => { iframe.addEventListener("load", resolve, {once: true}); }); let address = testURI("resource", "page", key); iframe.src = address; await iframeLoadPromise; let response = await fetch( testURI("ctr", "page", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (key) => new Promise((resolve, reject) => { let iframe = document.createElement("iframe"); document.body.appendChild(iframe); iframe.addEventListener("load", () => resolve(key), {once: true}); iframe.src = testURI("resource", "page", key); }) read: async (key) => { let iframe = document.createElement("iframe"); document.body.appendChild(iframe); let iframeLoadPromise = new Promise((resolve, reject) => { iframe.addEventListener("load", resolve, {once: true}); }); let address = testURI("resource", "page", key); iframe.src = address; await iframeLoadPromise; let response = await fetch( testURI("ctr", "page", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
image cacheCaching of images in web browsers is a standard behavior. But if that cache leaks between websites, it can be abused for cross-site tracking.
  write: (key) => new Promise((resolve, reject) => { let img = document.createElement("img"); document.body.appendChild(img); img.addEventListener("load", () => resolve(key), {once: true}); img.src = testURI("resource", "image", key); }) read: async (key) => { let img = document.createElement("img"); document.body.appendChild(img); let imgLoadPromise = new Promise((resolve, reject) => { img.addEventListener("load", resolve, {once: true}); }); img.src = testURI("resource", "image", key); await imgLoadPromise; let response = await fetch( testURI("ctr", "image", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (key) => new Promise((resolve, reject) => { let img = document.createElement("img"); document.body.appendChild(img); img.addEventListener("load", () => resolve(key), {once: true}); img.src = testURI("resource", "image", key); }) read: async (key) => { let img = document.createElement("img"); document.body.appendChild(img); let imgLoadPromise = new Promise((resolve, reject) => { img.addEventListener("load", resolve, {once: true}); }); img.src = testURI("resource", "image", key); await imgLoadPromise; let response = await fetch( testURI("ctr", "image", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 1, 1, 1, 1, 1 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (key) => new Promise((resolve, reject) => { let img = document.createElement("img"); document.body.appendChild(img); img.addEventListener("load", () => resolve(key), {once: true}); img.src = testURI("resource", "image", key); }) read: async (key) => { let img = document.createElement("img"); document.body.appendChild(img); let imgLoadPromise = new Promise((resolve, reject) => { img.addEventListener("load", resolve, {once: true}); }); img.src = testURI("resource", "image", key); await imgLoadPromise; let response = await fetch( testURI("ctr", "image", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 1, 1, 1, 1, 1 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (key) => new Promise((resolve, reject) => { let img = document.createElement("img"); document.body.appendChild(img); img.addEventListener("load", () => resolve(key), {once: true}); img.src = testURI("resource", "image", key); }) read: async (key) => { let img = document.createElement("img"); document.body.appendChild(img); let imgLoadPromise = new Promise((resolve, reject) => { img.addEventListener("load", resolve, {once: true}); }); img.src = testURI("resource", "image", key); await imgLoadPromise; let response = await fetch( testURI("ctr", "image", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 1, 1, 1, 1, 1 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (key) => new Promise((resolve, reject) => { let img = document.createElement("img"); document.body.appendChild(img); img.addEventListener("load", () => resolve(key), {once: true}); img.src = testURI("resource", "image", key); }) read: async (key) => { let img = document.createElement("img"); document.body.appendChild(img); let imgLoadPromise = new Promise((resolve, reject) => { img.addEventListener("load", resolve, {once: true}); }); img.src = testURI("resource", "image", key); await imgLoadPromise; let response = await fetch( testURI("ctr", "image", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 1, 1, 1, 1, 1 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (key) => new Promise((resolve, reject) => { let img = document.createElement("img"); document.body.appendChild(img); img.addEventListener("load", () => resolve(key), {once: true}); img.src = testURI("resource", "image", key); }) read: async (key) => { let img = document.createElement("img"); document.body.appendChild(img); let imgLoadPromise = new Promise((resolve, reject) => { img.addEventListener("load", resolve, {once: true}); }); img.src = testURI("resource", "image", key); await imgLoadPromise; let response = await fetch( testURI("ctr", "image", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 1, 1, 1, 1, 1 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (key) => new Promise((resolve, reject) => { let img = document.createElement("img"); document.body.appendChild(img); img.addEventListener("load", () => resolve(key), {once: true}); img.src = testURI("resource", "image", key); }) read: async (key) => { let img = document.createElement("img"); document.body.appendChild(img); let imgLoadPromise = new Promise((resolve, reject) => { img.addEventListener("load", resolve, {once: true}); }); img.src = testURI("resource", "image", key); await imgLoadPromise; let response = await fetch( testURI("ctr", "image", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 1, 1, 1, 1, 1 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (key) => new Promise((resolve, reject) => { let img = document.createElement("img"); document.body.appendChild(img); img.addEventListener("load", () => resolve(key), {once: true}); img.src = testURI("resource", "image", key); }) read: async (key) => { let img = document.createElement("img"); document.body.appendChild(img); let imgLoadPromise = new Promise((resolve, reject) => { img.addEventListener("load", resolve, {once: true}); }); img.src = testURI("resource", "image", key); await imgLoadPromise; let response = await fetch( testURI("ctr", "image", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (key) => new Promise((resolve, reject) => { let img = document.createElement("img"); document.body.appendChild(img); img.addEventListener("load", () => resolve(key), {once: true}); img.src = testURI("resource", "image", key); }) read: async (key) => { let img = document.createElement("img"); document.body.appendChild(img); let imgLoadPromise = new Promise((resolve, reject) => { img.addEventListener("load", resolve, {once: true}); }); img.src = testURI("resource", "image", key); await imgLoadPromise; let response = await fetch( testURI("ctr", "image", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (key) => new Promise((resolve, reject) => { let img = document.createElement("img"); document.body.appendChild(img); img.addEventListener("load", () => resolve(key), {once: true}); img.src = testURI("resource", "image", key); }) read: async (key) => { let img = document.createElement("img"); document.body.appendChild(img); let imgLoadPromise = new Promise((resolve, reject) => { img.addEventListener("load", resolve, {once: true}); }); img.src = testURI("resource", "image", key); await imgLoadPromise; let response = await fetch( testURI("ctr", "image", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 1, 1, 1, 1, 1 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (key) => new Promise((resolve, reject) => { let img = document.createElement("img"); document.body.appendChild(img); img.addEventListener("load", () => resolve(key), {once: true}); img.src = testURI("resource", "image", key); }) read: async (key) => { let img = document.createElement("img"); document.body.appendChild(img); let imgLoadPromise = new Promise((resolve, reject) => { img.addEventListener("load", resolve, {once: true}); }); img.src = testURI("resource", "image", key); await imgLoadPromise; let response = await fetch( testURI("ctr", "image", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 1, 1, 1, 1, 1 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (key) => new Promise((resolve, reject) => { let img = document.createElement("img"); document.body.appendChild(img); img.addEventListener("load", () => resolve(key), {once: true}); img.src = testURI("resource", "image", key); }) read: async (key) => { let img = document.createElement("img"); document.body.appendChild(img); let imgLoadPromise = new Promise((resolve, reject) => { img.addEventListener("load", resolve, {once: true}); }); img.src = testURI("resource", "image", key); await imgLoadPromise; let response = await fetch( testURI("ctr", "image", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (key) => new Promise((resolve, reject) => { let img = document.createElement("img"); document.body.appendChild(img); img.addEventListener("load", () => resolve(key), {once: true}); img.src = testURI("resource", "image", key); }) read: async (key) => { let img = document.createElement("img"); document.body.appendChild(img); let imgLoadPromise = new Promise((resolve, reject) => { img.addEventListener("load", resolve, {once: true}); }); img.src = testURI("resource", "image", key); await imgLoadPromise; let response = await fetch( testURI("ctr", "image", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 2, 2, 2, 2, 2 result, different first party: 3, 3, 3, 3, 3 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (key) => new Promise((resolve, reject) => { let img = document.createElement("img"); document.body.appendChild(img); img.addEventListener("load", () => resolve(key), {once: true}); img.src = testURI("resource", "image", key); }) read: async (key) => { let img = document.createElement("img"); document.body.appendChild(img); let imgLoadPromise = new Promise((resolve, reject) => { img.addEventListener("load", resolve, {once: true}); }); img.src = testURI("resource", "image", key); await imgLoadPromise; let response = await fetch( testURI("ctr", "image", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (key) => new Promise((resolve, reject) => { let img = document.createElement("img"); document.body.appendChild(img); img.addEventListener("load", () => resolve(key), {once: true}); img.src = testURI("resource", "image", key); }) read: async (key) => { let img = document.createElement("img"); document.body.appendChild(img); let imgLoadPromise = new Promise((resolve, reject) => { img.addEventListener("load", resolve, {once: true}); }); img.src = testURI("resource", "image", key); await imgLoadPromise; let response = await fetch( testURI("ctr", "image", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 1, 1, 1, 1, 1 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (key) => new Promise((resolve, reject) => { let img = document.createElement("img"); document.body.appendChild(img); img.addEventListener("load", () => resolve(key), {once: true}); img.src = testURI("resource", "image", key); }) read: async (key) => { let img = document.createElement("img"); document.body.appendChild(img); let imgLoadPromise = new Promise((resolve, reject) => { img.addEventListener("load", resolve, {once: true}); }); img.src = testURI("resource", "image", key); await imgLoadPromise; let response = await fetch( testURI("ctr", "image", key), {"cache": "reload"}); return (await response.text()).trim(); } result, same first party: 1, 1, 1, 1, 1 result, different first party: 1, 1, 1, 1, 1 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
indexedDBThe IndexedDB API exposes a transactional database to web pages. That database can be used to track users across websites, unless it is partitioned.
  write: async (secret) => { try { return await IdbKeyVal.set("secret", secret); } catch (e) { throw new Error("Unsupported"); } } read: () => IdbKeyVal.get("secret") result, same first party: c8e52af6-394e-4ba5-9e5a-768b2250c427, 7ac617e9-e2f8-488c-abe5-d4a86f2b2fba, 1404df63-2251-49f4-ac4c-bc952af1748f, 4b7501c2-9a6c-488c-b11a-6edd2d4d37f3, 99a93ab7-68c3-44c3-aff2-700393770f8b result, different first party: Error: The user denied permission to access the database., Error: The user denied permission to access the database., Error: The user denied permission to access the database., Error: The user denied permission to access the database., Error: The user denied permission to access the database. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (secret) => { try { return await IdbKeyVal.set("secret", secret); } catch (e) { throw new Error("Unsupported"); } } read: () => IdbKeyVal.get("secret") result, same first party: 57d15629-4e8d-4236-8122-bc2699441dbb, 3fe9d13e-8755-46d2-8429-9a36af9b8a31, 110c1a21-8b0b-43be-98a3-6d7c6a7adb89, 0ca631f0-0924-46d4-89f1-8dd753849fa8, fddbc41f-7369-4847-9396-2eb671e081df result, different first party: Error: The user denied permission to access the database., Error: The user denied permission to access the database., Error: The user denied permission to access the database., Error: The user denied permission to access the database., Error: The user denied permission to access the database. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (secret) => { try { return await IdbKeyVal.set("secret", secret); } catch (e) { throw new Error("Unsupported"); } } read: () => IdbKeyVal.get("secret") result, same first party: acecc55e-0c38-403f-b92d-5af30acf612a, 72dce12c-80c2-4d1e-9af7-33bb86e1d8fd, b8943e54-d369-4d25-81fc-d20916423114, b5035722-831b-4b8a-880b-19a0bdeb2c84, f376eedb-a883-4ac3-a7eb-2fe3769df4b3 result, different first party: Error: The user denied permission to access the database., Error: The user denied permission to access the database., Error: The user denied permission to access the database., Error: The user denied permission to access the database., Error: The user denied permission to access the database. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (secret) => { try { return await IdbKeyVal.set("secret", secret); } catch (e) { throw new Error("Unsupported"); } } read: () => IdbKeyVal.get("secret") result, same first party: d58a44ed-765a-4364-8e8b-0817e0eb5ec3, 40fdba78-111f-43a9-8130-7021b3c60588, ed706a23-1b69-4d50-aca6-e2c3bc9041d7, 73368ce6-aa14-4622-923a-3140abe918b2, f9c5a914-2f36-4d12-a42a-d6be57549389 result, different first party: d58a44ed-765a-4364-8e8b-0817e0eb5ec3, 40fdba78-111f-43a9-8130-7021b3c60588, ed706a23-1b69-4d50-aca6-e2c3bc9041d7, 73368ce6-aa14-4622-923a-3140abe918b2, f9c5a914-2f36-4d12-a42a-d6be57549389 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (secret) => { try { return await IdbKeyVal.set("secret", secret); } catch (e) { throw new Error("Unsupported"); } } read: () => IdbKeyVal.get("secret") result, same first party: 6702f336-1bd3-4e33-873d-c1f1109ad894, f7e7c7c5-21ac-47fb-a266-328b23d6b756, 872e3eaf-3210-4a01-839a-3c9640f67be3, 68dd4f2a-3b55-4f8c-bc4d-d210ad8f8eba, c024f4c5-fce3-4914-972a-3e0f82988162 result, different first party: Error: The user denied permission to access the database., Error: The user denied permission to access the database., Error: The user denied permission to access the database., Error: The user denied permission to access the database., Error: The user denied permission to access the database. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (secret) => { try { return await IdbKeyVal.set("secret", secret); } catch (e) { throw new Error("Unsupported"); } } read: () => IdbKeyVal.get("secret") result, same first party: 38112110-ef99-4c99-933e-5018bda96f19, c6fc3aed-cc47-4cd4-b3ee-7eee6a6b2fc3, a5900671-1da4-4e1d-8a89-73903ad421bd, 18f6f36e-46ef-499c-9f3f-1eb2c483bedf, 55321559-3ea6-4886-a631-20a5c7f6f4a4 result, different first party: 38112110-ef99-4c99-933e-5018bda96f19, c6fc3aed-cc47-4cd4-b3ee-7eee6a6b2fc3, a5900671-1da4-4e1d-8a89-73903ad421bd, 18f6f36e-46ef-499c-9f3f-1eb2c483bedf, 55321559-3ea6-4886-a631-20a5c7f6f4a4 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (secret) => { try { return await IdbKeyVal.set("secret", secret); } catch (e) { throw new Error("Unsupported"); } } read: () => IdbKeyVal.get("secret") result, same first party: abb7f980-2429-45ef-a355-7b9ab2fa415d, 63b995d6-b03d-4156-adc1-584b20f54156, e6ecd287-76e9-40e9-9acb-87df470b20b5, 2d9429d1-ed1e-454a-82c6-4a458391bf58, 4293188b-bd29-46d7-a33a-88c16f95bdf4 result, different first party: abb7f980-2429-45ef-a355-7b9ab2fa415d, 63b995d6-b03d-4156-adc1-584b20f54156, e6ecd287-76e9-40e9-9acb-87df470b20b5, 2d9429d1-ed1e-454a-82c6-4a458391bf58, 4293188b-bd29-46d7-a33a-88c16f95bdf4 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (secret) => { try { return await IdbKeyVal.set("secret", secret); } catch (e) { throw new Error("Unsupported"); } } read: () => IdbKeyVal.get("secret") result, same first party: dfaf0d3a-3df5-4e5f-ad7a-4034a16cc25d, da10a4d6-a0b9-4f1e-8c86-e2a23b3b06cc, 2b5b28f0-e24b-4562-a5cf-115f0794b2a1, 2b69dc75-b49f-454c-a4ac-cabbc2c9be6a, 4ccd6c86-5d41-4a5a-b824-0811a085db96 result, different first party: dfaf0d3a-3df5-4e5f-ad7a-4034a16cc25d, da10a4d6-a0b9-4f1e-8c86-e2a23b3b06cc, 2b5b28f0-e24b-4562-a5cf-115f0794b2a1, 2b69dc75-b49f-454c-a4ac-cabbc2c9be6a, 4ccd6c86-5d41-4a5a-b824-0811a085db96 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
write: async (secret) => { try { return await IdbKeyVal.set("secret", secret); } catch (e) { throw new Error("Unsupported"); } } read: () => IdbKeyVal.get("secret") result, same first party: Error: A mutation operation was attempted on a database that did not allow mutations., Error: A mutation operation was attempted on a database that did not allow mutations., Error: A mutation operation was attempted on a database that did not allow mutations., Error: A mutation operation was attempted on a database that did not allow mutations., Error: A mutation operation was attempted on a database that did not allow mutations. result, different first party: Error: A mutation operation was attempted on a database that did not allow mutations., Error: A mutation operation was attempted on a database that did not allow mutations., Error: A mutation operation was attempted on a database that did not allow mutations., Error: A mutation operation was attempted on a database that did not allow mutations., Error: A mutation operation was attempted on a database that did not allow mutations. unsupported: true, true, true, true, true passed: undefined test failed: false, false, false, false, false
  write: async (secret) => { try { return await IdbKeyVal.set("secret", secret); } catch (e) { throw new Error("Unsupported"); } } read: () => IdbKeyVal.get("secret") result, same first party: 558455ca-ab7c-47ad-9d13-14723a3aa1c1, 2be408e8-df66-4012-b22f-675070920520, 652282fe-6f8d-4dd5-8087-c12fb99176e4, 2ff00698-f72a-443c-8ce9-bd81acea95b4, d562eddf-0239-4f80-8bbd-589eb568277b result, different first party: 558455ca-ab7c-47ad-9d13-14723a3aa1c1, 2be408e8-df66-4012-b22f-675070920520, 652282fe-6f8d-4dd5-8087-c12fb99176e4, 2ff00698-f72a-443c-8ce9-bd81acea95b4, d562eddf-0239-4f80-8bbd-589eb568277b unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (secret) => { try { return await IdbKeyVal.set("secret", secret); } catch (e) { throw new Error("Unsupported"); } } read: () => IdbKeyVal.get("secret") result, same first party: 4a360b5f-ba1a-4cea-a8da-89bab0ffdfa6, 7d1f0819-2c2d-4dc5-8e21-0a80e95b64ee, 42d88b90-7100-40f0-bce3-4d2dfe73ff7e, a7fdeceb-0e25-44a6-b6fe-a508d7aea5b4, b7bcaa48-54f7-4f55-97d8-de76f417e955 result, different first party: Error: The user denied permission to access the database., Error: The user denied permission to access the database., Error: The user denied permission to access the database., Error: The user denied permission to access the database., Error: The user denied permission to access the database. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (secret) => { try { return await IdbKeyVal.set("secret", secret); } catch (e) { throw new Error("Unsupported"); } } read: () => IdbKeyVal.get("secret") result, same first party: 13632dad-100d-4bbb-82ad-1f6affef616f, 32b60130-451a-4964-8bf8-84317dcba86e, 629d90d9-fabe-46dc-bd67-58812eb88f88, 0872209d-9185-4713-b394-19833302c180, 4d956e34-e340-4716-a118-e56856183614 result, different first party: undefined unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (secret) => { try { return await IdbKeyVal.set("secret", secret); } catch (e) { throw new Error("Unsupported"); } } read: () => IdbKeyVal.get("secret") result, same first party: undefined result, different first party: undefined unsupported: false, false, false, false, false passed: undefined test failed: true, true, true, true, true
write: async (secret) => { try { return await IdbKeyVal.set("secret", secret); } catch (e) { throw new Error("Unsupported"); } } read: () => IdbKeyVal.get("secret") result, same first party: Error: A mutation operation was attempted on a database that did not allow mutations., Error: A mutation operation was attempted on a database that did not allow mutations., Error: A mutation operation was attempted on a database that did not allow mutations., Error: A mutation operation was attempted on a database that did not allow mutations., Error: A mutation operation was attempted on a database that did not allow mutations. result, different first party: Error: A mutation operation was attempted on a database that did not allow mutations., Error: A mutation operation was attempted on a database that did not allow mutations., Error: A mutation operation was attempted on a database that did not allow mutations., Error: A mutation operation was attempted on a database that did not allow mutations., Error: A mutation operation was attempted on a database that did not allow mutations. unsupported: true, true, true, true, true passed: undefined test failed: false, false, false, false, false
  write: async (secret) => { try { return await IdbKeyVal.set("secret", secret); } catch (e) { throw new Error("Unsupported"); } } read: () => IdbKeyVal.get("secret") result, same first party: 16aca853-50e8-41e1-91c9-42e6b447ea0b, 1568704e-d4cd-48d5-b274-7dbd8c8c7e6a, 8c99f84e-0733-442d-bd0b-254bce33169e, 04c4a7a5-6dbe-491a-9dd2-3c538978f963, 1ea5d0ae-570c-4e85-9731-0526e3a0df65 result, different first party: 16aca853-50e8-41e1-91c9-42e6b447ea0b, 1568704e-d4cd-48d5-b274-7dbd8c8c7e6a, 8c99f84e-0733-442d-bd0b-254bce33169e, 04c4a7a5-6dbe-491a-9dd2-3c538978f963, 1ea5d0ae-570c-4e85-9731-0526e3a0df65 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (secret) => { try { return await IdbKeyVal.set("secret", secret); } catch (e) { throw new Error("Unsupported"); } } read: () => IdbKeyVal.get("secret") result, same first party: d8fc412f-e3c8-46d9-9b44-70894a3c88bb, 41db4977-d4e9-437a-b6af-7121adad1a4d, d31c2b39-daa4-4c14-ba87-3b9a574057b8, 8379e908-5f32-490f-a01a-8cf8ccc7b509, ed6cd199-8552-42ce-8392-72f28db90cba result, different first party: Error: The user denied permission to access the database., Error: The user denied permission to access the database., Error: The user denied permission to access the database., Error: The user denied permission to access the database., Error: The user denied permission to access the database. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
localStorageThe localStorage API gives websites access to a key-value database that will remain available across visits. If the localStorage API is not partitioned or blocked, it can also be used to track users across websites.
  write: (secret) => localStorage.setItem("secret", secret) read: () => localStorage.getItem("secret") result, same first party: c8e52af6-394e-4ba5-9e5a-768b2250c427, 7ac617e9-e2f8-488c-abe5-d4a86f2b2fba, 1404df63-2251-49f4-ac4c-bc952af1748f, 4b7501c2-9a6c-488c-b11a-6edd2d4d37f3, 99a93ab7-68c3-44c3-aff2-700393770f8b result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => localStorage.setItem("secret", secret) read: () => localStorage.getItem("secret") result, same first party: 57d15629-4e8d-4236-8122-bc2699441dbb, 3fe9d13e-8755-46d2-8429-9a36af9b8a31, 110c1a21-8b0b-43be-98a3-6d7c6a7adb89, 0ca631f0-0924-46d4-89f1-8dd753849fa8, fddbc41f-7369-4847-9396-2eb671e081df result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => localStorage.setItem("secret", secret) read: () => localStorage.getItem("secret") result, same first party: acecc55e-0c38-403f-b92d-5af30acf612a, 72dce12c-80c2-4d1e-9af7-33bb86e1d8fd, b8943e54-d369-4d25-81fc-d20916423114, b5035722-831b-4b8a-880b-19a0bdeb2c84, f376eedb-a883-4ac3-a7eb-2fe3769df4b3 result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => localStorage.setItem("secret", secret) read: () => localStorage.getItem("secret") result, same first party: d58a44ed-765a-4364-8e8b-0817e0eb5ec3, 40fdba78-111f-43a9-8130-7021b3c60588, ed706a23-1b69-4d50-aca6-e2c3bc9041d7, 73368ce6-aa14-4622-923a-3140abe918b2, f9c5a914-2f36-4d12-a42a-d6be57549389 result, different first party: d58a44ed-765a-4364-8e8b-0817e0eb5ec3, 40fdba78-111f-43a9-8130-7021b3c60588, ed706a23-1b69-4d50-aca6-e2c3bc9041d7, 73368ce6-aa14-4622-923a-3140abe918b2, f9c5a914-2f36-4d12-a42a-d6be57549389 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => localStorage.setItem("secret", secret) read: () => localStorage.getItem("secret") result, same first party: 6702f336-1bd3-4e33-873d-c1f1109ad894, f7e7c7c5-21ac-47fb-a266-328b23d6b756, 872e3eaf-3210-4a01-839a-3c9640f67be3, 68dd4f2a-3b55-4f8c-bc4d-d210ad8f8eba, c024f4c5-fce3-4914-972a-3e0f82988162 result, different first party: Error: Failed to read the 'localStorage' property from 'Window': Access is denied for this document., Error: Failed to read the 'localStorage' property from 'Window': Access is denied for this document., Error: Failed to read the 'localStorage' property from 'Window': Access is denied for this document., Error: Failed to read the 'localStorage' property from 'Window': Access is denied for this document., Error: Failed to read the 'localStorage' property from 'Window': Access is denied for this document. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => localStorage.setItem("secret", secret) read: () => localStorage.getItem("secret") result, same first party: 38112110-ef99-4c99-933e-5018bda96f19, c6fc3aed-cc47-4cd4-b3ee-7eee6a6b2fc3, a5900671-1da4-4e1d-8a89-73903ad421bd, 18f6f36e-46ef-499c-9f3f-1eb2c483bedf, 55321559-3ea6-4886-a631-20a5c7f6f4a4 result, different first party: 38112110-ef99-4c99-933e-5018bda96f19, c6fc3aed-cc47-4cd4-b3ee-7eee6a6b2fc3, a5900671-1da4-4e1d-8a89-73903ad421bd, 18f6f36e-46ef-499c-9f3f-1eb2c483bedf, 55321559-3ea6-4886-a631-20a5c7f6f4a4 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => localStorage.setItem("secret", secret) read: () => localStorage.getItem("secret") result, same first party: abb7f980-2429-45ef-a355-7b9ab2fa415d, 63b995d6-b03d-4156-adc1-584b20f54156, e6ecd287-76e9-40e9-9acb-87df470b20b5, 2d9429d1-ed1e-454a-82c6-4a458391bf58, 4293188b-bd29-46d7-a33a-88c16f95bdf4 result, different first party: abb7f980-2429-45ef-a355-7b9ab2fa415d, 63b995d6-b03d-4156-adc1-584b20f54156, e6ecd287-76e9-40e9-9acb-87df470b20b5, 2d9429d1-ed1e-454a-82c6-4a458391bf58, 4293188b-bd29-46d7-a33a-88c16f95bdf4 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => localStorage.setItem("secret", secret) read: () => localStorage.getItem("secret") result, same first party: dfaf0d3a-3df5-4e5f-ad7a-4034a16cc25d, da10a4d6-a0b9-4f1e-8c86-e2a23b3b06cc, 2b5b28f0-e24b-4562-a5cf-115f0794b2a1, 2b69dc75-b49f-454c-a4ac-cabbc2c9be6a, 4ccd6c86-5d41-4a5a-b824-0811a085db96 result, different first party: dfaf0d3a-3df5-4e5f-ad7a-4034a16cc25d, da10a4d6-a0b9-4f1e-8c86-e2a23b3b06cc, 2b5b28f0-e24b-4562-a5cf-115f0794b2a1, 2b69dc75-b49f-454c-a4ac-cabbc2c9be6a, 4ccd6c86-5d41-4a5a-b824-0811a085db96 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => localStorage.setItem("secret", secret) read: () => localStorage.getItem("secret") result, same first party: ebe7674a-69fc-4832-9a56-02f8d56bc38f, 013e3f1e-4627-451f-972d-0ff7f47f2150, b26c59f9-2106-4da6-95dd-ce45a7772373, 9d2d77b8-6d0c-48d2-aa5e-8ed649b348b3, 4dcad743-499b-46d2-830c-b2293f944cf3 result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => localStorage.setItem("secret", secret) read: () => localStorage.getItem("secret") result, same first party: 558455ca-ab7c-47ad-9d13-14723a3aa1c1, 2be408e8-df66-4012-b22f-675070920520, 652282fe-6f8d-4dd5-8087-c12fb99176e4, 2ff00698-f72a-443c-8ce9-bd81acea95b4, d562eddf-0239-4f80-8bbd-589eb568277b result, different first party: 558455ca-ab7c-47ad-9d13-14723a3aa1c1, 2be408e8-df66-4012-b22f-675070920520, 652282fe-6f8d-4dd5-8087-c12fb99176e4, 2ff00698-f72a-443c-8ce9-bd81acea95b4, d562eddf-0239-4f80-8bbd-589eb568277b unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => localStorage.setItem("secret", secret) read: () => localStorage.getItem("secret") result, same first party: 4a360b5f-ba1a-4cea-a8da-89bab0ffdfa6, 7d1f0819-2c2d-4dc5-8e21-0a80e95b64ee, 42d88b90-7100-40f0-bce3-4d2dfe73ff7e, a7fdeceb-0e25-44a6-b6fe-a508d7aea5b4, b7bcaa48-54f7-4f55-97d8-de76f417e955 result, different first party: Error: Failed to read the 'localStorage' property from 'Window': Access is denied for this document., Error: Failed to read the 'localStorage' property from 'Window': Access is denied for this document., Error: Failed to read the 'localStorage' property from 'Window': Access is denied for this document., Error: Failed to read the 'localStorage' property from 'Window': Access is denied for this document., Error: Failed to read the 'localStorage' property from 'Window': Access is denied for this document. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => localStorage.setItem("secret", secret) read: () => localStorage.getItem("secret") result, same first party: 13632dad-100d-4bbb-82ad-1f6affef616f, 32b60130-451a-4964-8bf8-84317dcba86e, 629d90d9-fabe-46dc-bd67-58812eb88f88, 0872209d-9185-4713-b394-19833302c180, 4d956e34-e340-4716-a118-e56856183614 result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => localStorage.setItem("secret", secret) read: () => localStorage.getItem("secret") result, same first party: , , , , result, different first party: , , , , unsupported: false, false, false, false, false passed: undefined test failed: true, true, true, true, true
  write: (secret) => localStorage.setItem("secret", secret) read: () => localStorage.getItem("secret") result, same first party: 23f319de-831d-495d-9b96-b346f764c5d3, 14f05b3b-1b00-4eca-b1a1-3a43391d920e, cbfe5b9c-1123-4c7a-956b-231d454acbb7, 34fdb1b1-c7f6-41ba-b0a2-4bdf0d06a240, 54029316-8ea8-4ad2-ac2d-eb50d7c981d1 result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => localStorage.setItem("secret", secret) read: () => localStorage.getItem("secret") result, same first party: 16aca853-50e8-41e1-91c9-42e6b447ea0b, 1568704e-d4cd-48d5-b274-7dbd8c8c7e6a, 8c99f84e-0733-442d-bd0b-254bce33169e, 04c4a7a5-6dbe-491a-9dd2-3c538978f963, 1ea5d0ae-570c-4e85-9731-0526e3a0df65 result, different first party: 16aca853-50e8-41e1-91c9-42e6b447ea0b, 1568704e-d4cd-48d5-b274-7dbd8c8c7e6a, 8c99f84e-0733-442d-bd0b-254bce33169e, 04c4a7a5-6dbe-491a-9dd2-3c538978f963, 1ea5d0ae-570c-4e85-9731-0526e3a0df65 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => localStorage.setItem("secret", secret) read: () => localStorage.getItem("secret") result, same first party: d8fc412f-e3c8-46d9-9b44-70894a3c88bb, 41db4977-d4e9-437a-b6af-7121adad1a4d, d31c2b39-daa4-4c14-ba87-3b9a574057b8, 8379e908-5f32-490f-a01a-8cf8ccc7b509, ed6cd199-8552-42ce-8392-72f28db90cba result, different first party: Error: Failed to read the 'localStorage' property from 'Window': Access is denied for this document., Error: Failed to read the 'localStorage' property from 'Window': Access is denied for this document., Error: Failed to read the 'localStorage' property from 'Window': Access is denied for this document., Error: Failed to read the 'localStorage' property from 'Window': Access is denied for this document., Error: Failed to read the 'localStorage' property from 'Window': Access is denied for this document. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
locksnavigator.locks (only supported in some browsers) allows scripts on multiple tabs to coordinate. If this API is not partitioned, it can be used for cross-site tracking.
  write: async (key) => { if (navigator.locks) { navigator.locks.request(key, lock => new Promise((f,r) => {})); let queryResult = await navigator.locks.query(); return queryResult.held[0].clientId; } else { throw new Error("Unsupported"); } } read: async () => { if (navigator.locks) { let queryResult = await navigator.locks.query(); return queryResult.held[0].name; } } result, same first party: c8e52af6-394e-4ba5-9e5a-768b2250c427, 7ac617e9-e2f8-488c-abe5-d4a86f2b2fba, 1404df63-2251-49f4-ac4c-bc952af1748f, 4b7501c2-9a6c-488c-b11a-6edd2d4d37f3, 99a93ab7-68c3-44c3-aff2-700393770f8b result, different first party: Error: Failed to execute 'query' on 'LockManager': Access to the Locks API is denied in this context., Error: Failed to execute 'query' on 'LockManager': Access to the Locks API is denied in this context., Error: Failed to execute 'query' on 'LockManager': Access to the Locks API is denied in this context., Error: Failed to execute 'query' on 'LockManager': Access to the Locks API is denied in this context., Error: Failed to execute 'query' on 'LockManager': Access to the Locks API is denied in this context. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { if (navigator.locks) { navigator.locks.request(key, lock => new Promise((f,r) => {})); let queryResult = await navigator.locks.query(); return queryResult.held[0].clientId; } else { throw new Error("Unsupported"); } } read: async () => { if (navigator.locks) { let queryResult = await navigator.locks.query(); return queryResult.held[0].name; } } result, same first party: 57d15629-4e8d-4236-8122-bc2699441dbb, 3fe9d13e-8755-46d2-8429-9a36af9b8a31, 110c1a21-8b0b-43be-98a3-6d7c6a7adb89, 0ca631f0-0924-46d4-89f1-8dd753849fa8, fddbc41f-7369-4847-9396-2eb671e081df result, different first party: Error: Failed to execute 'query' on 'LockManager': Access to the Locks API is denied in this context., Error: Failed to execute 'query' on 'LockManager': Access to the Locks API is denied in this context., Error: Failed to execute 'query' on 'LockManager': Access to the Locks API is denied in this context., Error: Failed to execute 'query' on 'LockManager': Access to the Locks API is denied in this context., Error: Failed to execute 'query' on 'LockManager': Access to the Locks API is denied in this context. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { if (navigator.locks) { navigator.locks.request(key, lock => new Promise((f,r) => {})); let queryResult = await navigator.locks.query(); return queryResult.held[0].clientId; } else { throw new Error("Unsupported"); } } read: async () => { if (navigator.locks) { let queryResult = await navigator.locks.query(); return queryResult.held[0].name; } } result, same first party: acecc55e-0c38-403f-b92d-5af30acf612a, 72dce12c-80c2-4d1e-9af7-33bb86e1d8fd, b8943e54-d369-4d25-81fc-d20916423114, b5035722-831b-4b8a-880b-19a0bdeb2c84, f376eedb-a883-4ac3-a7eb-2fe3769df4b3 result, different first party: Error: Failed to execute 'query' on 'LockManager': Access to the Locks API is denied in this context., Error: Failed to execute 'query' on 'LockManager': Access to the Locks API is denied in this context., Error: Failed to execute 'query' on 'LockManager': Access to the Locks API is denied in this context., Error: Failed to execute 'query' on 'LockManager': Access to the Locks API is denied in this context., Error: Failed to execute 'query' on 'LockManager': Access to the Locks API is denied in this context. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { if (navigator.locks) { navigator.locks.request(key, lock => new Promise((f,r) => {})); let queryResult = await navigator.locks.query(); return queryResult.held[0].clientId; } else { throw new Error("Unsupported"); } } read: async () => { if (navigator.locks) { let queryResult = await navigator.locks.query(); return queryResult.held[0].name; } } result, same first party: d58a44ed-765a-4364-8e8b-0817e0eb5ec3, 40fdba78-111f-43a9-8130-7021b3c60588, ed706a23-1b69-4d50-aca6-e2c3bc9041d7, 73368ce6-aa14-4622-923a-3140abe918b2, f9c5a914-2f36-4d12-a42a-d6be57549389 result, different first party: d58a44ed-765a-4364-8e8b-0817e0eb5ec3, 40fdba78-111f-43a9-8130-7021b3c60588, ed706a23-1b69-4d50-aca6-e2c3bc9041d7, 73368ce6-aa14-4622-923a-3140abe918b2, f9c5a914-2f36-4d12-a42a-d6be57549389 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { if (navigator.locks) { navigator.locks.request(key, lock => new Promise((f,r) => {})); let queryResult = await navigator.locks.query(); return queryResult.held[0].clientId; } else { throw new Error("Unsupported"); } } read: async () => { if (navigator.locks) { let queryResult = await navigator.locks.query(); return queryResult.held[0].name; } } result, same first party: 6702f336-1bd3-4e33-873d-c1f1109ad894, f7e7c7c5-21ac-47fb-a266-328b23d6b756, 872e3eaf-3210-4a01-839a-3c9640f67be3, 68dd4f2a-3b55-4f8c-bc4d-d210ad8f8eba, c024f4c5-fce3-4914-972a-3e0f82988162 result, different first party: Error: Failed to execute 'query' on 'LockManager': Access to the Locks API is denied in this context., Error: Failed to execute 'query' on 'LockManager': Access to the Locks API is denied in this context., Error: Failed to execute 'query' on 'LockManager': Access to the Locks API is denied in this context., Error: Failed to execute 'query' on 'LockManager': Access to the Locks API is denied in this context., Error: Failed to execute 'query' on 'LockManager': Access to the Locks API is denied in this context. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { if (navigator.locks) { navigator.locks.request(key, lock => new Promise((f,r) => {})); let queryResult = await navigator.locks.query(); return queryResult.held[0].clientId; } else { throw new Error("Unsupported"); } } read: async () => { if (navigator.locks) { let queryResult = await navigator.locks.query(); return queryResult.held[0].name; } } result, same first party: 38112110-ef99-4c99-933e-5018bda96f19, c6fc3aed-cc47-4cd4-b3ee-7eee6a6b2fc3, a5900671-1da4-4e1d-8a89-73903ad421bd, 18f6f36e-46ef-499c-9f3f-1eb2c483bedf, 55321559-3ea6-4886-a631-20a5c7f6f4a4 result, different first party: 38112110-ef99-4c99-933e-5018bda96f19, c6fc3aed-cc47-4cd4-b3ee-7eee6a6b2fc3, a5900671-1da4-4e1d-8a89-73903ad421bd, 18f6f36e-46ef-499c-9f3f-1eb2c483bedf, 55321559-3ea6-4886-a631-20a5c7f6f4a4 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { if (navigator.locks) { navigator.locks.request(key, lock => new Promise((f,r) => {})); let queryResult = await navigator.locks.query(); return queryResult.held[0].clientId; } else { throw new Error("Unsupported"); } } read: async () => { if (navigator.locks) { let queryResult = await navigator.locks.query(); return queryResult.held[0].name; } } result, same first party: abb7f980-2429-45ef-a355-7b9ab2fa415d, 63b995d6-b03d-4156-adc1-584b20f54156, e6ecd287-76e9-40e9-9acb-87df470b20b5, 2d9429d1-ed1e-454a-82c6-4a458391bf58, 4293188b-bd29-46d7-a33a-88c16f95bdf4 result, different first party: abb7f980-2429-45ef-a355-7b9ab2fa415d, 63b995d6-b03d-4156-adc1-584b20f54156, e6ecd287-76e9-40e9-9acb-87df470b20b5, 2d9429d1-ed1e-454a-82c6-4a458391bf58, 4293188b-bd29-46d7-a33a-88c16f95bdf4 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
write: async (key) => { if (navigator.locks) { navigator.locks.request(key, lock => new Promise((f,r) => {})); let queryResult = await navigator.locks.query(); return queryResult.held[0].clientId; } else { throw new Error("Unsupported"); } } read: async () => { if (navigator.locks) { let queryResult = await navigator.locks.query(); return queryResult.held[0].name; } } result, same first party: undefined result, different first party: undefined unsupported: true, true, true, true, true passed: undefined test failed: false, false, false, false, false
write: async (key) => { if (navigator.locks) { navigator.locks.request(key, lock => new Promise((f,r) => {})); let queryResult = await navigator.locks.query(); return queryResult.held[0].clientId; } else { throw new Error("Unsupported"); } } read: async () => { if (navigator.locks) { let queryResult = await navigator.locks.query(); return queryResult.held[0].name; } } result, same first party: undefined result, different first party: undefined unsupported: true, true, true, true, true passed: undefined test failed: false, false, false, false, false
  write: async (key) => { if (navigator.locks) { navigator.locks.request(key, lock => new Promise((f,r) => {})); let queryResult = await navigator.locks.query(); return queryResult.held[0].clientId; } else { throw new Error("Unsupported"); } } read: async () => { if (navigator.locks) { let queryResult = await navigator.locks.query(); return queryResult.held[0].name; } } result, same first party: 558455ca-ab7c-47ad-9d13-14723a3aa1c1, 2be408e8-df66-4012-b22f-675070920520, 652282fe-6f8d-4dd5-8087-c12fb99176e4, 2ff00698-f72a-443c-8ce9-bd81acea95b4, d562eddf-0239-4f80-8bbd-589eb568277b result, different first party: 558455ca-ab7c-47ad-9d13-14723a3aa1c1, 2be408e8-df66-4012-b22f-675070920520, 652282fe-6f8d-4dd5-8087-c12fb99176e4, 2ff00698-f72a-443c-8ce9-bd81acea95b4, d562eddf-0239-4f80-8bbd-589eb568277b unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { if (navigator.locks) { navigator.locks.request(key, lock => new Promise((f,r) => {})); let queryResult = await navigator.locks.query(); return queryResult.held[0].clientId; } else { throw new Error("Unsupported"); } } read: async () => { if (navigator.locks) { let queryResult = await navigator.locks.query(); return queryResult.held[0].name; } } result, same first party: 4a360b5f-ba1a-4cea-a8da-89bab0ffdfa6, 7d1f0819-2c2d-4dc5-8e21-0a80e95b64ee, 42d88b90-7100-40f0-bce3-4d2dfe73ff7e, a7fdeceb-0e25-44a6-b6fe-a508d7aea5b4, b7bcaa48-54f7-4f55-97d8-de76f417e955 result, different first party: Error: Failed to execute 'query' on 'LockManager': Access to the Locks API is denied in this context., Error: Failed to execute 'query' on 'LockManager': Access to the Locks API is denied in this context., Error: Failed to execute 'query' on 'LockManager': Access to the Locks API is denied in this context., Error: Failed to execute 'query' on 'LockManager': Access to the Locks API is denied in this context., Error: Failed to execute 'query' on 'LockManager': Access to the Locks API is denied in this context. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
write: async (key) => { if (navigator.locks) { navigator.locks.request(key, lock => new Promise((f,r) => {})); let queryResult = await navigator.locks.query(); return queryResult.held[0].clientId; } else { throw new Error("Unsupported"); } } read: async () => { if (navigator.locks) { let queryResult = await navigator.locks.query(); return queryResult.held[0].name; } } result, same first party: undefined result, different first party: undefined unsupported: true, true, true, true, true passed: undefined test failed: false, false, false, false, false
write: async (key) => { if (navigator.locks) { navigator.locks.request(key, lock => new Promise((f,r) => {})); let queryResult = await navigator.locks.query(); return queryResult.held[0].clientId; } else { throw new Error("Unsupported"); } } read: async () => { if (navigator.locks) { let queryResult = await navigator.locks.query(); return queryResult.held[0].name; } } result, same first party: undefined result, different first party: undefined unsupported: true, true, true, true, true passed: undefined test failed: false, false, false, false, false
write: async (key) => { if (navigator.locks) { navigator.locks.request(key, lock => new Promise((f,r) => {})); let queryResult = await navigator.locks.query(); return queryResult.held[0].clientId; } else { throw new Error("Unsupported"); } } read: async () => { if (navigator.locks) { let queryResult = await navigator.locks.query(); return queryResult.held[0].name; } } result, same first party: undefined result, different first party: undefined unsupported: true, true, true, true, true passed: undefined test failed: false, false, false, false, false
  write: async (key) => { if (navigator.locks) { navigator.locks.request(key, lock => new Promise((f,r) => {})); let queryResult = await navigator.locks.query(); return queryResult.held[0].clientId; } else { throw new Error("Unsupported"); } } read: async () => { if (navigator.locks) { let queryResult = await navigator.locks.query(); return queryResult.held[0].name; } } result, same first party: 16aca853-50e8-41e1-91c9-42e6b447ea0b, 1568704e-d4cd-48d5-b274-7dbd8c8c7e6a, 8c99f84e-0733-442d-bd0b-254bce33169e, 04c4a7a5-6dbe-491a-9dd2-3c538978f963, 1ea5d0ae-570c-4e85-9731-0526e3a0df65 result, different first party: 16aca853-50e8-41e1-91c9-42e6b447ea0b, 1568704e-d4cd-48d5-b274-7dbd8c8c7e6a, 8c99f84e-0733-442d-bd0b-254bce33169e, 04c4a7a5-6dbe-491a-9dd2-3c538978f963, 1ea5d0ae-570c-4e85-9731-0526e3a0df65 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { if (navigator.locks) { navigator.locks.request(key, lock => new Promise((f,r) => {})); let queryResult = await navigator.locks.query(); return queryResult.held[0].clientId; } else { throw new Error("Unsupported"); } } read: async () => { if (navigator.locks) { let queryResult = await navigator.locks.query(); return queryResult.held[0].name; } } result, same first party: d8fc412f-e3c8-46d9-9b44-70894a3c88bb, 41db4977-d4e9-437a-b6af-7121adad1a4d, d31c2b39-daa4-4c14-ba87-3b9a574057b8, 8379e908-5f32-490f-a01a-8cf8ccc7b509, ed6cd199-8552-42ce-8392-72f28db90cba result, different first party: Error: Failed to execute 'query' on 'LockManager': Access to the Locks API is denied in this context., Error: Failed to execute 'query' on 'LockManager': Access to the Locks API is denied in this context., Error: Failed to execute 'query' on 'LockManager': Access to the Locks API is denied in this context., Error: Failed to execute 'query' on 'LockManager': Access to the Locks API is denied in this context., Error: Failed to execute 'query' on 'LockManager': Access to the Locks API is denied in this context. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
prefetch cacheA suggests to browsers they should fetch a resource ahead of time and cache it. But if browsers don't partition this cache, it can be used to track users across websites.
  write: async (key) => { let link = document.createElement("link"); link.rel = "prefetch"; link.href = testURI("resource", "prefetch", key); document.getElementsByTagName("head")[0].appendChild(link); return key; } read: async (key) => { let link = document.createElement("link"); link.rel = "prefetch"; link.href = testURI("resource", "prefetch", key); document.getElementsByTagName("head")[0].appendChild(link); await sleepMs(500); let response = await fetch( testURI("ctr", "prefetch", key), {"cache": "reload"}); let countString = (await response.text()).trim(); if (parseInt(countString) === 0) { throw new Error("No requests received"); } return countString; } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { let link = document.createElement("link"); link.rel = "prefetch"; link.href = testURI("resource", "prefetch", key); document.getElementsByTagName("head")[0].appendChild(link); return key; } read: async (key) => { let link = document.createElement("link"); link.rel = "prefetch"; link.href = testURI("resource", "prefetch", key); document.getElementsByTagName("head")[0].appendChild(link); await sleepMs(500); let response = await fetch( testURI("ctr", "prefetch", key), {"cache": "reload"}); let countString = (await response.text()).trim(); if (parseInt(countString) === 0) { throw new Error("No requests received"); } return countString; } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { let link = document.createElement("link"); link.rel = "prefetch"; link.href = testURI("resource", "prefetch", key); document.getElementsByTagName("head")[0].appendChild(link); return key; } read: async (key) => { let link = document.createElement("link"); link.rel = "prefetch"; link.href = testURI("resource", "prefetch", key); document.getElementsByTagName("head")[0].appendChild(link); await sleepMs(500); let response = await fetch( testURI("ctr", "prefetch", key), {"cache": "reload"}); let countString = (await response.text()).trim(); if (parseInt(countString) === 0) { throw new Error("No requests received"); } return countString; } result, same first party: 1, 1, 1, 1, 1 result, different first party: 1, 1, 1, 1, 1 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { let link = document.createElement("link"); link.rel = "prefetch"; link.href = testURI("resource", "prefetch", key); document.getElementsByTagName("head")[0].appendChild(link); return key; } read: async (key) => { let link = document.createElement("link"); link.rel = "prefetch"; link.href = testURI("resource", "prefetch", key); document.getElementsByTagName("head")[0].appendChild(link); await sleepMs(500); let response = await fetch( testURI("ctr", "prefetch", key), {"cache": "reload"}); let countString = (await response.text()).trim(); if (parseInt(countString) === 0) { throw new Error("No requests received"); } return countString; } result, same first party: 1, 1, 1, 1, 1 result, different first party: 1, 1, 1, 1, 1 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { let link = document.createElement("link"); link.rel = "prefetch"; link.href = testURI("resource", "prefetch", key); document.getElementsByTagName("head")[0].appendChild(link); return key; } read: async (key) => { let link = document.createElement("link"); link.rel = "prefetch"; link.href = testURI("resource", "prefetch", key); document.getElementsByTagName("head")[0].appendChild(link); await sleepMs(500); let response = await fetch( testURI("ctr", "prefetch", key), {"cache": "reload"}); let countString = (await response.text()).trim(); if (parseInt(countString) === 0) { throw new Error("No requests received"); } return countString; } result, same first party: 1, 1, 1, 1, 1 result, different first party: 1, 1, 1, 1, 1 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { let link = document.createElement("link"); link.rel = "prefetch"; link.href = testURI("resource", "prefetch", key); document.getElementsByTagName("head")[0].appendChild(link); return key; } read: async (key) => { let link = document.createElement("link"); link.rel = "prefetch"; link.href = testURI("resource", "prefetch", key); document.getElementsByTagName("head")[0].appendChild(link); await sleepMs(500); let response = await fetch( testURI("ctr", "prefetch", key), {"cache": "reload"}); let countString = (await response.text()).trim(); if (parseInt(countString) === 0) { throw new Error("No requests received"); } return countString; } result, same first party: 1, 1, 1, 1, 1 result, different first party: 1, 1, 1, 1, 1 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { let link = document.createElement("link"); link.rel = "prefetch"; link.href = testURI("resource", "prefetch", key); document.getElementsByTagName("head")[0].appendChild(link); return key; } read: async (key) => { let link = document.createElement("link"); link.rel = "prefetch"; link.href = testURI("resource", "prefetch", key); document.getElementsByTagName("head")[0].appendChild(link); await sleepMs(500); let response = await fetch( testURI("ctr", "prefetch", key), {"cache": "reload"}); let countString = (await response.text()).trim(); if (parseInt(countString) === 0) { throw new Error("No requests received"); } return countString; } result, same first party: 1, 1, 1, 1, 1 result, different first party: 1, 1, 1, 1, 1 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { let link = document.createElement("link"); link.rel = "prefetch"; link.href = testURI("resource", "prefetch", key); document.getElementsByTagName("head")[0].appendChild(link); return key; } read: async (key) => { let link = document.createElement("link"); link.rel = "prefetch"; link.href = testURI("resource", "prefetch", key); document.getElementsByTagName("head")[0].appendChild(link); await sleepMs(500); let response = await fetch( testURI("ctr", "prefetch", key), {"cache": "reload"}); let countString = (await response.text()).trim(); if (parseInt(countString) === 0) { throw new Error("No requests received"); } return countString; } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { let link = document.createElement("link"); link.rel = "prefetch"; link.href = testURI("resource", "prefetch", key); document.getElementsByTagName("head")[0].appendChild(link); return key; } read: async (key) => { let link = document.createElement("link"); link.rel = "prefetch"; link.href = testURI("resource", "prefetch", key); document.getElementsByTagName("head")[0].appendChild(link); await sleepMs(500); let response = await fetch( testURI("ctr", "prefetch", key), {"cache": "reload"}); let countString = (await response.text()).trim(); if (parseInt(countString) === 0) { throw new Error("No requests received"); } return countString; } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { let link = document.createElement("link"); link.rel = "prefetch"; link.href = testURI("resource", "prefetch", key); document.getElementsByTagName("head")[0].appendChild(link); return key; } read: async (key) => { let link = document.createElement("link"); link.rel = "prefetch"; link.href = testURI("resource", "prefetch", key); document.getElementsByTagName("head")[0].appendChild(link); await sleepMs(500); let response = await fetch( testURI("ctr", "prefetch", key), {"cache": "reload"}); let countString = (await response.text()).trim(); if (parseInt(countString) === 0) { throw new Error("No requests received"); } return countString; } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 1, 2, 1, 2 unsupported: false, false, false, false, false passed: true, false, true, false, true test failed: false, false, false, false, false
  write: async (key) => { let link = document.createElement("link"); link.rel = "prefetch"; link.href = testURI("resource", "prefetch", key); document.getElementsByTagName("head")[0].appendChild(link); return key; } read: async (key) => { let link = document.createElement("link"); link.rel = "prefetch"; link.href = testURI("resource", "prefetch", key); document.getElementsByTagName("head")[0].appendChild(link); await sleepMs(500); let response = await fetch( testURI("ctr", "prefetch", key), {"cache": "reload"}); let countString = (await response.text()).trim(); if (parseInt(countString) === 0) { throw new Error("No requests received"); } return countString; } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
write: async (key) => { let link = document.createElement("link"); link.rel = "prefetch"; link.href = testURI("resource", "prefetch", key); document.getElementsByTagName("head")[0].appendChild(link); return key; } read: async (key) => { let link = document.createElement("link"); link.rel = "prefetch"; link.href = testURI("resource", "prefetch", key); document.getElementsByTagName("head")[0].appendChild(link); await sleepMs(500); let response = await fetch( testURI("ctr", "prefetch", key), {"cache": "reload"}); let countString = (await response.text()).trim(); if (parseInt(countString) === 0) { throw new Error("No requests received"); } return countString; } result, same first party: Error: No requests received, Error: No requests received, Error: No requests received, Error: No requests received, Error: No requests received result, different first party: Error: No requests received, Error: No requests received, Error: No requests received, Error: No requests received, Error: No requests received unsupported: true, true, true, true, true passed: undefined test failed: false, false, false, false, false
write: async (key) => { let link = document.createElement("link"); link.rel = "prefetch"; link.href = testURI("resource", "prefetch", key); document.getElementsByTagName("head")[0].appendChild(link); return key; } read: async (key) => { let link = document.createElement("link"); link.rel = "prefetch"; link.href = testURI("resource", "prefetch", key); document.getElementsByTagName("head")[0].appendChild(link); await sleepMs(500); let response = await fetch( testURI("ctr", "prefetch", key), {"cache": "reload"}); let countString = (await response.text()).trim(); if (parseInt(countString) === 0) { throw new Error("No requests received"); } return countString; } result, same first party: Error: No requests received, Error: No requests received, Error: No requests received, Error: No requests received, Error: No requests received result, different first party: Error: No requests received, Error: No requests received, Error: No requests received, Error: No requests received, Error: No requests received unsupported: true, true, true, true, true passed: undefined test failed: false, false, false, false, false
  write: async (key) => { let link = document.createElement("link"); link.rel = "prefetch"; link.href = testURI("resource", "prefetch", key); document.getElementsByTagName("head")[0].appendChild(link); return key; } read: async (key) => { let link = document.createElement("link"); link.rel = "prefetch"; link.href = testURI("resource", "prefetch", key); document.getElementsByTagName("head")[0].appendChild(link); await sleepMs(500); let response = await fetch( testURI("ctr", "prefetch", key), {"cache": "reload"}); let countString = (await response.text()).trim(); if (parseInt(countString) === 0) { throw new Error("No requests received"); } return countString; } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { let link = document.createElement("link"); link.rel = "prefetch"; link.href = testURI("resource", "prefetch", key); document.getElementsByTagName("head")[0].appendChild(link); return key; } read: async (key) => { let link = document.createElement("link"); link.rel = "prefetch"; link.href = testURI("resource", "prefetch", key); document.getElementsByTagName("head")[0].appendChild(link); await sleepMs(500); let response = await fetch( testURI("ctr", "prefetch", key), {"cache": "reload"}); let countString = (await response.text()).trim(); if (parseInt(countString) === 0) { throw new Error("No requests received"); } return countString; } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 1 unsupported: false, false, false, false, false passed: true, true, true, true, false test failed: false, false, false, false, false
  write: async (key) => { let link = document.createElement("link"); link.rel = "prefetch"; link.href = testURI("resource", "prefetch", key); document.getElementsByTagName("head")[0].appendChild(link); return key; } read: async (key) => { let link = document.createElement("link"); link.rel = "prefetch"; link.href = testURI("resource", "prefetch", key); document.getElementsByTagName("head")[0].appendChild(link); await sleepMs(500); let response = await fetch( testURI("ctr", "prefetch", key), {"cache": "reload"}); let countString = (await response.text()).trim(); if (parseInt(countString) === 0) { throw new Error("No requests received"); } return countString; } result, same first party: 1, 1, 1, 1, 1 result, different first party: 2, 2, 2, 2, 2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
ServiceWorkerThe ServiceWorker API allows websites to run code in the background and store content in the browser for offline use. If a ServiceWorker can be accessed from multiple websites, it can be abused to track users across sites.
  write: async (key) => { if (!navigator.serviceWorker) { throw new Error("Unsupported"); } let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); await fetch(`serviceworker-write?secret=${key}`); } read: async () => { let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); let response = await fetch("serviceworker-read"); return await response.text(); } result, same first party: c8e52af6-394e-4ba5-9e5a-768b2250c427, 7ac617e9-e2f8-488c-abe5-d4a86f2b2fba, 1404df63-2251-49f4-ac4c-bc952af1748f, 4b7501c2-9a6c-488c-b11a-6edd2d4d37f3, 99a93ab7-68c3-44c3-aff2-700393770f8b result, different first party: Error: Failed to register a ServiceWorker for scope ('https://arthuredelstein.net/test-pages/') with script ('https://arthuredelstein.net/test-pages/serviceWorker.js'): The user denied permission to use Service Worker., Error: Failed to register a ServiceWorker for scope ('https://arthuredelstein.net/test-pages/') with script ('https://arthuredelstein.net/test-pages/serviceWorker.js'): The user denied permission to use Service Worker., Error: Failed to register a ServiceWorker for scope ('https://arthuredelstein.net/test-pages/') with script ('https://arthuredelstein.net/test-pages/serviceWorker.js'): The user denied permission to use Service Worker., Error: Failed to register a ServiceWorker for scope ('https://arthuredelstein.net/test-pages/') with script ('https://arthuredelstein.net/test-pages/serviceWorker.js'): The user denied permission to use Service Worker., Error: Failed to register a ServiceWorker for scope ('https://arthuredelstein.net/test-pages/') with script ('https://arthuredelstein.net/test-pages/serviceWorker.js'): The user denied permission to use Service Worker. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { if (!navigator.serviceWorker) { throw new Error("Unsupported"); } let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); await fetch(`serviceworker-write?secret=${key}`); } read: async () => { let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); let response = await fetch("serviceworker-read"); return await response.text(); } result, same first party: 57d15629-4e8d-4236-8122-bc2699441dbb, 3fe9d13e-8755-46d2-8429-9a36af9b8a31, 110c1a21-8b0b-43be-98a3-6d7c6a7adb89, 0ca631f0-0924-46d4-89f1-8dd753849fa8, fddbc41f-7369-4847-9396-2eb671e081df result, different first party: Error: Failed to register a ServiceWorker for scope ('https://arthuredelstein.net/test-pages/') with script ('https://arthuredelstein.net/test-pages/serviceWorker.js'): The user denied permission to use Service Worker., Error: Failed to register a ServiceWorker for scope ('https://arthuredelstein.net/test-pages/') with script ('https://arthuredelstein.net/test-pages/serviceWorker.js'): The user denied permission to use Service Worker., Error: Failed to register a ServiceWorker for scope ('https://arthuredelstein.net/test-pages/') with script ('https://arthuredelstein.net/test-pages/serviceWorker.js'): The user denied permission to use Service Worker., Error: Failed to register a ServiceWorker for scope ('https://arthuredelstein.net/test-pages/') with script ('https://arthuredelstein.net/test-pages/serviceWorker.js'): The user denied permission to use Service Worker., Error: Failed to register a ServiceWorker for scope ('https://arthuredelstein.net/test-pages/') with script ('https://arthuredelstein.net/test-pages/serviceWorker.js'): The user denied permission to use Service Worker. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { if (!navigator.serviceWorker) { throw new Error("Unsupported"); } let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); await fetch(`serviceworker-write?secret=${key}`); } read: async () => { let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); let response = await fetch("serviceworker-read"); return await response.text(); } result, same first party: acecc55e-0c38-403f-b92d-5af30acf612a, 72dce12c-80c2-4d1e-9af7-33bb86e1d8fd, b8943e54-d369-4d25-81fc-d20916423114, b5035722-831b-4b8a-880b-19a0bdeb2c84, f376eedb-a883-4ac3-a7eb-2fe3769df4b3 result, different first party: Error: Failed to register a ServiceWorker for scope ('https://arthuredelstein.net/test-pages/') with script ('https://arthuredelstein.net/test-pages/serviceWorker.js'): The user denied permission to use Service Worker., Error: Failed to register a ServiceWorker for scope ('https://arthuredelstein.net/test-pages/') with script ('https://arthuredelstein.net/test-pages/serviceWorker.js'): The user denied permission to use Service Worker., Error: Failed to register a ServiceWorker for scope ('https://arthuredelstein.net/test-pages/') with script ('https://arthuredelstein.net/test-pages/serviceWorker.js'): The user denied permission to use Service Worker., Error: Failed to register a ServiceWorker for scope ('https://arthuredelstein.net/test-pages/') with script ('https://arthuredelstein.net/test-pages/serviceWorker.js'): The user denied permission to use Service Worker., Error: Failed to register a ServiceWorker for scope ('https://arthuredelstein.net/test-pages/') with script ('https://arthuredelstein.net/test-pages/serviceWorker.js'): The user denied permission to use Service Worker. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { if (!navigator.serviceWorker) { throw new Error("Unsupported"); } let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); await fetch(`serviceworker-write?secret=${key}`); } read: async () => { let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); let response = await fetch("serviceworker-read"); return await response.text(); } result, same first party: d58a44ed-765a-4364-8e8b-0817e0eb5ec3, 40fdba78-111f-43a9-8130-7021b3c60588, ed706a23-1b69-4d50-aca6-e2c3bc9041d7, 73368ce6-aa14-4622-923a-3140abe918b2, f9c5a914-2f36-4d12-a42a-d6be57549389 result, different first party: d58a44ed-765a-4364-8e8b-0817e0eb5ec3, 40fdba78-111f-43a9-8130-7021b3c60588, ed706a23-1b69-4d50-aca6-e2c3bc9041d7, 73368ce6-aa14-4622-923a-3140abe918b2, f9c5a914-2f36-4d12-a42a-d6be57549389 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { if (!navigator.serviceWorker) { throw new Error("Unsupported"); } let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); await fetch(`serviceworker-write?secret=${key}`); } read: async () => { let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); let response = await fetch("serviceworker-read"); return await response.text(); } result, same first party: 6702f336-1bd3-4e33-873d-c1f1109ad894, f7e7c7c5-21ac-47fb-a266-328b23d6b756, 872e3eaf-3210-4a01-839a-3c9640f67be3, 68dd4f2a-3b55-4f8c-bc4d-d210ad8f8eba, c024f4c5-fce3-4914-972a-3e0f82988162 result, different first party: Error: Failed to register a ServiceWorker for scope ('https://arthuredelstein.net/test-pages/') with script ('https://arthuredelstein.net/test-pages/serviceWorker.js'): The user denied permission to use Service Worker., Error: Failed to register a ServiceWorker for scope ('https://arthuredelstein.net/test-pages/') with script ('https://arthuredelstein.net/test-pages/serviceWorker.js'): The user denied permission to use Service Worker., Error: Failed to register a ServiceWorker for scope ('https://arthuredelstein.net/test-pages/') with script ('https://arthuredelstein.net/test-pages/serviceWorker.js'): The user denied permission to use Service Worker., Error: Failed to register a ServiceWorker for scope ('https://arthuredelstein.net/test-pages/') with script ('https://arthuredelstein.net/test-pages/serviceWorker.js'): The user denied permission to use Service Worker., Error: Failed to register a ServiceWorker for scope ('https://arthuredelstein.net/test-pages/') with script ('https://arthuredelstein.net/test-pages/serviceWorker.js'): The user denied permission to use Service Worker. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { if (!navigator.serviceWorker) { throw new Error("Unsupported"); } let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); await fetch(`serviceworker-write?secret=${key}`); } read: async () => { let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); let response = await fetch("serviceworker-read"); return await response.text(); } result, same first party: 38112110-ef99-4c99-933e-5018bda96f19, c6fc3aed-cc47-4cd4-b3ee-7eee6a6b2fc3, a5900671-1da4-4e1d-8a89-73903ad421bd, 18f6f36e-46ef-499c-9f3f-1eb2c483bedf, 55321559-3ea6-4886-a631-20a5c7f6f4a4 result, different first party: 38112110-ef99-4c99-933e-5018bda96f19, c6fc3aed-cc47-4cd4-b3ee-7eee6a6b2fc3, a5900671-1da4-4e1d-8a89-73903ad421bd, 18f6f36e-46ef-499c-9f3f-1eb2c483bedf, 55321559-3ea6-4886-a631-20a5c7f6f4a4 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { if (!navigator.serviceWorker) { throw new Error("Unsupported"); } let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); await fetch(`serviceworker-write?secret=${key}`); } read: async () => { let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); let response = await fetch("serviceworker-read"); return await response.text(); } result, same first party: abb7f980-2429-45ef-a355-7b9ab2fa415d, 63b995d6-b03d-4156-adc1-584b20f54156, e6ecd287-76e9-40e9-9acb-87df470b20b5, 2d9429d1-ed1e-454a-82c6-4a458391bf58, 4293188b-bd29-46d7-a33a-88c16f95bdf4 result, different first party: abb7f980-2429-45ef-a355-7b9ab2fa415d, 63b995d6-b03d-4156-adc1-584b20f54156, e6ecd287-76e9-40e9-9acb-87df470b20b5, 2d9429d1-ed1e-454a-82c6-4a458391bf58, 4293188b-bd29-46d7-a33a-88c16f95bdf4 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { if (!navigator.serviceWorker) { throw new Error("Unsupported"); } let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); await fetch(`serviceworker-write?secret=${key}`); } read: async () => { let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); let response = await fetch("serviceworker-read"); return await response.text(); } result, same first party: dfaf0d3a-3df5-4e5f-ad7a-4034a16cc25d, da10a4d6-a0b9-4f1e-8c86-e2a23b3b06cc, 2b5b28f0-e24b-4562-a5cf-115f0794b2a1, 2b69dc75-b49f-454c-a4ac-cabbc2c9be6a, 4ccd6c86-5d41-4a5a-b824-0811a085db96 result, different first party: dfaf0d3a-3df5-4e5f-ad7a-4034a16cc25d, da10a4d6-a0b9-4f1e-8c86-e2a23b3b06cc, 2b5b28f0-e24b-4562-a5cf-115f0794b2a1, 2b69dc75-b49f-454c-a4ac-cabbc2c9be6a, 4ccd6c86-5d41-4a5a-b824-0811a085db96 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
write: async (key) => { if (!navigator.serviceWorker) { throw new Error("Unsupported"); } let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); await fetch(`serviceworker-write?secret=${key}`); } read: async () => { let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); let response = await fetch("serviceworker-read"); return await response.text(); } result, same first party: Error: navigator.serviceWorker is undefined, Error: navigator.serviceWorker is undefined, Error: navigator.serviceWorker is undefined, Error: navigator.serviceWorker is undefined, Error: navigator.serviceWorker is undefined result, different first party: Error: navigator.serviceWorker is undefined, Error: navigator.serviceWorker is undefined, Error: navigator.serviceWorker is undefined, Error: navigator.serviceWorker is undefined, Error: navigator.serviceWorker is undefined unsupported: true, true, true, true, true passed: undefined test failed: false, false, false, false, false
  write: async (key) => { if (!navigator.serviceWorker) { throw new Error("Unsupported"); } let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); await fetch(`serviceworker-write?secret=${key}`); } read: async () => { let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); let response = await fetch("serviceworker-read"); return await response.text(); } result, same first party: 558455ca-ab7c-47ad-9d13-14723a3aa1c1, 2be408e8-df66-4012-b22f-675070920520, 652282fe-6f8d-4dd5-8087-c12fb99176e4, 2ff00698-f72a-443c-8ce9-bd81acea95b4, d562eddf-0239-4f80-8bbd-589eb568277b result, different first party: 558455ca-ab7c-47ad-9d13-14723a3aa1c1, 2be408e8-df66-4012-b22f-675070920520, 652282fe-6f8d-4dd5-8087-c12fb99176e4, 2ff00698-f72a-443c-8ce9-bd81acea95b4, d562eddf-0239-4f80-8bbd-589eb568277b unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { if (!navigator.serviceWorker) { throw new Error("Unsupported"); } let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); await fetch(`serviceworker-write?secret=${key}`); } read: async () => { let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); let response = await fetch("serviceworker-read"); return await response.text(); } result, same first party: 4a360b5f-ba1a-4cea-a8da-89bab0ffdfa6, 7d1f0819-2c2d-4dc5-8e21-0a80e95b64ee, 42d88b90-7100-40f0-bce3-4d2dfe73ff7e, a7fdeceb-0e25-44a6-b6fe-a508d7aea5b4, b7bcaa48-54f7-4f55-97d8-de76f417e955 result, different first party: Error: Failed to register a ServiceWorker for scope ('https://arthuredelstein.net/test-pages/') with script ('https://arthuredelstein.net/test-pages/serviceWorker.js'): The user denied permission to use Service Worker., Error: Failed to register a ServiceWorker for scope ('https://arthuredelstein.net/test-pages/') with script ('https://arthuredelstein.net/test-pages/serviceWorker.js'): The user denied permission to use Service Worker., Error: Failed to register a ServiceWorker for scope ('https://arthuredelstein.net/test-pages/') with script ('https://arthuredelstein.net/test-pages/serviceWorker.js'): The user denied permission to use Service Worker., Error: Failed to register a ServiceWorker for scope ('https://arthuredelstein.net/test-pages/') with script ('https://arthuredelstein.net/test-pages/serviceWorker.js'): The user denied permission to use Service Worker., Error: Failed to register a ServiceWorker for scope ('https://arthuredelstein.net/test-pages/') with script ('https://arthuredelstein.net/test-pages/serviceWorker.js'): The user denied permission to use Service Worker. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { if (!navigator.serviceWorker) { throw new Error("Unsupported"); } let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); await fetch(`serviceworker-write?secret=${key}`); } read: async () => { let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); let response = await fetch("serviceworker-read"); return await response.text(); } result, same first party: 13632dad-100d-4bbb-82ad-1f6affef616f, 32b60130-451a-4964-8bf8-84317dcba86e, 629d90d9-fabe-46dc-bd67-58812eb88f88, 0872209d-9185-4713-b394-19833302c180, 4d956e34-e340-4716-a118-e56856183614 result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { if (!navigator.serviceWorker) { throw new Error("Unsupported"); } let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); await fetch(`serviceworker-write?secret=${key}`); } read: async () => { let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); let response = await fetch("serviceworker-read"); return await response.text(); } result, same first party: 0dede2d4-0353-4d9a-a762-593ec771912e, 18f1dee3-bf30-4fa6-8487-1995537e83e7, a7e59006-e97b-4cff-a08b-ff0403ee1127, 91e7c82f-2d4b-4e6d-ab82-a0d23f579b24, cb927c30-e6d7-4338-9926-dc77e6acea4e result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
write: async (key) => { if (!navigator.serviceWorker) { throw new Error("Unsupported"); } let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); await fetch(`serviceworker-write?secret=${key}`); } read: async () => { let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); let response = await fetch("serviceworker-read"); return await response.text(); } result, same first party: Error: navigator.serviceWorker is undefined, Error: navigator.serviceWorker is undefined, Error: navigator.serviceWorker is undefined, Error: navigator.serviceWorker is undefined, Error: navigator.serviceWorker is undefined result, different first party: Error: navigator.serviceWorker is undefined, Error: navigator.serviceWorker is undefined, Error: navigator.serviceWorker is undefined, Error: navigator.serviceWorker is undefined, Error: navigator.serviceWorker is undefined unsupported: true, true, true, true, true passed: undefined test failed: false, false, false, false, false
  write: async (key) => { if (!navigator.serviceWorker) { throw new Error("Unsupported"); } let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); await fetch(`serviceworker-write?secret=${key}`); } read: async () => { let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); let response = await fetch("serviceworker-read"); return await response.text(); } result, same first party: 16aca853-50e8-41e1-91c9-42e6b447ea0b, 1568704e-d4cd-48d5-b274-7dbd8c8c7e6a, 8c99f84e-0733-442d-bd0b-254bce33169e, 04c4a7a5-6dbe-491a-9dd2-3c538978f963, 1ea5d0ae-570c-4e85-9731-0526e3a0df65 result, different first party: 16aca853-50e8-41e1-91c9-42e6b447ea0b, 1568704e-d4cd-48d5-b274-7dbd8c8c7e6a, 8c99f84e-0733-442d-bd0b-254bce33169e, 04c4a7a5-6dbe-491a-9dd2-3c538978f963, 1ea5d0ae-570c-4e85-9731-0526e3a0df65 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { if (!navigator.serviceWorker) { throw new Error("Unsupported"); } let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); await fetch(`serviceworker-write?secret=${key}`); } read: async () => { let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); let response = await fetch("serviceworker-read"); return await response.text(); } result, same first party: d8fc412f-e3c8-46d9-9b44-70894a3c88bb, 41db4977-d4e9-437a-b6af-7121adad1a4d, d31c2b39-daa4-4c14-ba87-3b9a574057b8, 8379e908-5f32-490f-a01a-8cf8ccc7b509, ed6cd199-8552-42ce-8392-72f28db90cba result, different first party: Error: Failed to register a ServiceWorker for scope ('https://arthuredelstein.net/test-pages/') with script ('https://arthuredelstein.net/test-pages/serviceWorker.js'): The user denied permission to use Service Worker., Error: Failed to register a ServiceWorker for scope ('https://arthuredelstein.net/test-pages/') with script ('https://arthuredelstein.net/test-pages/serviceWorker.js'): The user denied permission to use Service Worker., Error: Failed to register a ServiceWorker for scope ('https://arthuredelstein.net/test-pages/') with script ('https://arthuredelstein.net/test-pages/serviceWorker.js'): The user denied permission to use Service Worker., Error: Failed to register a ServiceWorker for scope ('https://arthuredelstein.net/test-pages/') with script ('https://arthuredelstein.net/test-pages/serviceWorker.js'): The user denied permission to use Service Worker., Error: Failed to register a ServiceWorker for scope ('https://arthuredelstein.net/test-pages/') with script ('https://arthuredelstein.net/test-pages/serviceWorker.js'): The user denied permission to use Service Worker. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
SharedWorkerThe SharedWorker API allows scripts from multiple tabs to share a background thread of computation. If SharedWorker is not partitioned, then it can be abused to shared data between websites in your browser.
  write: (secret) => { try { let worker = new SharedWorker("supercookies_sharedworker.js"); worker.port.start(); worker.port.postMessage(secret); } catch (e) { throw new Error("Unsupported"); } } read: () => new Promise((resolve, reject) => { let worker = new SharedWorker("supercookies_sharedworker.js"); worker.port.start(); worker.port.postMessage("request"); worker.port.onmessage = (e) => resolve(e.data); setTimeout(() => reject("no SharedWorker message received"), 100); }) result, same first party: c8e52af6-394e-4ba5-9e5a-768b2250c427, 7ac617e9-e2f8-488c-abe5-d4a86f2b2fba, 1404df63-2251-49f4-ac4c-bc952af1748f, 4b7501c2-9a6c-488c-b11a-6edd2d4d37f3, 99a93ab7-68c3-44c3-aff2-700393770f8b result, different first party: Error: undefined, Error: undefined, Error: undefined, Error: undefined, Error: undefined unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => { try { let worker = new SharedWorker("supercookies_sharedworker.js"); worker.port.start(); worker.port.postMessage(secret); } catch (e) { throw new Error("Unsupported"); } } read: () => new Promise((resolve, reject) => { let worker = new SharedWorker("supercookies_sharedworker.js"); worker.port.start(); worker.port.postMessage("request"); worker.port.onmessage = (e) => resolve(e.data); setTimeout(() => reject("no SharedWorker message received"), 100); }) result, same first party: 57d15629-4e8d-4236-8122-bc2699441dbb, 3fe9d13e-8755-46d2-8429-9a36af9b8a31, 110c1a21-8b0b-43be-98a3-6d7c6a7adb89, 0ca631f0-0924-46d4-89f1-8dd753849fa8, fddbc41f-7369-4847-9396-2eb671e081df result, different first party: Error: undefined, Error: undefined, Error: undefined, Error: undefined, Error: undefined unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => { try { let worker = new SharedWorker("supercookies_sharedworker.js"); worker.port.start(); worker.port.postMessage(secret); } catch (e) { throw new Error("Unsupported"); } } read: () => new Promise((resolve, reject) => { let worker = new SharedWorker("supercookies_sharedworker.js"); worker.port.start(); worker.port.postMessage("request"); worker.port.onmessage = (e) => resolve(e.data); setTimeout(() => reject("no SharedWorker message received"), 100); }) result, same first party: acecc55e-0c38-403f-b92d-5af30acf612a, 72dce12c-80c2-4d1e-9af7-33bb86e1d8fd, b8943e54-d369-4d25-81fc-d20916423114, b5035722-831b-4b8a-880b-19a0bdeb2c84, f376eedb-a883-4ac3-a7eb-2fe3769df4b3 result, different first party: Error: undefined, Error: undefined, Error: undefined, Error: undefined, Error: undefined unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => { try { let worker = new SharedWorker("supercookies_sharedworker.js"); worker.port.start(); worker.port.postMessage(secret); } catch (e) { throw new Error("Unsupported"); } } read: () => new Promise((resolve, reject) => { let worker = new SharedWorker("supercookies_sharedworker.js"); worker.port.start(); worker.port.postMessage("request"); worker.port.onmessage = (e) => resolve(e.data); setTimeout(() => reject("no SharedWorker message received"), 100); }) result, same first party: d58a44ed-765a-4364-8e8b-0817e0eb5ec3, 40fdba78-111f-43a9-8130-7021b3c60588, ed706a23-1b69-4d50-aca6-e2c3bc9041d7, 73368ce6-aa14-4622-923a-3140abe918b2, f9c5a914-2f36-4d12-a42a-d6be57549389 result, different first party: d58a44ed-765a-4364-8e8b-0817e0eb5ec3, 40fdba78-111f-43a9-8130-7021b3c60588, ed706a23-1b69-4d50-aca6-e2c3bc9041d7, 73368ce6-aa14-4622-923a-3140abe918b2, f9c5a914-2f36-4d12-a42a-d6be57549389 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { try { let worker = new SharedWorker("supercookies_sharedworker.js"); worker.port.start(); worker.port.postMessage(secret); } catch (e) { throw new Error("Unsupported"); } } read: () => new Promise((resolve, reject) => { let worker = new SharedWorker("supercookies_sharedworker.js"); worker.port.start(); worker.port.postMessage("request"); worker.port.onmessage = (e) => resolve(e.data); setTimeout(() => reject("no SharedWorker message received"), 100); }) result, same first party: 6702f336-1bd3-4e33-873d-c1f1109ad894, f7e7c7c5-21ac-47fb-a266-328b23d6b756, 872e3eaf-3210-4a01-839a-3c9640f67be3, 68dd4f2a-3b55-4f8c-bc4d-d210ad8f8eba, c024f4c5-fce3-4914-972a-3e0f82988162 result, different first party: Error: undefined, Error: undefined, Error: undefined, Error: undefined, Error: undefined unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => { try { let worker = new SharedWorker("supercookies_sharedworker.js"); worker.port.start(); worker.port.postMessage(secret); } catch (e) { throw new Error("Unsupported"); } } read: () => new Promise((resolve, reject) => { let worker = new SharedWorker("supercookies_sharedworker.js"); worker.port.start(); worker.port.postMessage("request"); worker.port.onmessage = (e) => resolve(e.data); setTimeout(() => reject("no SharedWorker message received"), 100); }) result, same first party: 38112110-ef99-4c99-933e-5018bda96f19, c6fc3aed-cc47-4cd4-b3ee-7eee6a6b2fc3, a5900671-1da4-4e1d-8a89-73903ad421bd, 18f6f36e-46ef-499c-9f3f-1eb2c483bedf, 55321559-3ea6-4886-a631-20a5c7f6f4a4 result, different first party: 38112110-ef99-4c99-933e-5018bda96f19, c6fc3aed-cc47-4cd4-b3ee-7eee6a6b2fc3, a5900671-1da4-4e1d-8a89-73903ad421bd, 18f6f36e-46ef-499c-9f3f-1eb2c483bedf, 55321559-3ea6-4886-a631-20a5c7f6f4a4 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { try { let worker = new SharedWorker("supercookies_sharedworker.js"); worker.port.start(); worker.port.postMessage(secret); } catch (e) { throw new Error("Unsupported"); } } read: () => new Promise((resolve, reject) => { let worker = new SharedWorker("supercookies_sharedworker.js"); worker.port.start(); worker.port.postMessage("request"); worker.port.onmessage = (e) => resolve(e.data); setTimeout(() => reject("no SharedWorker message received"), 100); }) result, same first party: abb7f980-2429-45ef-a355-7b9ab2fa415d, 63b995d6-b03d-4156-adc1-584b20f54156, e6ecd287-76e9-40e9-9acb-87df470b20b5, 2d9429d1-ed1e-454a-82c6-4a458391bf58, 4293188b-bd29-46d7-a33a-88c16f95bdf4 result, different first party: abb7f980-2429-45ef-a355-7b9ab2fa415d, 63b995d6-b03d-4156-adc1-584b20f54156, e6ecd287-76e9-40e9-9acb-87df470b20b5, 2d9429d1-ed1e-454a-82c6-4a458391bf58, 4293188b-bd29-46d7-a33a-88c16f95bdf4 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { try { let worker = new SharedWorker("supercookies_sharedworker.js"); worker.port.start(); worker.port.postMessage(secret); } catch (e) { throw new Error("Unsupported"); } } read: () => new Promise((resolve, reject) => { let worker = new SharedWorker("supercookies_sharedworker.js"); worker.port.start(); worker.port.postMessage("request"); worker.port.onmessage = (e) => resolve(e.data); setTimeout(() => reject("no SharedWorker message received"), 100); }) result, same first party: dfaf0d3a-3df5-4e5f-ad7a-4034a16cc25d, da10a4d6-a0b9-4f1e-8c86-e2a23b3b06cc, 2b5b28f0-e24b-4562-a5cf-115f0794b2a1, 2b69dc75-b49f-454c-a4ac-cabbc2c9be6a, 4ccd6c86-5d41-4a5a-b824-0811a085db96 result, different first party: dfaf0d3a-3df5-4e5f-ad7a-4034a16cc25d, da10a4d6-a0b9-4f1e-8c86-e2a23b3b06cc, 2b5b28f0-e24b-4562-a5cf-115f0794b2a1, 2b69dc75-b49f-454c-a4ac-cabbc2c9be6a, 4ccd6c86-5d41-4a5a-b824-0811a085db96 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { try { let worker = new SharedWorker("supercookies_sharedworker.js"); worker.port.start(); worker.port.postMessage(secret); } catch (e) { throw new Error("Unsupported"); } } read: () => new Promise((resolve, reject) => { let worker = new SharedWorker("supercookies_sharedworker.js"); worker.port.start(); worker.port.postMessage("request"); worker.port.onmessage = (e) => resolve(e.data); setTimeout(() => reject("no SharedWorker message received"), 100); }) result, same first party: ebe7674a-69fc-4832-9a56-02f8d56bc38f, 013e3f1e-4627-451f-972d-0ff7f47f2150, b26c59f9-2106-4da6-95dd-ce45a7772373, 9d2d77b8-6d0c-48d2-aa5e-8ed649b348b3, 4dcad743-499b-46d2-830c-b2293f944cf3 result, different first party: undefined unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => { try { let worker = new SharedWorker("supercookies_sharedworker.js"); worker.port.start(); worker.port.postMessage(secret); } catch (e) { throw new Error("Unsupported"); } } read: () => new Promise((resolve, reject) => { let worker = new SharedWorker("supercookies_sharedworker.js"); worker.port.start(); worker.port.postMessage("request"); worker.port.onmessage = (e) => resolve(e.data); setTimeout(() => reject("no SharedWorker message received"), 100); }) result, same first party: 558455ca-ab7c-47ad-9d13-14723a3aa1c1, 2be408e8-df66-4012-b22f-675070920520, 652282fe-6f8d-4dd5-8087-c12fb99176e4, 2ff00698-f72a-443c-8ce9-bd81acea95b4, d562eddf-0239-4f80-8bbd-589eb568277b result, different first party: 558455ca-ab7c-47ad-9d13-14723a3aa1c1, 2be408e8-df66-4012-b22f-675070920520, 652282fe-6f8d-4dd5-8087-c12fb99176e4, 2ff00698-f72a-443c-8ce9-bd81acea95b4, d562eddf-0239-4f80-8bbd-589eb568277b unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { try { let worker = new SharedWorker("supercookies_sharedworker.js"); worker.port.start(); worker.port.postMessage(secret); } catch (e) { throw new Error("Unsupported"); } } read: () => new Promise((resolve, reject) => { let worker = new SharedWorker("supercookies_sharedworker.js"); worker.port.start(); worker.port.postMessage("request"); worker.port.onmessage = (e) => resolve(e.data); setTimeout(() => reject("no SharedWorker message received"), 100); }) result, same first party: 4a360b5f-ba1a-4cea-a8da-89bab0ffdfa6, 7d1f0819-2c2d-4dc5-8e21-0a80e95b64ee, 42d88b90-7100-40f0-bce3-4d2dfe73ff7e, a7fdeceb-0e25-44a6-b6fe-a508d7aea5b4, b7bcaa48-54f7-4f55-97d8-de76f417e955 result, different first party: Error: undefined, Error: undefined, Error: undefined, Error: undefined, Error: undefined unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
write: (secret) => { try { let worker = new SharedWorker("supercookies_sharedworker.js"); worker.port.start(); worker.port.postMessage(secret); } catch (e) { throw new Error("Unsupported"); } } read: () => new Promise((resolve, reject) => { let worker = new SharedWorker("supercookies_sharedworker.js"); worker.port.start(); worker.port.postMessage("request"); worker.port.onmessage = (e) => resolve(e.data); setTimeout(() => reject("no SharedWorker message received"), 100); }) result, same first party: Error: Can't find variable: SharedWorker, Error: Can't find variable: SharedWorker, Error: Can't find variable: SharedWorker, Error: Can't find variable: SharedWorker, Error: Can't find variable: SharedWorker result, different first party: Error: Can't find variable: SharedWorker, Error: Can't find variable: SharedWorker, Error: Can't find variable: SharedWorker, Error: Can't find variable: SharedWorker, Error: Can't find variable: SharedWorker unsupported: true, true, true, true, true passed: undefined test failed: false, false, false, false, false
write: (secret) => { try { let worker = new SharedWorker("supercookies_sharedworker.js"); worker.port.start(); worker.port.postMessage(secret); } catch (e) { throw new Error("Unsupported"); } } read: () => new Promise((resolve, reject) => { let worker = new SharedWorker("supercookies_sharedworker.js"); worker.port.start(); worker.port.postMessage("request"); worker.port.onmessage = (e) => resolve(e.data); setTimeout(() => reject("no SharedWorker message received"), 100); }) result, same first party: Error: Can't find variable: SharedWorker, Error: Can't find variable: SharedWorker, Error: Can't find variable: SharedWorker, Error: Can't find variable: SharedWorker, Error: Can't find variable: SharedWorker result, different first party: Error: Can't find variable: SharedWorker, Error: Can't find variable: SharedWorker, Error: Can't find variable: SharedWorker, Error: Can't find variable: SharedWorker, Error: Can't find variable: SharedWorker unsupported: true, true, true, true, true passed: undefined test failed: false, false, false, false, false
  write: (secret) => { try { let worker = new SharedWorker("supercookies_sharedworker.js"); worker.port.start(); worker.port.postMessage(secret); } catch (e) { throw new Error("Unsupported"); } } read: () => new Promise((resolve, reject) => { let worker = new SharedWorker("supercookies_sharedworker.js"); worker.port.start(); worker.port.postMessage("request"); worker.port.onmessage = (e) => resolve(e.data); setTimeout(() => reject("no SharedWorker message received"), 100); }) result, same first party: 23f319de-831d-495d-9b96-b346f764c5d3, 14f05b3b-1b00-4eca-b1a1-3a43391d920e, cbfe5b9c-1123-4c7a-956b-231d454acbb7, 34fdb1b1-c7f6-41ba-b0a2-4bdf0d06a240, 54029316-8ea8-4ad2-ac2d-eb50d7c981d1 result, different first party: Error: undefined, Error: undefined, Error: undefined, Error: undefined, Error: undefined unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => { try { let worker = new SharedWorker("supercookies_sharedworker.js"); worker.port.start(); worker.port.postMessage(secret); } catch (e) { throw new Error("Unsupported"); } } read: () => new Promise((resolve, reject) => { let worker = new SharedWorker("supercookies_sharedworker.js"); worker.port.start(); worker.port.postMessage("request"); worker.port.onmessage = (e) => resolve(e.data); setTimeout(() => reject("no SharedWorker message received"), 100); }) result, same first party: 16aca853-50e8-41e1-91c9-42e6b447ea0b, 1568704e-d4cd-48d5-b274-7dbd8c8c7e6a, 8c99f84e-0733-442d-bd0b-254bce33169e, 04c4a7a5-6dbe-491a-9dd2-3c538978f963, 1ea5d0ae-570c-4e85-9731-0526e3a0df65 result, different first party: 16aca853-50e8-41e1-91c9-42e6b447ea0b, 1568704e-d4cd-48d5-b274-7dbd8c8c7e6a, 8c99f84e-0733-442d-bd0b-254bce33169e, 04c4a7a5-6dbe-491a-9dd2-3c538978f963, 1ea5d0ae-570c-4e85-9731-0526e3a0df65 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { try { let worker = new SharedWorker("supercookies_sharedworker.js"); worker.port.start(); worker.port.postMessage(secret); } catch (e) { throw new Error("Unsupported"); } } read: () => new Promise((resolve, reject) => { let worker = new SharedWorker("supercookies_sharedworker.js"); worker.port.start(); worker.port.postMessage("request"); worker.port.onmessage = (e) => resolve(e.data); setTimeout(() => reject("no SharedWorker message received"), 100); }) result, same first party: d8fc412f-e3c8-46d9-9b44-70894a3c88bb, 41db4977-d4e9-437a-b6af-7121adad1a4d, d31c2b39-daa4-4c14-ba87-3b9a574057b8, 8379e908-5f32-490f-a01a-8cf8ccc7b509, ed6cd199-8552-42ce-8392-72f28db90cba result, different first party: Error: undefined, Error: undefined, Error: undefined, Error: undefined, Error: undefined unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
TLS Session IDThe TLS protocol is used by HTTPS to make connections secure. If the browser were to re-use a TLS session, then the session ID could be used to track users across websites.
  write: async () => { let results = await fetch("https://tls.arthuredelstein.net:8900/"); return (await results.json()).sessionId; } read: async () => { let results = await fetch("https://tls.arthuredelstein.net:8900/"); return (await results.json()).sessionId; } result, same first party: 2d4b1f1d0cc4b5d137300d2baa83d5c36cde703313a8595d9db419ac8e967614, 72a7264aaba9b4b503b39e724086ab5060b524ece432304df7dc445dbeb53318, 58c705c67fbd5332b20168517ddacbaf6f459dabd006fc2ec90d96986daa50c1, fa4b70d1fc9e8500404e25df10e3dd3fc8ab7ec6e8231cdd2f9f778555082535, e021165aae7aa721b10c63cefc797e577e3a38d3f4b2166c318a22bbea39d4d2 result, different first party: 0430c580d025e3242cd56095df7bf432582b9915497227dfbd78827b8d193d14, 04305a78462761ee45eab9584df4358b0e973a07d4e62874c4c999740006a451, 04304e9356c5e5d4560be0ab446a1637bfa7860878b114ccc3b638d194c4ab46, 04304fc8e64bbf7035ed3efe4235e6adaf2f81b5f042512e2724c897e2e8ec0a, 043095fbc23464ca03c3b5fd4999758ed5bb3dbbad2701dc344641a282d591fa unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async () => { let results = await fetch("https://tls.arthuredelstein.net:8900/"); return (await results.json()).sessionId; } read: async () => { let results = await fetch("https://tls.arthuredelstein.net:8900/"); return (await results.json()).sessionId; } result, same first party: bf349dbc975129682b8849edf6653e4103d1ec036e1644b801aef8dc16e7711f, d83b3c84d2133501d2b7361bf3a041a9e727fc8ff2ac34b757fb0c8e552e4e7b, 5bcd34af328ced4b2b58075fdcc659ac067b1bac680373dd128c63b7b92d3469, 341cf3dfc49d94319d180db2ee237ddb1e0375d032ea9c8541a62e9896e14c21, d46807dab697d8d657eda26ba6bd21bf44ed8bc91dad7226416d11a02d8568ca result, different first party: 04300c4be00d0809809a10cb8bd94c67f738dfe9c54a2cb10e9769a6301f2554, 04300b5b1a44bccc08f85a057307ecf628bdc07a276ee99a24996ca57f685763, 043038dc4d5172a79f0d593f926067933ba2d3b22c08a9d1bbde6daaebe99016, 04300827b5eac05bfb8c70194df91e3697700ed99add9f27a146be5fc76765cd, 04300e0213c171e5e1d7dc7bbadb088ff186de94fd6fb445b4df3e6a52c667dc unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async () => { let results = await fetch("https://tls.arthuredelstein.net:8900/"); return (await results.json()).sessionId; } read: async () => { let results = await fetch("https://tls.arthuredelstein.net:8900/"); return (await results.json()).sessionId; } result, same first party: 0a41dc3d4c95db5220b4509fa743125634f5486be5340081ad587b150e73b766, cc9e649c027f55c88a4c4c0930130f7c415ac829cc7a43fb38d82db49db2b622, 40654fbd35afac258cdc0d7c473ca01d33c9cf17f3d1339553b62ddff4148944, fa2485d4ce002d5b54b33b63bf955be30cd82e69f3fe469e7b24c6b8b89be9f4, a6db0141b2a829fcf85e8b433684122e9712cd7c0c387b1b666b24deb3b2ea94 result, different first party: 043039510665eef2b8ce60f37d354ab4cacd1a7a50cefb0882ba21fef14c89d3, 0430757662257d6705987d72db25abcb37bb48563f12dd8672124a4b88ce3bc2, 043074e0904d068659b489e1df2422cce2d57d7153eeecb10b02c2e3b1d21d40, 043002bf39b2a6c46250336795f1b8c82e33e4439525470255e7378151502603, 0430041703685b3f291faa34d68e16282d045466ac1a9fb63b5e7e14159dffe2 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async () => { let results = await fetch("https://tls.arthuredelstein.net:8900/"); return (await results.json()).sessionId; } read: async () => { let results = await fetch("https://tls.arthuredelstein.net:8900/"); return (await results.json()).sessionId; } result, same first party: 2d0425c7ea3a45ab34a2bb8146a23148d07701464446f3f70909ca731313e876, 23d54fa35693fb89119ba304c3d29e1462b6d5a8d32d7fd44b3df9a9ef1c5a0d, 9575ca93883e89ddab9648b021b8924f355bda6f0885128661a187f26ca52a3f, b056409052149db65967b4dfcdb3d494436e2f00795563f7389891a60b0b6f43, 40c86de5d984a0746a755c3cebc0950c4589601713c364c35d74117b904ae4a9 result, different first party: 4ff8984b81f54ea9b9d087ed88aded37f4f7d9fa9d3b20210051da73432e81b3, d5f8e58511d50a5b5e05936e2e87b0535ab3d6d6b321848b8be7b733ad1b9906, fb401eff41e7d1bd3f7db553bcf11903479bb6e13d882d57f12ac39a210f04ed, ab9eaa678e67fe07ea312d56fd0b4d67058ad923f9591c9ce64a706fd912568c, 89f9638481662e9021a6e26c349ecae571bd5a1f39e7383b4a56b52885074d6c unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async () => { let results = await fetch("https://tls.arthuredelstein.net:8900/"); return (await results.json()).sessionId; } read: async () => { let results = await fetch("https://tls.arthuredelstein.net:8900/"); return (await results.json()).sessionId; } result, same first party: 0388ba021e83d17b6ee21b78f22d3848745af817df0298ab89274effd1a29a95, d9aff53f3081ef0dd5d41e245d1da5bbdbf81e42a615abdf67ad20a1fc17160c, 6332ed1a01098ec2722f2f3716217cee543f229e9b588dbcd4972fb1206980a3, df9b15792801fe6e0de0aabf8421239ef3fbde27784c0767e38696d77c61b174, edc1f1befc441e519b3ff200ca5a74838c660e6060db9e04c8cc82213c3e3f92 result, different first party: 03be108e282a1809339a3ed011feb1b81c37d55d78abbe742f614bad87736920, 06d929aafaa9ac0d9a9f233b50445c3047fa5f0df411c908b750cf7f501b427b, e465c986676304ad2fcf48e3b4f04b44b5b01b65c4b09b0d5ab7e789ed0f4a79, 04b1f8a358f83fc805f26ece533dd04ff1ca79e83953d793b2900b6b3574f100, 08f56d3019a749354c5ad13da073bc749890b6b5657b848e7653b45320c60c36 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async () => { let results = await fetch("https://tls.arthuredelstein.net:8900/"); return (await results.json()).sessionId; } read: async () => { let results = await fetch("https://tls.arthuredelstein.net:8900/"); return (await results.json()).sessionId; } result, same first party: a9390ec44038fe390b529b0c9adf5aae96b9df3a610d23a777d1de15c37997c9, 4e0fc4a7c93db272393ed27df435657be696493be1bb4bbd734114b1de5ee426, cf9cc341cbee7b2f5edf1504e9606880066f62c8060d04a3bf8194b56d3efefa, 65c1ac9b84c1ea7611ff375406d2753102d8471d5eb63b0798cd31c6d30073f9, 4d4862adeea07d533462cde648d485309ebe15a377754c4ae9a78586b91a865a result, different first party: cb5a8a9c10682e74f6e57594ff33dd3c3b488299832db595722f1f259560af7f, 74e58f0752176b7cd3b0e72264c983244ceaba975a9a7d3cba9a006c4db85282, b26b92338b36ec2116ebe2ff9da97b8e0b8170945ee62abd37a21677e282436a, 88d256fde9d9185c9b38618545b07202e94bde5408891777d4a4f56baecc303d, e35f83cf5c68665d9a684ae1e89638398aed5536c90211acb9482ae5dbdd2cfa unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async () => { let results = await fetch("https://tls.arthuredelstein.net:8900/"); return (await results.json()).sessionId; } read: async () => { let results = await fetch("https://tls.arthuredelstein.net:8900/"); return (await results.json()).sessionId; } result, same first party: 0c73bf9ad04a81bb366e13c3167f6d900236663a8c24caffb6688ca2414ba83f, 351f1dfd82f9b7ec1a2578a0029a032d69a52ed9773f6b53a817118cfbe3345c, 444c781e8f905d7948fe1c712bcd7fad56baf0c36b6be3be9762ad586ef81e80, dda95207870ec265d74d44fad656829b38265e3cead530b423004c48481969fa, 0eaa7098b53cb501eb518fb19c37c4c09e70f8422de8f24dfdd8bee742910e91 result, different first party: 4e22b41b9f4dececc68b5986b057441bb84b0715c2d2c7f57f0bf0cae9b37815, 3889f4027b001fe3cdcf8938b00eeccbcc3c94cba7b9364f7201528082769576, 4b836006fff4be5f88ad74376a901493f5dd9093aa4d00dbc7600ce38811a93b, b57fb81f9ffc6997320f1226a5ac6207f85bf7507647952fb9d948c3a9e82946, e5f332fafe2bffce141c857d92b395f71a9b9e2abd1516a81b64ed389e16c3f0 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async () => { let results = await fetch("https://tls.arthuredelstein.net:8900/"); return (await results.json()).sessionId; } read: async () => { let results = await fetch("https://tls.arthuredelstein.net:8900/"); return (await results.json()).sessionId; } result, same first party: 9e463084b46a08bcec386f7966e93836e968c0c8590905ee4773ba919f414e26, 12fb0758f4ab58b195576ca5c5a2f3b43a64cd31b95d91bf521ddce9cb5b180d, d0265679fdf57bb53183be657c3c5bd9076d13d0e0a0a2ce7a60477140946b21, 290eab0c514d4a3cbeb3f7b8e8b7824d95fdab3099b3e0c1e7cf725281cfba99, 916effb1be4b11291af87c6bf835f13a7064b09790c0f4d9e04df005f7694925 result, different first party: 0430a50c2c530ad2e0ebf8dc785b0b590f8f8698d618e24eec94c3481132884a, 04301b9fe1b4b13792e8961fac8ff3d1ef91b6b3b071aa8ea6a53a997942d840, 043006017a20fbe6b59d8e0f8f9c4cec3d10dd0d43c1303717aee8e35545ab5c, 043002a4bed244bd9220e0253e6b82efee9744b453799365546bb29d248e80c3, 0430a7d0e8517039a1deed568cbf188a1d122260fc93ba453ba5c76cd507bbdf unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async () => { let results = await fetch("https://tls.arthuredelstein.net:8900/"); return (await results.json()).sessionId; } read: async () => { let results = await fetch("https://tls.arthuredelstein.net:8900/"); return (await results.json()).sessionId; } result, same first party: e76651e94de99053001fa31ba21c366ac16aad9f3da20218ddbb39dc6ab53472, 091ed1e686b47ef94b42706cd0ee877fd38304053500adbf28d9b8a4c1cae5c7, c9869256efd44a6c13bb8d7099d978efa907282f22309b2bed4980822451c8c0, 0cda15f2e865bc446de75ac92d7db542439b764a904e7102e26451168b895ab1, 25ffe30fef9b83f4750c00158ec5e8a29bc630d31840d33dbea4ad56683c0b7d result, different first party: b1bdbfd485106378075a4bfb6f9e740d3bd35177b66fe0338da0c28e6dc607ef, 03ecca69ba65a817a5b68ec1b6afc234c7ac0a61c393ebc5903f4e77b812cb95, 717f4ea8a21be4c17939fab002d5608ab690e136624b916e667f00fcc43907be, f44a4ff8f022a9f81d036b063183d21e0b688244c05b376c690c4a444621dd1e, 5bbf0692fe7df8a1f2fe5977bf2af868c43c7167be9bcd6548b441a9c66fb4f3 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async () => { let results = await fetch("https://tls.arthuredelstein.net:8900/"); return (await results.json()).sessionId; } read: async () => { let results = await fetch("https://tls.arthuredelstein.net:8900/"); return (await results.json()).sessionId; } result, same first party: 1a3bf9fcdc4177b6fe7cf8241683d564d3e086a87b2d60d2deb9e046058744d5, e7f55757c3dc28555b72e306e5070c9032dcf6b8a39a306152b1817cc64b86c4, 82a8f5ac4e2028e42b30f217b91179780bd6ba90679f941a0232e6fc5d74d9a4, a101214db22cc4ed340a3b34a7bd5a079e8919ec27625eb321116420743e6dac, c4c481fa43d095fb1744b66464556115ab8aae4a4d621fc4c18848b72311028f result, different first party: ebe93ac94969a0357c0a338aa68529905071c050e954193c9a40ffb2016a04b0, e87aa12a4689040c5edab8a92fce34bc08b8a1084d3bdc653d32835e068714bb, 18f6246de8ff19a249d56cd230aa4492c0fad9a055080e2b56ee219e117c7d88, 8541b5aab42707ef8b69ab829b8ac05c66e7481f9410589e2cd33152b6486b24, d2b841eaea08601b3fbcec3600788ab32cda866f899a31d80df7bb1976b4227a unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async () => { let results = await fetch("https://tls.arthuredelstein.net:8900/"); return (await results.json()).sessionId; } read: async () => { let results = await fetch("https://tls.arthuredelstein.net:8900/"); return (await results.json()).sessionId; } result, same first party: 826018e18ab94c63cc6a73af3a6b979234d3a3c0c3ac1274c0f6a543d9f19baa, ff9f6d77cde5cf62e968903e43e26912a93f5bccd9030d4b267d4b1ecf9c3a3e, feadd458b34f2b3b45b46c3457ead36b9205f37f5207aeb6113755c2f974e44a, ef448fe61ef6af6ca627d1aea0f29c62940e75bde21abd032fc91148534948f5, b4611d1a6ba8f2a1469c66f86b2e9b15f48b7c99ccfbdea6ab31c00131836b02 result, different first party: 7ddb3a34fac6a6940f863b75671927b37f94bff25ffc4cca426fbe31b4383c69, a5ab6d038490f698b7fe301059866267fe824d054fa5ab743b0dd977a11ae2aa, 17f9088b437e9bd14a4a0c3da8f9f6688b520a4a444e14de24b23504d8f2fd82, 00e3eedf8fad6720ed79c0466d0c75a39b35c08676a43878e4491268742161af, b1da3c005a657e5e74bb5b103ffe0b537c9ee78178c423fd31c2697fcb3f4232 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async () => { let results = await fetch("https://tls.arthuredelstein.net:8900/"); return (await results.json()).sessionId; } read: async () => { let results = await fetch("https://tls.arthuredelstein.net:8900/"); return (await results.json()).sessionId; } result, same first party: 74860271a93704730e32d33bc3c648a10b011a02b3d8c5743a19d14e704a7862, a07eb2d000a774d99dd31b8722a6f83ff988bf35a902926e931b34e87b3f4378, d0dc799ab592915a557470492889c7dd3e7e2a848c63000379ecb4534c89135b, e84ce6042b374525f15eb0a8ffb414fd1d42129202224cc6e238cba9091e87f0, 2462c50300135e12f50aa645b1ebbb0b75432110effa4631ac0746ffaba794d9 result, different first party: dfddb1e1533fa0b760f5dec7cf34cd491f51873286abe39c2fff3f9f1df88746, cef79bba4f4724c5bd8c3c54060ceb8fbb5240b6f072240088f78fa0c3cdca82, e04a510ee989cdae99415a46de3c8c5711dbb3f71bd71c693941352b6d8c0518, 5189b1f7ed546bdce109e3b2c9121ce3d59d6282bde968ead2cc306ce2fdb293, 409ecaff99ed11551ec0e3c8a0955bc28fbd3414eb5a170a8e8a2cf7b79fe813 unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async () => { let results = await fetch("https://tls.arthuredelstein.net:8900/"); return (await results.json()).sessionId; } read: async () => { let results = await fetch("https://tls.arthuredelstein.net:8900/"); return (await results.json()).sessionId; } result, same first party: 5c419e04a00c670d0fecda90d8987ea26f7d0c1dca18cd9411591ae0901225b7, 76ae7f11ff1c6a1b781d58df2a2a27449d397143de419fd3107a68f985716b13, c0db02e3e2f2cc1bd97f14bfc1cecbab9b6884a8acb5b94908880c5c3a59aa88, abfe5b70ea920ad9555c13deba3c32d89d4036ff8d7417b7b681f21aebe34ef6, ec5dcad4dd48493f769559deccfd702d104cb4591a24947b1063094897b90d32 result, different first party: c5c2db9f6a59f7b5131ed1831feaf7e770b449cc6a8362133ea5bd07cc0082d7, 83ba953f7cea548bab5b87609e33d5222e1bd815c6f29da0b214c033d02c9bfd, e6f28b5cfaf2968dd36ab3e84d782c538e087fb461c60ac9a83fbea3d1b6cb73, 0bfcae113ee90acdeb0c02a8b90f42c3fa235826cc328b4a311a88117374f3bd, c56132e651377cb8d3a95deb2a8e3be471cf8d354e84b1fd450c723068156e3c unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async () => { let results = await fetch("https://tls.arthuredelstein.net:8900/"); return (await results.json()).sessionId; } read: async () => { let results = await fetch("https://tls.arthuredelstein.net:8900/"); return (await results.json()).sessionId; } result, same first party: d7cc19d9645c455f2a5d5267e63e75467fdf023a2221efee447e4da8ca4ffebb, b9bafaf6deef6ce94bcd6e8b4d2ea53d5faf2ff497e9e22dc6a86371a356ed4a, 56673989f1038d71eb1673771c9311433a9e39e9c30c47937313d32515ac48c5, e77cc22596992343c85a40c5f6b4612516e00613911594386ad3dc2dc1932ecc, ae6a8285a43a51f8a438328efc18edfbf7ee801de69d87943479507543a97ec2 result, different first party: 54593c8ccefb6798429ab9501bfe09be0abd9b5bed8755b039dc342171ef6553, 1932b9356286b607238a3e7ac59b0734e3732256b1870d1e350ed295e04f33e9, 1311574d9027ed983c15bd737bd2e32f9b1e8d60f667401c7ccd37909ab7d0de, 6c142af8de0c5ea8e36c494ca890703e73d79379a858f4273a22e005effa5ca6, dd8a5fa1434f07c5394336b3a3a7144b41d08349442d86f3a88a816332c593ad unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async () => { let results = await fetch("https://tls.arthuredelstein.net:8900/"); return (await results.json()).sessionId; } read: async () => { let results = await fetch("https://tls.arthuredelstein.net:8900/"); return (await results.json()).sessionId; } result, same first party: d5f9dcc2023db5823dfb41f5e75c0bed0f50c63c8be25f58538ef92ba9bcea6e, 2c69b8200af9b847784caa4194ba87b065fdfe4939f3582be4202e971bb2eb0b, 6758087ca21609f0f713dadb4724cf5183f4cc4ed51eba244aff92da0195cd09, b42971422f258bc55586d3e9cb55e0b0fa0cfa80fd51a3019f18145a0a293add, 5468d323792d9cd27fe64bdff8d0e2e8fae9d7d3f7d3fcf319693b7b2a5d829e result, different first party: e15971ef4493744bae058ce066bea3d725108ff110e478764625cd688e77dfc0, 20b5e117c690b7519d36b97193e0ac839b6c12c0f5b5ccd853a7d0225ecd8c55, 88b731eb8d837f0f2a26b216fae7dbc5865b0de387e64039e795c85e9a2f9ce5, 107b96f5b7ff7627b4de659926de39b9fce43826ef570386382a424d1b6da607, f4b7e4a886196ed1b1d3589b074c512154c14d40c1db581e0df7b13df4fc1d4c unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async () => { let results = await fetch("https://tls.arthuredelstein.net:8900/"); return (await results.json()).sessionId; } read: async () => { let results = await fetch("https://tls.arthuredelstein.net:8900/"); return (await results.json()).sessionId; } result, same first party: c19ee18e43461a084a19f19c78dc20f253094e15c8681ecb9dfee2b8941d05be, 30f2500d3e9e2c91b4e47c85f3f193fe39ea504cf6aca39efa0ad5228fd541f0, 0c5403be3a25792d969af56ec32026365a3f9f019016da54339d7da86375486b, 78661773ea3628b3f1b79f5577102f538027a450c9a10cd46d34a0e831e896e5, bb1f1b3bb3abc14fc08cf4f8e2828cd515a3fc8adf625bc6a073e2d8f3afc863 result, different first party: fa67ae0958a3af5d88da92054c4e3da25668dd31d7c511cbfd2f987e82f6c1d6, 51536f100f31c3f94e29aa6da463e1cc547cc926b85f2b6b3e005fb11edfb423, bb20f444f33018900ed582e2d9996996d9e715ab1c92b3f550cd30b8de51247e, 20a1f169dec6b9518abe5cd8d0385e636ca498ec08734ed344ece5963d57cb78, 3677f74017dc15d379b4c4855cd86865cbca35227413002dc8ff9b9de69f0a2a unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
Web SQL DatabaseThe Web SQL Database is a deprecated web API for storing data in an SQL database.
  write: async (key) => { if (!window.openDatabase) { throw new Error("Unsupported"); } let database = window.openDatabase("sqlite_supercookie", "", "supercookie", 1024 * 1024); let tx = new Promise((resolve) => database.transaction(tx => { tx.executeSql( `CREATE TABLE IF NOT EXISTS cache( id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, name TEXT NOT NULL, value TEXT NOT NULL, UNIQUE (name) )`, [], (tx, rs) => {}, (tx, err) => {}); tx.executeSql( `INSERT OR REPLACE INTO cache(name, value) VALUES(?, ?)`, ["secret", key], (tx, rs) => {}, (tx, rs) => {}); })); } read: async () => { let database = window.openDatabase("sqlite_supercookie", "", "supercookie", 1024 * 1024); let result = await new Promise((resolve, reject) => database.transaction(tx => { tx.executeSql( "SELECT value FROM cache WHERE name=?", ["secret"], (tx, rs) => resolve(rs), (tx, err) => reject(err)); })); return result.rows.item(0).value; } result, same first party: c8e52af6-394e-4ba5-9e5a-768b2250c427, 7ac617e9-e2f8-488c-abe5-d4a86f2b2fba, 1404df63-2251-49f4-ac4c-bc952af1748f, 4b7501c2-9a6c-488c-b11a-6edd2d4d37f3, 99a93ab7-68c3-44c3-aff2-700393770f8b result, different first party: Error: Failed to execute 'openDatabase' on 'Window': Access to the WebDatabase API is denied in third party contexts., Error: Failed to execute 'openDatabase' on 'Window': Access to the WebDatabase API is denied in third party contexts., Error: Failed to execute 'openDatabase' on 'Window': Access to the WebDatabase API is denied in third party contexts., Error: Failed to execute 'openDatabase' on 'Window': Access to the WebDatabase API is denied in third party contexts., Error: Failed to execute 'openDatabase' on 'Window': Access to the WebDatabase API is denied in third party contexts. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { if (!window.openDatabase) { throw new Error("Unsupported"); } let database = window.openDatabase("sqlite_supercookie", "", "supercookie", 1024 * 1024); let tx = new Promise((resolve) => database.transaction(tx => { tx.executeSql( `CREATE TABLE IF NOT EXISTS cache( id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, name TEXT NOT NULL, value TEXT NOT NULL, UNIQUE (name) )`, [], (tx, rs) => {}, (tx, err) => {}); tx.executeSql( `INSERT OR REPLACE INTO cache(name, value) VALUES(?, ?)`, ["secret", key], (tx, rs) => {}, (tx, rs) => {}); })); } read: async () => { let database = window.openDatabase("sqlite_supercookie", "", "supercookie", 1024 * 1024); let result = await new Promise((resolve, reject) => database.transaction(tx => { tx.executeSql( "SELECT value FROM cache WHERE name=?", ["secret"], (tx, rs) => resolve(rs), (tx, err) => reject(err)); })); return result.rows.item(0).value; } result, same first party: 57d15629-4e8d-4236-8122-bc2699441dbb, 3fe9d13e-8755-46d2-8429-9a36af9b8a31, 110c1a21-8b0b-43be-98a3-6d7c6a7adb89, 0ca631f0-0924-46d4-89f1-8dd753849fa8, fddbc41f-7369-4847-9396-2eb671e081df result, different first party: Error: Failed to execute 'openDatabase' on 'Window': Access to the WebDatabase API is denied in third party contexts., Error: Failed to execute 'openDatabase' on 'Window': Access to the WebDatabase API is denied in third party contexts., Error: Failed to execute 'openDatabase' on 'Window': Access to the WebDatabase API is denied in third party contexts., Error: Failed to execute 'openDatabase' on 'Window': Access to the WebDatabase API is denied in third party contexts., Error: Failed to execute 'openDatabase' on 'Window': Access to the WebDatabase API is denied in third party contexts. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { if (!window.openDatabase) { throw new Error("Unsupported"); } let database = window.openDatabase("sqlite_supercookie", "", "supercookie", 1024 * 1024); let tx = new Promise((resolve) => database.transaction(tx => { tx.executeSql( `CREATE TABLE IF NOT EXISTS cache( id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, name TEXT NOT NULL, value TEXT NOT NULL, UNIQUE (name) )`, [], (tx, rs) => {}, (tx, err) => {}); tx.executeSql( `INSERT OR REPLACE INTO cache(name, value) VALUES(?, ?)`, ["secret", key], (tx, rs) => {}, (tx, rs) => {}); })); } read: async () => { let database = window.openDatabase("sqlite_supercookie", "", "supercookie", 1024 * 1024); let result = await new Promise((resolve, reject) => database.transaction(tx => { tx.executeSql( "SELECT value FROM cache WHERE name=?", ["secret"], (tx, rs) => resolve(rs), (tx, err) => reject(err)); })); return result.rows.item(0).value; } result, same first party: acecc55e-0c38-403f-b92d-5af30acf612a, 72dce12c-80c2-4d1e-9af7-33bb86e1d8fd, b8943e54-d369-4d25-81fc-d20916423114, b5035722-831b-4b8a-880b-19a0bdeb2c84, f376eedb-a883-4ac3-a7eb-2fe3769df4b3 result, different first party: Error: Failed to execute 'openDatabase' on 'Window': Access to the WebDatabase API is denied in third party contexts., Error: Failed to execute 'openDatabase' on 'Window': Access to the WebDatabase API is denied in third party contexts., Error: Failed to execute 'openDatabase' on 'Window': Access to the WebDatabase API is denied in third party contexts., Error: Failed to execute 'openDatabase' on 'Window': Access to the WebDatabase API is denied in third party contexts., Error: Failed to execute 'openDatabase' on 'Window': Access to the WebDatabase API is denied in third party contexts. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { if (!window.openDatabase) { throw new Error("Unsupported"); } let database = window.openDatabase("sqlite_supercookie", "", "supercookie", 1024 * 1024); let tx = new Promise((resolve) => database.transaction(tx => { tx.executeSql( `CREATE TABLE IF NOT EXISTS cache( id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, name TEXT NOT NULL, value TEXT NOT NULL, UNIQUE (name) )`, [], (tx, rs) => {}, (tx, err) => {}); tx.executeSql( `INSERT OR REPLACE INTO cache(name, value) VALUES(?, ?)`, ["secret", key], (tx, rs) => {}, (tx, rs) => {}); })); } read: async () => { let database = window.openDatabase("sqlite_supercookie", "", "supercookie", 1024 * 1024); let result = await new Promise((resolve, reject) => database.transaction(tx => { tx.executeSql( "SELECT value FROM cache WHERE name=?", ["secret"], (tx, rs) => resolve(rs), (tx, err) => reject(err)); })); return result.rows.item(0).value; } result, same first party: d58a44ed-765a-4364-8e8b-0817e0eb5ec3, 40fdba78-111f-43a9-8130-7021b3c60588, ed706a23-1b69-4d50-aca6-e2c3bc9041d7, 73368ce6-aa14-4622-923a-3140abe918b2, f9c5a914-2f36-4d12-a42a-d6be57549389 result, different first party: d58a44ed-765a-4364-8e8b-0817e0eb5ec3, 40fdba78-111f-43a9-8130-7021b3c60588, ed706a23-1b69-4d50-aca6-e2c3bc9041d7, 73368ce6-aa14-4622-923a-3140abe918b2, f9c5a914-2f36-4d12-a42a-d6be57549389 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { if (!window.openDatabase) { throw new Error("Unsupported"); } let database = window.openDatabase("sqlite_supercookie", "", "supercookie", 1024 * 1024); let tx = new Promise((resolve) => database.transaction(tx => { tx.executeSql( `CREATE TABLE IF NOT EXISTS cache( id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, name TEXT NOT NULL, value TEXT NOT NULL, UNIQUE (name) )`, [], (tx, rs) => {}, (tx, err) => {}); tx.executeSql( `INSERT OR REPLACE INTO cache(name, value) VALUES(?, ?)`, ["secret", key], (tx, rs) => {}, (tx, rs) => {}); })); } read: async () => { let database = window.openDatabase("sqlite_supercookie", "", "supercookie", 1024 * 1024); let result = await new Promise((resolve, reject) => database.transaction(tx => { tx.executeSql( "SELECT value FROM cache WHERE name=?", ["secret"], (tx, rs) => resolve(rs), (tx, err) => reject(err)); })); return result.rows.item(0).value; } result, same first party: 6702f336-1bd3-4e33-873d-c1f1109ad894, f7e7c7c5-21ac-47fb-a266-328b23d6b756, 872e3eaf-3210-4a01-839a-3c9640f67be3, 68dd4f2a-3b55-4f8c-bc4d-d210ad8f8eba, c024f4c5-fce3-4914-972a-3e0f82988162 result, different first party: Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { if (!window.openDatabase) { throw new Error("Unsupported"); } let database = window.openDatabase("sqlite_supercookie", "", "supercookie", 1024 * 1024); let tx = new Promise((resolve) => database.transaction(tx => { tx.executeSql( `CREATE TABLE IF NOT EXISTS cache( id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, name TEXT NOT NULL, value TEXT NOT NULL, UNIQUE (name) )`, [], (tx, rs) => {}, (tx, err) => {}); tx.executeSql( `INSERT OR REPLACE INTO cache(name, value) VALUES(?, ?)`, ["secret", key], (tx, rs) => {}, (tx, rs) => {}); })); } read: async () => { let database = window.openDatabase("sqlite_supercookie", "", "supercookie", 1024 * 1024); let result = await new Promise((resolve, reject) => database.transaction(tx => { tx.executeSql( "SELECT value FROM cache WHERE name=?", ["secret"], (tx, rs) => resolve(rs), (tx, err) => reject(err)); })); return result.rows.item(0).value; } result, same first party: 38112110-ef99-4c99-933e-5018bda96f19, c6fc3aed-cc47-4cd4-b3ee-7eee6a6b2fc3, a5900671-1da4-4e1d-8a89-73903ad421bd, 18f6f36e-46ef-499c-9f3f-1eb2c483bedf, 55321559-3ea6-4886-a631-20a5c7f6f4a4 result, different first party: 38112110-ef99-4c99-933e-5018bda96f19, c6fc3aed-cc47-4cd4-b3ee-7eee6a6b2fc3, a5900671-1da4-4e1d-8a89-73903ad421bd, 18f6f36e-46ef-499c-9f3f-1eb2c483bedf, 55321559-3ea6-4886-a631-20a5c7f6f4a4 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { if (!window.openDatabase) { throw new Error("Unsupported"); } let database = window.openDatabase("sqlite_supercookie", "", "supercookie", 1024 * 1024); let tx = new Promise((resolve) => database.transaction(tx => { tx.executeSql( `CREATE TABLE IF NOT EXISTS cache( id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, name TEXT NOT NULL, value TEXT NOT NULL, UNIQUE (name) )`, [], (tx, rs) => {}, (tx, err) => {}); tx.executeSql( `INSERT OR REPLACE INTO cache(name, value) VALUES(?, ?)`, ["secret", key], (tx, rs) => {}, (tx, rs) => {}); })); } read: async () => { let database = window.openDatabase("sqlite_supercookie", "", "supercookie", 1024 * 1024); let result = await new Promise((resolve, reject) => database.transaction(tx => { tx.executeSql( "SELECT value FROM cache WHERE name=?", ["secret"], (tx, rs) => resolve(rs), (tx, err) => reject(err)); })); return result.rows.item(0).value; } result, same first party: abb7f980-2429-45ef-a355-7b9ab2fa415d, 63b995d6-b03d-4156-adc1-584b20f54156, e6ecd287-76e9-40e9-9acb-87df470b20b5, 2d9429d1-ed1e-454a-82c6-4a458391bf58, 4293188b-bd29-46d7-a33a-88c16f95bdf4 result, different first party: abb7f980-2429-45ef-a355-7b9ab2fa415d, 63b995d6-b03d-4156-adc1-584b20f54156, e6ecd287-76e9-40e9-9acb-87df470b20b5, 2d9429d1-ed1e-454a-82c6-4a458391bf58, 4293188b-bd29-46d7-a33a-88c16f95bdf4 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
write: async (key) => { if (!window.openDatabase) { throw new Error("Unsupported"); } let database = window.openDatabase("sqlite_supercookie", "", "supercookie", 1024 * 1024); let tx = new Promise((resolve) => database.transaction(tx => { tx.executeSql( `CREATE TABLE IF NOT EXISTS cache( id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, name TEXT NOT NULL, value TEXT NOT NULL, UNIQUE (name) )`, [], (tx, rs) => {}, (tx, err) => {}); tx.executeSql( `INSERT OR REPLACE INTO cache(name, value) VALUES(?, ?)`, ["secret", key], (tx, rs) => {}, (tx, rs) => {}); })); } read: async () => { let database = window.openDatabase("sqlite_supercookie", "", "supercookie", 1024 * 1024); let result = await new Promise((resolve, reject) => database.transaction(tx => { tx.executeSql( "SELECT value FROM cache WHERE name=?", ["secret"], (tx, rs) => resolve(rs), (tx, err) => reject(err)); })); return result.rows.item(0).value; } result, same first party: Error: window.openDatabase is not a function, Error: window.openDatabase is not a function, Error: window.openDatabase is not a function, Error: window.openDatabase is not a function, Error: window.openDatabase is not a function result, different first party: Error: window.openDatabase is not a function, Error: window.openDatabase is not a function, Error: window.openDatabase is not a function, Error: window.openDatabase is not a function, Error: window.openDatabase is not a function unsupported: true, true, true, true, true passed: undefined test failed: false, false, false, false, false
write: async (key) => { if (!window.openDatabase) { throw new Error("Unsupported"); } let database = window.openDatabase("sqlite_supercookie", "", "supercookie", 1024 * 1024); let tx = new Promise((resolve) => database.transaction(tx => { tx.executeSql( `CREATE TABLE IF NOT EXISTS cache( id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, name TEXT NOT NULL, value TEXT NOT NULL, UNIQUE (name) )`, [], (tx, rs) => {}, (tx, err) => {}); tx.executeSql( `INSERT OR REPLACE INTO cache(name, value) VALUES(?, ?)`, ["secret", key], (tx, rs) => {}, (tx, rs) => {}); })); } read: async () => { let database = window.openDatabase("sqlite_supercookie", "", "supercookie", 1024 * 1024); let result = await new Promise((resolve, reject) => database.transaction(tx => { tx.executeSql( "SELECT value FROM cache WHERE name=?", ["secret"], (tx, rs) => resolve(rs), (tx, err) => reject(err)); })); return result.rows.item(0).value; } result, same first party: Error: window.openDatabase is not a function, Error: window.openDatabase is not a function, Error: window.openDatabase is not a function, Error: window.openDatabase is not a function, Error: window.openDatabase is not a function result, different first party: Error: window.openDatabase is not a function, Error: window.openDatabase is not a function, Error: window.openDatabase is not a function, Error: window.openDatabase is not a function, Error: window.openDatabase is not a function unsupported: true, true, true, true, true passed: undefined test failed: false, false, false, false, false
  write: async (key) => { if (!window.openDatabase) { throw new Error("Unsupported"); } let database = window.openDatabase("sqlite_supercookie", "", "supercookie", 1024 * 1024); let tx = new Promise((resolve) => database.transaction(tx => { tx.executeSql( `CREATE TABLE IF NOT EXISTS cache( id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, name TEXT NOT NULL, value TEXT NOT NULL, UNIQUE (name) )`, [], (tx, rs) => {}, (tx, err) => {}); tx.executeSql( `INSERT OR REPLACE INTO cache(name, value) VALUES(?, ?)`, ["secret", key], (tx, rs) => {}, (tx, rs) => {}); })); } read: async () => { let database = window.openDatabase("sqlite_supercookie", "", "supercookie", 1024 * 1024); let result = await new Promise((resolve, reject) => database.transaction(tx => { tx.executeSql( "SELECT value FROM cache WHERE name=?", ["secret"], (tx, rs) => resolve(rs), (tx, err) => reject(err)); })); return result.rows.item(0).value; } result, same first party: 558455ca-ab7c-47ad-9d13-14723a3aa1c1, 2be408e8-df66-4012-b22f-675070920520, 652282fe-6f8d-4dd5-8087-c12fb99176e4, 2ff00698-f72a-443c-8ce9-bd81acea95b4, d562eddf-0239-4f80-8bbd-589eb568277b result, different first party: 558455ca-ab7c-47ad-9d13-14723a3aa1c1, 2be408e8-df66-4012-b22f-675070920520, 652282fe-6f8d-4dd5-8087-c12fb99176e4, 2ff00698-f72a-443c-8ce9-bd81acea95b4, d562eddf-0239-4f80-8bbd-589eb568277b unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { if (!window.openDatabase) { throw new Error("Unsupported"); } let database = window.openDatabase("sqlite_supercookie", "", "supercookie", 1024 * 1024); let tx = new Promise((resolve) => database.transaction(tx => { tx.executeSql( `CREATE TABLE IF NOT EXISTS cache( id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, name TEXT NOT NULL, value TEXT NOT NULL, UNIQUE (name) )`, [], (tx, rs) => {}, (tx, err) => {}); tx.executeSql( `INSERT OR REPLACE INTO cache(name, value) VALUES(?, ?)`, ["secret", key], (tx, rs) => {}, (tx, rs) => {}); })); } read: async () => { let database = window.openDatabase("sqlite_supercookie", "", "supercookie", 1024 * 1024); let result = await new Promise((resolve, reject) => database.transaction(tx => { tx.executeSql( "SELECT value FROM cache WHERE name=?", ["secret"], (tx, rs) => resolve(rs), (tx, err) => reject(err)); })); return result.rows.item(0).value; } result, same first party: 4a360b5f-ba1a-4cea-a8da-89bab0ffdfa6, 7d1f0819-2c2d-4dc5-8e21-0a80e95b64ee, 42d88b90-7100-40f0-bce3-4d2dfe73ff7e, a7fdeceb-0e25-44a6-b6fe-a508d7aea5b4, b7bcaa48-54f7-4f55-97d8-de76f417e955 result, different first party: Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
write: async (key) => { if (!window.openDatabase) { throw new Error("Unsupported"); } let database = window.openDatabase("sqlite_supercookie", "", "supercookie", 1024 * 1024); let tx = new Promise((resolve) => database.transaction(tx => { tx.executeSql( `CREATE TABLE IF NOT EXISTS cache( id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, name TEXT NOT NULL, value TEXT NOT NULL, UNIQUE (name) )`, [], (tx, rs) => {}, (tx, err) => {}); tx.executeSql( `INSERT OR REPLACE INTO cache(name, value) VALUES(?, ?)`, ["secret", key], (tx, rs) => {}, (tx, rs) => {}); })); } read: async () => { let database = window.openDatabase("sqlite_supercookie", "", "supercookie", 1024 * 1024); let result = await new Promise((resolve, reject) => database.transaction(tx => { tx.executeSql( "SELECT value FROM cache WHERE name=?", ["secret"], (tx, rs) => resolve(rs), (tx, err) => reject(err)); })); return result.rows.item(0).value; } result, same first party: Error: Web SQL is deprecated, Error: Web SQL is deprecated, Error: Web SQL is deprecated, Error: Web SQL is deprecated, Error: Web SQL is deprecated result, different first party: Error: Web SQL is deprecated, Error: Web SQL is deprecated, Error: Web SQL is deprecated, Error: Web SQL is deprecated, Error: Web SQL is deprecated unsupported: true, true, true, true, true passed: undefined test failed: false, false, false, false, false
write: async (key) => { if (!window.openDatabase) { throw new Error("Unsupported"); } let database = window.openDatabase("sqlite_supercookie", "", "supercookie", 1024 * 1024); let tx = new Promise((resolve) => database.transaction(tx => { tx.executeSql( `CREATE TABLE IF NOT EXISTS cache( id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, name TEXT NOT NULL, value TEXT NOT NULL, UNIQUE (name) )`, [], (tx, rs) => {}, (tx, err) => {}); tx.executeSql( `INSERT OR REPLACE INTO cache(name, value) VALUES(?, ?)`, ["secret", key], (tx, rs) => {}, (tx, rs) => {}); })); } read: async () => { let database = window.openDatabase("sqlite_supercookie", "", "supercookie", 1024 * 1024); let result = await new Promise((resolve, reject) => database.transaction(tx => { tx.executeSql( "SELECT value FROM cache WHERE name=?", ["secret"], (tx, rs) => resolve(rs), (tx, err) => reject(err)); })); return result.rows.item(0).value; } result, same first party: Error: Web SQL is deprecated, Error: Web SQL is deprecated, Error: Web SQL is deprecated, Error: Web SQL is deprecated, Error: Web SQL is deprecated result, different first party: Error: Web SQL is deprecated, Error: Web SQL is deprecated, Error: Web SQL is deprecated, Error: Web SQL is deprecated, Error: Web SQL is deprecated unsupported: true, true, true, true, true passed: undefined test failed: false, false, false, false, false
write: async (key) => { if (!window.openDatabase) { throw new Error("Unsupported"); } let database = window.openDatabase("sqlite_supercookie", "", "supercookie", 1024 * 1024); let tx = new Promise((resolve) => database.transaction(tx => { tx.executeSql( `CREATE TABLE IF NOT EXISTS cache( id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, name TEXT NOT NULL, value TEXT NOT NULL, UNIQUE (name) )`, [], (tx, rs) => {}, (tx, err) => {}); tx.executeSql( `INSERT OR REPLACE INTO cache(name, value) VALUES(?, ?)`, ["secret", key], (tx, rs) => {}, (tx, rs) => {}); })); } read: async () => { let database = window.openDatabase("sqlite_supercookie", "", "supercookie", 1024 * 1024); let result = await new Promise((resolve, reject) => database.transaction(tx => { tx.executeSql( "SELECT value FROM cache WHERE name=?", ["secret"], (tx, rs) => resolve(rs), (tx, err) => reject(err)); })); return result.rows.item(0).value; } result, same first party: Error: window.openDatabase is not a function, Error: window.openDatabase is not a function, Error: window.openDatabase is not a function, Error: window.openDatabase is not a function, Error: window.openDatabase is not a function result, different first party: Error: window.openDatabase is not a function, Error: window.openDatabase is not a function, Error: window.openDatabase is not a function, Error: window.openDatabase is not a function, Error: window.openDatabase is not a function unsupported: true, true, true, true, true passed: undefined test failed: false, false, false, false, false
  write: async (key) => { if (!window.openDatabase) { throw new Error("Unsupported"); } let database = window.openDatabase("sqlite_supercookie", "", "supercookie", 1024 * 1024); let tx = new Promise((resolve) => database.transaction(tx => { tx.executeSql( `CREATE TABLE IF NOT EXISTS cache( id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, name TEXT NOT NULL, value TEXT NOT NULL, UNIQUE (name) )`, [], (tx, rs) => {}, (tx, err) => {}); tx.executeSql( `INSERT OR REPLACE INTO cache(name, value) VALUES(?, ?)`, ["secret", key], (tx, rs) => {}, (tx, rs) => {}); })); } read: async () => { let database = window.openDatabase("sqlite_supercookie", "", "supercookie", 1024 * 1024); let result = await new Promise((resolve, reject) => database.transaction(tx => { tx.executeSql( "SELECT value FROM cache WHERE name=?", ["secret"], (tx, rs) => resolve(rs), (tx, err) => reject(err)); })); return result.rows.item(0).value; } result, same first party: 16aca853-50e8-41e1-91c9-42e6b447ea0b, 1568704e-d4cd-48d5-b274-7dbd8c8c7e6a, 8c99f84e-0733-442d-bd0b-254bce33169e, 04c4a7a5-6dbe-491a-9dd2-3c538978f963, 1ea5d0ae-570c-4e85-9731-0526e3a0df65 result, different first party: 16aca853-50e8-41e1-91c9-42e6b447ea0b, 1568704e-d4cd-48d5-b274-7dbd8c8c7e6a, 8c99f84e-0733-442d-bd0b-254bce33169e, 04c4a7a5-6dbe-491a-9dd2-3c538978f963, 1ea5d0ae-570c-4e85-9731-0526e3a0df65 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { if (!window.openDatabase) { throw new Error("Unsupported"); } let database = window.openDatabase("sqlite_supercookie", "", "supercookie", 1024 * 1024); let tx = new Promise((resolve) => database.transaction(tx => { tx.executeSql( `CREATE TABLE IF NOT EXISTS cache( id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, name TEXT NOT NULL, value TEXT NOT NULL, UNIQUE (name) )`, [], (tx, rs) => {}, (tx, err) => {}); tx.executeSql( `INSERT OR REPLACE INTO cache(name, value) VALUES(?, ?)`, ["secret", key], (tx, rs) => {}, (tx, rs) => {}); })); } read: async () => { let database = window.openDatabase("sqlite_supercookie", "", "supercookie", 1024 * 1024); let result = await new Promise((resolve, reject) => database.transaction(tx => { tx.executeSql( "SELECT value FROM cache WHERE name=?", ["secret"], (tx, rs) => resolve(rs), (tx, err) => reject(err)); })); return result.rows.item(0).value; } result, same first party: d8fc412f-e3c8-46d9-9b44-70894a3c88bb, 41db4977-d4e9-437a-b6af-7121adad1a4d, d31c2b39-daa4-4c14-ba87-3b9a574057b8, 8379e908-5f32-490f-a01a-8cf8ccc7b509, ed6cd199-8552-42ce-8392-72f28db90cba result, different first party: Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
XMLHttpRequest cacheSimilar to the newer Fetch API, any resource received may be cached by the browser. The cache is potentially vulnerable to cross-site tracking attack.
  write: () => new Promise((resolve, reject) => { let xhr = new XMLHttpRequest(); xhr.addEventListener("load", () => resolve( {"secret": xhr.getResponseHeader("date")})); xhr.open("GET", "https://arthuredelstein.net"); xhr.setRequestHeader("Cache-Control", "no-cache"); xhr.send(); setTimeout(() => reject({message: "XHR: no response"}), 3000); }) read: () => new Promise((resolve, reject) => { let xhr = new XMLHttpRequest(); xhr.addEventListener("load", () => resolve( xhr.getResponseHeader("date"))); xhr.open("GET", "https://arthuredelstein.net"); xhr.setRequestHeader("Cache-Control", "max-age"); xhr.send(); setTimeout(() => reject({message: "XHR: no response"}), 3000); }) result, same first party: Thu, 16 Dec 2021 04:09:50 GMT, Thu, 16 Dec 2021 04:10:22 GMT, Thu, 16 Dec 2021 04:10:53 GMT, Thu, 16 Dec 2021 04:11:24 GMT, Thu, 16 Dec 2021 04:11:55 GMT result, different first party: Fri, 10 Dec 2021 03:01:03 GMT, Fri, 10 Dec 2021 03:01:03 GMT, Fri, 10 Dec 2021 03:01:03 GMT, Fri, 10 Dec 2021 03:01:03 GMT, Fri, 10 Dec 2021 03:01:03 GMT unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: () => new Promise((resolve, reject) => { let xhr = new XMLHttpRequest(); xhr.addEventListener("load", () => resolve( {"secret": xhr.getResponseHeader("date")})); xhr.open("GET", "https://arthuredelstein.net"); xhr.setRequestHeader("Cache-Control", "no-cache"); xhr.send(); setTimeout(() => reject({message: "XHR: no response"}), 3000); }) read: () => new Promise((resolve, reject) => { let xhr = new XMLHttpRequest(); xhr.addEventListener("load", () => resolve( xhr.getResponseHeader("date"))); xhr.open("GET", "https://arthuredelstein.net"); xhr.setRequestHeader("Cache-Control", "max-age"); xhr.send(); setTimeout(() => reject({message: "XHR: no response"}), 3000); }) result, same first party: Thu, 16 Dec 2021 04:12:26 GMT, Thu, 16 Dec 2021 04:12:59 GMT, Thu, 16 Dec 2021 04:13:31 GMT, Thu, 16 Dec 2021 04:14:03 GMT, Thu, 16 Dec 2021 04:14:35 GMT result, different first party: Thu, 16 Dec 2021 04:12:37 GMT, Thu, 16 Dec 2021 04:13:09 GMT, Thu, 16 Dec 2021 04:13:41 GMT, Thu, 16 Dec 2021 04:14:13 GMT, Thu, 16 Dec 2021 04:14:45 GMT unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: () => new Promise((resolve, reject) => { let xhr = new XMLHttpRequest(); xhr.addEventListener("load", () => resolve( {"secret": xhr.getResponseHeader("date")})); xhr.open("GET", "https://arthuredelstein.net"); xhr.setRequestHeader("Cache-Control", "no-cache"); xhr.send(); setTimeout(() => reject({message: "XHR: no response"}), 3000); }) read: () => new Promise((resolve, reject) => { let xhr = new XMLHttpRequest(); xhr.addEventListener("load", () => resolve( xhr.getResponseHeader("date"))); xhr.open("GET", "https://arthuredelstein.net"); xhr.setRequestHeader("Cache-Control", "max-age"); xhr.send(); setTimeout(() => reject({message: "XHR: no response"}), 3000); }) result, same first party: Thu, 16 Dec 2021 04:15:17 GMT, Thu, 16 Dec 2021 04:17:27 GMT, Thu, 16 Dec 2021 04:19:25 GMT, Thu, 16 Dec 2021 04:21:35 GMT, Thu, 16 Dec 2021 04:23:52 GMT result, different first party: Thu, 16 Dec 2021 04:16:06 GMT, Thu, 16 Dec 2021 04:18:13 GMT, Thu, 16 Dec 2021 04:20:13 GMT, Thu, 16 Dec 2021 04:22:25 GMT, Thu, 16 Dec 2021 04:24:37 GMT unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: () => new Promise((resolve, reject) => { let xhr = new XMLHttpRequest(); xhr.addEventListener("load", () => resolve( {"secret": xhr.getResponseHeader("date")})); xhr.open("GET", "https://arthuredelstein.net"); xhr.setRequestHeader("Cache-Control", "no-cache"); xhr.send(); setTimeout(() => reject({message: "XHR: no response"}), 3000); }) read: () => new Promise((resolve, reject) => { let xhr = new XMLHttpRequest(); xhr.addEventListener("load", () => resolve( xhr.getResponseHeader("date"))); xhr.open("GET", "https://arthuredelstein.net"); xhr.setRequestHeader("Cache-Control", "max-age"); xhr.send(); setTimeout(() => reject({message: "XHR: no response"}), 3000); }) result, same first party: Thu, 16 Dec 2021 04:25:46 GMT, Thu, 16 Dec 2021 04:26:17 GMT, Thu, 16 Dec 2021 04:26:45 GMT, Thu, 16 Dec 2021 04:27:12 GMT, Thu, 16 Dec 2021 04:27:39 GMT result, different first party: Fri, 10 Dec 2021 02:20:44 GMT, Fri, 10 Dec 2021 02:20:44 GMT, Fri, 10 Dec 2021 02:20:44 GMT, Fri, 10 Dec 2021 02:20:44 GMT, Fri, 10 Dec 2021 02:20:44 GMT unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: () => new Promise((resolve, reject) => { let xhr = new XMLHttpRequest(); xhr.addEventListener("load", () => resolve( {"secret": xhr.getResponseHeader("date")})); xhr.open("GET", "https://arthuredelstein.net"); xhr.setRequestHeader("Cache-Control", "no-cache"); xhr.send(); setTimeout(() => reject({message: "XHR: no response"}), 3000); }) read: () => new Promise((resolve, reject) => { let xhr = new XMLHttpRequest(); xhr.addEventListener("load", () => resolve( xhr.getResponseHeader("date"))); xhr.open("GET", "https://arthuredelstein.net"); xhr.setRequestHeader("Cache-Control", "max-age"); xhr.send(); setTimeout(() => reject({message: "XHR: no response"}), 3000); }) result, same first party: Thu, 16 Dec 2021 04:28:07 GMT, Thu, 16 Dec 2021 04:28:39 GMT, Thu, 16 Dec 2021 04:29:11 GMT, Thu, 16 Dec 2021 04:29:43 GMT, Thu, 16 Dec 2021 04:30:15 GMT result, different first party: Thu, 16 Dec 2021 04:28:13 GMT, Thu, 16 Dec 2021 04:28:45 GMT, Thu, 16 Dec 2021 04:29:18 GMT, Thu, 16 Dec 2021 04:29:49 GMT, Thu, 16 Dec 2021 04:30:21 GMT unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: () => new Promise((resolve, reject) => { let xhr = new XMLHttpRequest(); xhr.addEventListener("load", () => resolve( {"secret": xhr.getResponseHeader("date")})); xhr.open("GET", "https://arthuredelstein.net"); xhr.setRequestHeader("Cache-Control", "no-cache"); xhr.send(); setTimeout(() => reject({message: "XHR: no response"}), 3000); }) read: () => new Promise((resolve, reject) => { let xhr = new XMLHttpRequest(); xhr.addEventListener("load", () => resolve( xhr.getResponseHeader("date"))); xhr.open("GET", "https://arthuredelstein.net"); xhr.setRequestHeader("Cache-Control", "max-age"); xhr.send(); setTimeout(() => reject({message: "XHR: no response"}), 3000); }) result, same first party: Thu, 16 Dec 2021 04:30:47 GMT, Thu, 16 Dec 2021 04:31:17 GMT, Thu, 16 Dec 2021 04:31:45 GMT, Thu, 16 Dec 2021 04:32:12 GMT, Thu, 16 Dec 2021 04:32:39 GMT result, different first party: Fri, 10 Dec 2021 03:04:55 GMT, Fri, 10 Dec 2021 03:04:55 GMT, Fri, 10 Dec 2021 03:04:55 GMT, Fri, 10 Dec 2021 03:04:55 GMT, Fri, 10 Dec 2021 03:04:55 GMT unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: () => new Promise((resolve, reject) => { let xhr = new XMLHttpRequest(); xhr.addEventListener("load", () => resolve( {"secret": xhr.getResponseHeader("date")})); xhr.open("GET", "https://arthuredelstein.net"); xhr.setRequestHeader("Cache-Control", "no-cache"); xhr.send(); setTimeout(() => reject({message: "XHR: no response"}), 3000); }) read: () => new Promise((resolve, reject) => { let xhr = new XMLHttpRequest(); xhr.addEventListener("load", () => resolve( xhr.getResponseHeader("date"))); xhr.open("GET", "https://arthuredelstein.net"); xhr.setRequestHeader("Cache-Control", "max-age"); xhr.send(); setTimeout(() => reject({message: "XHR: no response"}), 3000); }) result, same first party: Thu, 16 Dec 2021 04:33:07 GMT, Thu, 16 Dec 2021 04:33:39 GMT, Thu, 16 Dec 2021 04:34:11 GMT, Thu, 16 Dec 2021 04:34:43 GMT, Thu, 16 Dec 2021 04:35:15 GMT result, different first party: Thu, 16 Dec 2021 04:33:14 GMT, Thu, 16 Dec 2021 04:33:46 GMT, Thu, 16 Dec 2021 04:34:18 GMT, Thu, 16 Dec 2021 04:34:49 GMT, Thu, 16 Dec 2021 04:35:21 GMT unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: () => new Promise((resolve, reject) => { let xhr = new XMLHttpRequest(); xhr.addEventListener("load", () => resolve( {"secret": xhr.getResponseHeader("date")})); xhr.open("GET", "https://arthuredelstein.net"); xhr.setRequestHeader("Cache-Control", "no-cache"); xhr.send(); setTimeout(() => reject({message: "XHR: no response"}), 3000); }) read: () => new Promise((resolve, reject) => { let xhr = new XMLHttpRequest(); xhr.addEventListener("load", () => resolve( xhr.getResponseHeader("date"))); xhr.open("GET", "https://arthuredelstein.net"); xhr.setRequestHeader("Cache-Control", "max-age"); xhr.send(); setTimeout(() => reject({message: "XHR: no response"}), 3000); }) result, same first party: Thu, 16 Dec 2021 03:45:58 GMT, Thu, 16 Dec 2021 03:46:32 GMT, Thu, 16 Dec 2021 03:47:00 GMT, Thu, 16 Dec 2021 03:47:27 GMT, Thu, 16 Dec 2021 03:47:55 GMT result, different first party: Fri, 10 Dec 2021 02:46:21 GMT, Fri, 10 Dec 2021 02:46:21 GMT, Fri, 10 Dec 2021 02:46:21 GMT, Fri, 10 Dec 2021 02:46:21 GMT, Fri, 10 Dec 2021 02:46:21 GMT unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: () => new Promise((resolve, reject) => { let xhr = new XMLHttpRequest(); xhr.addEventListener("load", () => resolve( {"secret": xhr.getResponseHeader("date")})); xhr.open("GET", "https://arthuredelstein.net"); xhr.setRequestHeader("Cache-Control", "no-cache"); xhr.send(); setTimeout(() => reject({message: "XHR: no response"}), 3000); }) read: () => new Promise((resolve, reject) => { let xhr = new XMLHttpRequest(); xhr.addEventListener("load", () => resolve( xhr.getResponseHeader("date"))); xhr.open("GET", "https://arthuredelstein.net"); xhr.setRequestHeader("Cache-Control", "max-age"); xhr.send(); setTimeout(() => reject({message: "XHR: no response"}), 3000); }) result, same first party: Thu, 16 Dec 2021 03:48:23 GMT, Thu, 16 Dec 2021 03:48:56 GMT, Thu, 16 Dec 2021 03:49:28 GMT, Thu, 16 Dec 2021 03:50:01 GMT, Thu, 16 Dec 2021 03:50:34 GMT result, different first party: Thu, 16 Dec 2021 03:48:33 GMT, Thu, 16 Dec 2021 03:49:06 GMT, Thu, 16 Dec 2021 03:49:38 GMT, Thu, 16 Dec 2021 03:50:10 GMT, Thu, 16 Dec 2021 03:50:44 GMT unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: () => new Promise((resolve, reject) => { let xhr = new XMLHttpRequest(); xhr.addEventListener("load", () => resolve( {"secret": xhr.getResponseHeader("date")})); xhr.open("GET", "https://arthuredelstein.net"); xhr.setRequestHeader("Cache-Control", "no-cache"); xhr.send(); setTimeout(() => reject({message: "XHR: no response"}), 3000); }) read: () => new Promise((resolve, reject) => { let xhr = new XMLHttpRequest(); xhr.addEventListener("load", () => resolve( xhr.getResponseHeader("date"))); xhr.open("GET", "https://arthuredelstein.net"); xhr.setRequestHeader("Cache-Control", "max-age"); xhr.send(); setTimeout(() => reject({message: "XHR: no response"}), 3000); }) result, same first party: Thu, 16 Dec 2021 04:35:46 GMT, Thu, 16 Dec 2021 04:36:18 GMT, Thu, 16 Dec 2021 04:36:45 GMT, Thu, 16 Dec 2021 04:37:13 GMT, Thu, 16 Dec 2021 04:37:41 GMT result, different first party: Fri, 10 Dec 2021 03:05:54 GMT, Fri, 10 Dec 2021 03:05:54 GMT, Fri, 10 Dec 2021 03:05:54 GMT, Fri, 10 Dec 2021 03:05:54 GMT, Fri, 10 Dec 2021 03:05:54 GMT unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: () => new Promise((resolve, reject) => { let xhr = new XMLHttpRequest(); xhr.addEventListener("load", () => resolve( {"secret": xhr.getResponseHeader("date")})); xhr.open("GET", "https://arthuredelstein.net"); xhr.setRequestHeader("Cache-Control", "no-cache"); xhr.send(); setTimeout(() => reject({message: "XHR: no response"}), 3000); }) read: () => new Promise((resolve, reject) => { let xhr = new XMLHttpRequest(); xhr.addEventListener("load", () => resolve( xhr.getResponseHeader("date"))); xhr.open("GET", "https://arthuredelstein.net"); xhr.setRequestHeader("Cache-Control", "max-age"); xhr.send(); setTimeout(() => reject({message: "XHR: no response"}), 3000); }) result, same first party: Thu, 16 Dec 2021 04:38:09 GMT, Thu, 16 Dec 2021 04:38:42 GMT, Thu, 16 Dec 2021 04:39:15 GMT, Thu, 16 Dec 2021 04:39:47 GMT, Thu, 16 Dec 2021 04:40:20 GMT result, different first party: Thu, 16 Dec 2021 04:38:16 GMT, Thu, 16 Dec 2021 04:38:49 GMT, Thu, 16 Dec 2021 04:39:21 GMT, Thu, 16 Dec 2021 04:39:54 GMT, Thu, 16 Dec 2021 04:40:26 GMT unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: () => new Promise((resolve, reject) => { let xhr = new XMLHttpRequest(); xhr.addEventListener("load", () => resolve( {"secret": xhr.getResponseHeader("date")})); xhr.open("GET", "https://arthuredelstein.net"); xhr.setRequestHeader("Cache-Control", "no-cache"); xhr.send(); setTimeout(() => reject({message: "XHR: no response"}), 3000); }) read: () => new Promise((resolve, reject) => { let xhr = new XMLHttpRequest(); xhr.addEventListener("load", () => resolve( xhr.getResponseHeader("date"))); xhr.open("GET", "https://arthuredelstein.net"); xhr.setRequestHeader("Cache-Control", "max-age"); xhr.send(); setTimeout(() => reject({message: "XHR: no response"}), 3000); }) result, same first party: Thu, 16 Dec 2021 03:39:10 GMT, Thu, 16 Dec 2021 03:39:49 GMT, Thu, 16 Dec 2021 03:40:26 GMT, Thu, 16 Dec 2021 03:41:03 GMT, Thu, 16 Dec 2021 03:41:42 GMT result, different first party: Fri, 10 Dec 2021 02:55:45 GMT, Fri, 10 Dec 2021 02:55:45 GMT, Fri, 10 Dec 2021 02:55:45 GMT, Fri, 10 Dec 2021 02:55:45 GMT, Fri, 10 Dec 2021 02:55:45 GMT unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: () => new Promise((resolve, reject) => { let xhr = new XMLHttpRequest(); xhr.addEventListener("load", () => resolve( {"secret": xhr.getResponseHeader("date")})); xhr.open("GET", "https://arthuredelstein.net"); xhr.setRequestHeader("Cache-Control", "no-cache"); xhr.send(); setTimeout(() => reject({message: "XHR: no response"}), 3000); }) read: () => new Promise((resolve, reject) => { let xhr = new XMLHttpRequest(); xhr.addEventListener("load", () => resolve( xhr.getResponseHeader("date"))); xhr.open("GET", "https://arthuredelstein.net"); xhr.setRequestHeader("Cache-Control", "max-age"); xhr.send(); setTimeout(() => reject({message: "XHR: no response"}), 3000); }) result, same first party: Thu, 16 Dec 2021 03:42:29 GMT, Thu, 16 Dec 2021 03:43:14 GMT, Thu, 16 Dec 2021 03:43:58 GMT, Thu, 16 Dec 2021 03:44:43 GMT, Thu, 16 Dec 2021 03:45:28 GMT result, different first party: Thu, 16 Dec 2021 03:42:32 GMT, Thu, 16 Dec 2021 03:43:17 GMT, Thu, 16 Dec 2021 03:44:02 GMT, Thu, 16 Dec 2021 03:44:47 GMT, Thu, 16 Dec 2021 03:45:31 GMT unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: () => new Promise((resolve, reject) => { let xhr = new XMLHttpRequest(); xhr.addEventListener("load", () => resolve( {"secret": xhr.getResponseHeader("date")})); xhr.open("GET", "https://arthuredelstein.net"); xhr.setRequestHeader("Cache-Control", "no-cache"); xhr.send(); setTimeout(() => reject({message: "XHR: no response"}), 3000); }) read: () => new Promise((resolve, reject) => { let xhr = new XMLHttpRequest(); xhr.addEventListener("load", () => resolve( xhr.getResponseHeader("date"))); xhr.open("GET", "https://arthuredelstein.net"); xhr.setRequestHeader("Cache-Control", "max-age"); xhr.send(); setTimeout(() => reject({message: "XHR: no response"}), 3000); }) result, same first party: Thu, 16 Dec 2021 03:51:35 GMT, Thu, 16 Dec 2021 03:54:42 GMT, Thu, 16 Dec 2021 03:58:16 GMT, Thu, 16 Dec 2021 04:03:18 GMT, Thu, 16 Dec 2021 04:06:48 GMT result, different first party: Thu, 16 Dec 2021 03:52:30 GMT, Thu, 16 Dec 2021 03:55:40 GMT, Thu, 16 Dec 2021 03:59:27 GMT, Thu, 16 Dec 2021 04:04:09 GMT, Thu, 16 Dec 2021 04:07:58 GMT unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: () => new Promise((resolve, reject) => { let xhr = new XMLHttpRequest(); xhr.addEventListener("load", () => resolve( {"secret": xhr.getResponseHeader("date")})); xhr.open("GET", "https://arthuredelstein.net"); xhr.setRequestHeader("Cache-Control", "no-cache"); xhr.send(); setTimeout(() => reject({message: "XHR: no response"}), 3000); }) read: () => new Promise((resolve, reject) => { let xhr = new XMLHttpRequest(); xhr.addEventListener("load", () => resolve( xhr.getResponseHeader("date"))); xhr.open("GET", "https://arthuredelstein.net"); xhr.setRequestHeader("Cache-Control", "max-age"); xhr.send(); setTimeout(() => reject({message: "XHR: no response"}), 3000); }) result, same first party: Thu, 16 Dec 2021 04:41:13 GMT, Thu, 16 Dec 2021 04:42:06 GMT, Thu, 16 Dec 2021 04:42:55 GMT, Thu, 16 Dec 2021 04:43:43 GMT, Thu, 16 Dec 2021 04:44:31 GMT result, different first party: Thu, 16 Dec 2021 04:41:19 GMT, Thu, 16 Dec 2021 04:41:19 GMT, Thu, 16 Dec 2021 04:41:19 GMT, Thu, 16 Dec 2021 04:41:19 GMT, Thu, 16 Dec 2021 04:41:19 GMT unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: () => new Promise((resolve, reject) => { let xhr = new XMLHttpRequest(); xhr.addEventListener("load", () => resolve( {"secret": xhr.getResponseHeader("date")})); xhr.open("GET", "https://arthuredelstein.net"); xhr.setRequestHeader("Cache-Control", "no-cache"); xhr.send(); setTimeout(() => reject({message: "XHR: no response"}), 3000); }) read: () => new Promise((resolve, reject) => { let xhr = new XMLHttpRequest(); xhr.addEventListener("load", () => resolve( xhr.getResponseHeader("date"))); xhr.open("GET", "https://arthuredelstein.net"); xhr.setRequestHeader("Cache-Control", "max-age"); xhr.send(); setTimeout(() => reject({message: "XHR: no response"}), 3000); }) result, same first party: Thu, 16 Dec 2021 04:45:20 GMT, Thu, 16 Dec 2021 04:46:13 GMT, Thu, 16 Dec 2021 04:47:06 GMT, Thu, 16 Dec 2021 04:47:59 GMT, Thu, 16 Dec 2021 04:48:52 GMT result, different first party: Thu, 16 Dec 2021 04:45:27 GMT, Thu, 16 Dec 2021 04:46:20 GMT, Thu, 16 Dec 2021 04:47:13 GMT, Thu, 16 Dec 2021 04:48:06 GMT, Thu, 16 Dec 2021 04:48:59 GMT unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
Navigation testsWhen you click a hyperlink to navigate your browser from one site to another, certain browser APIs allow the first site to communicate to the second site. These privacy vulnerabilities can be fixed by introducing new limits on how much data is transfered between sites.
document.referrerThe Referer [sic] request header is a mechanism used by browsers to let a website know where the user is visiting from. This header is inherently tracking users across websites. In recent times, browsers have switched to a policy of trimming a referrer to convey less tracking information, but Referer continues to convey cross-site tracking data by default.
  write: (secret) => { /* do nothing */ } read: () => new Promise((resolve) => { parent.postMessage({"read document.referrer": true}, "*"); addEventListener("message", ({data}) => { resolve(data); }, { once: true }); }) result, same first party: https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/ result, different first party: https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/ unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { /* do nothing */ } read: () => new Promise((resolve) => { parent.postMessage({"read document.referrer": true}, "*"); addEventListener("message", ({data}) => { resolve(data); }, { once: true }); }) result, same first party: https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/ result, different first party: https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/ unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { /* do nothing */ } read: () => new Promise((resolve) => { parent.postMessage({"read document.referrer": true}, "*"); addEventListener("message", ({data}) => { resolve(data); }, { once: true }); }) result, same first party: https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/ result, different first party: https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/ unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { /* do nothing */ } read: () => new Promise((resolve) => { parent.postMessage({"read document.referrer": true}, "*"); addEventListener("message", ({data}) => { resolve(data); }, { once: true }); }) result, same first party: https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/ result, different first party: https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/ unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { /* do nothing */ } read: () => new Promise((resolve) => { parent.postMessage({"read document.referrer": true}, "*"); addEventListener("message", ({data}) => { resolve(data); }, { once: true }); }) result, same first party: https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/ result, different first party: https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/ unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { /* do nothing */ } read: () => new Promise((resolve) => { parent.postMessage({"read document.referrer": true}, "*"); addEventListener("message", ({data}) => { resolve(data); }, { once: true }); }) result, same first party: https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/ result, different first party: https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/ unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { /* do nothing */ } read: () => new Promise((resolve) => { parent.postMessage({"read document.referrer": true}, "*"); addEventListener("message", ({data}) => { resolve(data); }, { once: true }); }) result, same first party: https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/ result, different first party: https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/ unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { /* do nothing */ } read: () => new Promise((resolve) => { parent.postMessage({"read document.referrer": true}, "*"); addEventListener("message", ({data}) => { resolve(data); }, { once: true }); }) result, same first party: https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/ result, different first party: https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/ unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { /* do nothing */ } read: () => new Promise((resolve) => { parent.postMessage({"read document.referrer": true}, "*"); addEventListener("message", ({data}) => { resolve(data); }, { once: true }); }) result, same first party: https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/ result, different first party: https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/ unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { /* do nothing */ } read: () => new Promise((resolve) => { parent.postMessage({"read document.referrer": true}, "*"); addEventListener("message", ({data}) => { resolve(data); }, { once: true }); }) result, same first party: https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/ result, different first party: https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/ unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { /* do nothing */ } read: () => new Promise((resolve) => { parent.postMessage({"read document.referrer": true}, "*"); addEventListener("message", ({data}) => { resolve(data); }, { once: true }); }) result, same first party: https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/ result, different first party: https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/ unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { /* do nothing */ } read: () => new Promise((resolve) => { parent.postMessage({"read document.referrer": true}, "*"); addEventListener("message", ({data}) => { resolve(data); }, { once: true }); }) result, same first party: https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/ result, different first party: https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/ unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { /* do nothing */ } read: () => new Promise((resolve) => { parent.postMessage({"read document.referrer": true}, "*"); addEventListener("message", ({data}) => { resolve(data); }, { once: true }); }) result, same first party: https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/ result, different first party: https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/ unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { /* do nothing */ } read: () => new Promise((resolve) => { parent.postMessage({"read document.referrer": true}, "*"); addEventListener("message", ({data}) => { resolve(data); }, { once: true }); }) result, same first party: https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/ result, different first party: https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/ unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { /* do nothing */ } read: () => new Promise((resolve) => { parent.postMessage({"read document.referrer": true}, "*"); addEventListener("message", ({data}) => { resolve(data); }, { once: true }); }) result, same first party: https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/ result, different first party: https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/ unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { /* do nothing */ } read: () => new Promise((resolve) => { parent.postMessage({"read document.referrer": true}, "*"); addEventListener("message", ({data}) => { resolve(data); }, { once: true }); }) result, same first party: https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/ result, different first party: https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/ unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
sessionStorageThe sessionStorage API is similar to the localStorage API, but it does not persist across tabs or across browser sessions. Nonetheless, it can be used to track users if they navigate from one website to another. This tracking can be thwarted by partitioning sessionStorage between websites.
  write: (secret) => sessionStorage.setItem("secret", secret) read: () => sessionStorage.getItem("secret") result, same first party: c8e52af6-394e-4ba5-9e5a-768b2250c427, 7ac617e9-e2f8-488c-abe5-d4a86f2b2fba, 1404df63-2251-49f4-ac4c-bc952af1748f, 4b7501c2-9a6c-488c-b11a-6edd2d4d37f3, 99a93ab7-68c3-44c3-aff2-700393770f8b result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => sessionStorage.setItem("secret", secret) read: () => sessionStorage.getItem("secret") result, same first party: 57d15629-4e8d-4236-8122-bc2699441dbb, 3fe9d13e-8755-46d2-8429-9a36af9b8a31, 110c1a21-8b0b-43be-98a3-6d7c6a7adb89, 0ca631f0-0924-46d4-89f1-8dd753849fa8, fddbc41f-7369-4847-9396-2eb671e081df result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => sessionStorage.setItem("secret", secret) read: () => sessionStorage.getItem("secret") result, same first party: acecc55e-0c38-403f-b92d-5af30acf612a, 72dce12c-80c2-4d1e-9af7-33bb86e1d8fd, b8943e54-d369-4d25-81fc-d20916423114, b5035722-831b-4b8a-880b-19a0bdeb2c84, f376eedb-a883-4ac3-a7eb-2fe3769df4b3 result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => sessionStorage.setItem("secret", secret) read: () => sessionStorage.getItem("secret") result, same first party: d58a44ed-765a-4364-8e8b-0817e0eb5ec3, 40fdba78-111f-43a9-8130-7021b3c60588, ed706a23-1b69-4d50-aca6-e2c3bc9041d7, 73368ce6-aa14-4622-923a-3140abe918b2, f9c5a914-2f36-4d12-a42a-d6be57549389 result, different first party: d58a44ed-765a-4364-8e8b-0817e0eb5ec3, 40fdba78-111f-43a9-8130-7021b3c60588, ed706a23-1b69-4d50-aca6-e2c3bc9041d7, 73368ce6-aa14-4622-923a-3140abe918b2, f9c5a914-2f36-4d12-a42a-d6be57549389 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => sessionStorage.setItem("secret", secret) read: () => sessionStorage.getItem("secret") result, same first party: 6702f336-1bd3-4e33-873d-c1f1109ad894, f7e7c7c5-21ac-47fb-a266-328b23d6b756, 872e3eaf-3210-4a01-839a-3c9640f67be3, 68dd4f2a-3b55-4f8c-bc4d-d210ad8f8eba, c024f4c5-fce3-4914-972a-3e0f82988162 result, different first party: Error: Failed to read the 'sessionStorage' property from 'Window': Access is denied for this document., Error: Failed to read the 'sessionStorage' property from 'Window': Access is denied for this document., Error: Failed to read the 'sessionStorage' property from 'Window': Access is denied for this document., Error: Failed to read the 'sessionStorage' property from 'Window': Access is denied for this document., Error: Failed to read the 'sessionStorage' property from 'Window': Access is denied for this document. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => sessionStorage.setItem("secret", secret) read: () => sessionStorage.getItem("secret") result, same first party: 38112110-ef99-4c99-933e-5018bda96f19, c6fc3aed-cc47-4cd4-b3ee-7eee6a6b2fc3, a5900671-1da4-4e1d-8a89-73903ad421bd, 18f6f36e-46ef-499c-9f3f-1eb2c483bedf, 55321559-3ea6-4886-a631-20a5c7f6f4a4 result, different first party: 38112110-ef99-4c99-933e-5018bda96f19, c6fc3aed-cc47-4cd4-b3ee-7eee6a6b2fc3, a5900671-1da4-4e1d-8a89-73903ad421bd, 18f6f36e-46ef-499c-9f3f-1eb2c483bedf, 55321559-3ea6-4886-a631-20a5c7f6f4a4 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => sessionStorage.setItem("secret", secret) read: () => sessionStorage.getItem("secret") result, same first party: abb7f980-2429-45ef-a355-7b9ab2fa415d, 63b995d6-b03d-4156-adc1-584b20f54156, e6ecd287-76e9-40e9-9acb-87df470b20b5, 2d9429d1-ed1e-454a-82c6-4a458391bf58, 4293188b-bd29-46d7-a33a-88c16f95bdf4 result, different first party: abb7f980-2429-45ef-a355-7b9ab2fa415d, 63b995d6-b03d-4156-adc1-584b20f54156, e6ecd287-76e9-40e9-9acb-87df470b20b5, 2d9429d1-ed1e-454a-82c6-4a458391bf58, 4293188b-bd29-46d7-a33a-88c16f95bdf4 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => sessionStorage.setItem("secret", secret) read: () => sessionStorage.getItem("secret") result, same first party: dfaf0d3a-3df5-4e5f-ad7a-4034a16cc25d, da10a4d6-a0b9-4f1e-8c86-e2a23b3b06cc, 2b5b28f0-e24b-4562-a5cf-115f0794b2a1, 2b69dc75-b49f-454c-a4ac-cabbc2c9be6a, 4ccd6c86-5d41-4a5a-b824-0811a085db96 result, different first party: dfaf0d3a-3df5-4e5f-ad7a-4034a16cc25d, da10a4d6-a0b9-4f1e-8c86-e2a23b3b06cc, 2b5b28f0-e24b-4562-a5cf-115f0794b2a1, 2b69dc75-b49f-454c-a4ac-cabbc2c9be6a, 4ccd6c86-5d41-4a5a-b824-0811a085db96 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => sessionStorage.setItem("secret", secret) read: () => sessionStorage.getItem("secret") result, same first party: ebe7674a-69fc-4832-9a56-02f8d56bc38f, 013e3f1e-4627-451f-972d-0ff7f47f2150, b26c59f9-2106-4da6-95dd-ce45a7772373, 9d2d77b8-6d0c-48d2-aa5e-8ed649b348b3, 4dcad743-499b-46d2-830c-b2293f944cf3 result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => sessionStorage.setItem("secret", secret) read: () => sessionStorage.getItem("secret") result, same first party: 558455ca-ab7c-47ad-9d13-14723a3aa1c1, 2be408e8-df66-4012-b22f-675070920520, 652282fe-6f8d-4dd5-8087-c12fb99176e4, 2ff00698-f72a-443c-8ce9-bd81acea95b4, d562eddf-0239-4f80-8bbd-589eb568277b result, different first party: 558455ca-ab7c-47ad-9d13-14723a3aa1c1, 2be408e8-df66-4012-b22f-675070920520, 652282fe-6f8d-4dd5-8087-c12fb99176e4, 2ff00698-f72a-443c-8ce9-bd81acea95b4, d562eddf-0239-4f80-8bbd-589eb568277b unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => sessionStorage.setItem("secret", secret) read: () => sessionStorage.getItem("secret") result, same first party: 4a360b5f-ba1a-4cea-a8da-89bab0ffdfa6, 7d1f0819-2c2d-4dc5-8e21-0a80e95b64ee, 42d88b90-7100-40f0-bce3-4d2dfe73ff7e, a7fdeceb-0e25-44a6-b6fe-a508d7aea5b4, b7bcaa48-54f7-4f55-97d8-de76f417e955 result, different first party: Error: Failed to read the 'sessionStorage' property from 'Window': Access is denied for this document., Error: Failed to read the 'sessionStorage' property from 'Window': Access is denied for this document., Error: Failed to read the 'sessionStorage' property from 'Window': Access is denied for this document., Error: Failed to read the 'sessionStorage' property from 'Window': Access is denied for this document., Error: Failed to read the 'sessionStorage' property from 'Window': Access is denied for this document. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => sessionStorage.setItem("secret", secret) read: () => sessionStorage.getItem("secret") result, same first party: 13632dad-100d-4bbb-82ad-1f6affef616f, 32b60130-451a-4964-8bf8-84317dcba86e, 629d90d9-fabe-46dc-bd67-58812eb88f88, 0872209d-9185-4713-b394-19833302c180, 4d956e34-e340-4716-a118-e56856183614 result, different first party: 13632dad-100d-4bbb-82ad-1f6affef616f, 32b60130-451a-4964-8bf8-84317dcba86e, 629d90d9-fabe-46dc-bd67-58812eb88f88, 0872209d-9185-4713-b394-19833302c180, 4d956e34-e340-4716-a118-e56856183614 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => sessionStorage.setItem("secret", secret) read: () => sessionStorage.getItem("secret") result, same first party: 0dede2d4-0353-4d9a-a762-593ec771912e, 18f1dee3-bf30-4fa6-8487-1995537e83e7, a7e59006-e97b-4cff-a08b-ff0403ee1127, 91e7c82f-2d4b-4e6d-ab82-a0d23f579b24, cb927c30-e6d7-4338-9926-dc77e6acea4e result, different first party: 0dede2d4-0353-4d9a-a762-593ec771912e, 18f1dee3-bf30-4fa6-8487-1995537e83e7, a7e59006-e97b-4cff-a08b-ff0403ee1127, 91e7c82f-2d4b-4e6d-ab82-a0d23f579b24, cb927c30-e6d7-4338-9926-dc77e6acea4e unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => sessionStorage.setItem("secret", secret) read: () => sessionStorage.getItem("secret") result, same first party: 23f319de-831d-495d-9b96-b346f764c5d3, 14f05b3b-1b00-4eca-b1a1-3a43391d920e, cbfe5b9c-1123-4c7a-956b-231d454acbb7, 34fdb1b1-c7f6-41ba-b0a2-4bdf0d06a240, 54029316-8ea8-4ad2-ac2d-eb50d7c981d1 result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => sessionStorage.setItem("secret", secret) read: () => sessionStorage.getItem("secret") result, same first party: 16aca853-50e8-41e1-91c9-42e6b447ea0b, 1568704e-d4cd-48d5-b274-7dbd8c8c7e6a, 8c99f84e-0733-442d-bd0b-254bce33169e, 04c4a7a5-6dbe-491a-9dd2-3c538978f963, 1ea5d0ae-570c-4e85-9731-0526e3a0df65 result, different first party: 16aca853-50e8-41e1-91c9-42e6b447ea0b, 1568704e-d4cd-48d5-b274-7dbd8c8c7e6a, 8c99f84e-0733-442d-bd0b-254bce33169e, 04c4a7a5-6dbe-491a-9dd2-3c538978f963, 1ea5d0ae-570c-4e85-9731-0526e3a0df65 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => sessionStorage.setItem("secret", secret) read: () => sessionStorage.getItem("secret") result, same first party: d8fc412f-e3c8-46d9-9b44-70894a3c88bb, 41db4977-d4e9-437a-b6af-7121adad1a4d, d31c2b39-daa4-4c14-ba87-3b9a574057b8, 8379e908-5f32-490f-a01a-8cf8ccc7b509, ed6cd199-8552-42ce-8392-72f28db90cba result, different first party: Error: Failed to read the 'sessionStorage' property from 'Window': Access is denied for this document., Error: Failed to read the 'sessionStorage' property from 'Window': Access is denied for this document., Error: Failed to read the 'sessionStorage' property from 'Window': Access is denied for this document., Error: Failed to read the 'sessionStorage' property from 'Window': Access is denied for this document., Error: Failed to read the 'sessionStorage' property from 'Window': Access is denied for this document. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
window.nameThe window.name API allows websites to store data that will persist after the user has navigated the tab to a different website. This mechanism could be partitioned so that data is not allowed to persist between websites.
  write: (secret) => parent.postMessage({"write window.name": secret}) read: () => new Promise((resolve) => { parent.postMessage({"read window.name": true}, "*"); addEventListener("message", ({data}) => { resolve(data); }, { once: true }); }) result, same first party: c8e52af6-394e-4ba5-9e5a-768b2250c427, 7ac617e9-e2f8-488c-abe5-d4a86f2b2fba, 1404df63-2251-49f4-ac4c-bc952af1748f, 4b7501c2-9a6c-488c-b11a-6edd2d4d37f3, 99a93ab7-68c3-44c3-aff2-700393770f8b result, different first party: c8e52af6-394e-4ba5-9e5a-768b2250c427, 7ac617e9-e2f8-488c-abe5-d4a86f2b2fba, 1404df63-2251-49f4-ac4c-bc952af1748f, 4b7501c2-9a6c-488c-b11a-6edd2d4d37f3, 99a93ab7-68c3-44c3-aff2-700393770f8b unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => parent.postMessage({"write window.name": secret}) read: () => new Promise((resolve) => { parent.postMessage({"read window.name": true}, "*"); addEventListener("message", ({data}) => { resolve(data); }, { once: true }); }) result, same first party: 57d15629-4e8d-4236-8122-bc2699441dbb, 3fe9d13e-8755-46d2-8429-9a36af9b8a31, 110c1a21-8b0b-43be-98a3-6d7c6a7adb89, 0ca631f0-0924-46d4-89f1-8dd753849fa8, fddbc41f-7369-4847-9396-2eb671e081df result, different first party: 57d15629-4e8d-4236-8122-bc2699441dbb, 3fe9d13e-8755-46d2-8429-9a36af9b8a31, 110c1a21-8b0b-43be-98a3-6d7c6a7adb89, 0ca631f0-0924-46d4-89f1-8dd753849fa8, fddbc41f-7369-4847-9396-2eb671e081df unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => parent.postMessage({"write window.name": secret}) read: () => new Promise((resolve) => { parent.postMessage({"read window.name": true}, "*"); addEventListener("message", ({data}) => { resolve(data); }, { once: true }); }) result, same first party: acecc55e-0c38-403f-b92d-5af30acf612a, 72dce12c-80c2-4d1e-9af7-33bb86e1d8fd, b8943e54-d369-4d25-81fc-d20916423114, b5035722-831b-4b8a-880b-19a0bdeb2c84, f376eedb-a883-4ac3-a7eb-2fe3769df4b3 result, different first party: acecc55e-0c38-403f-b92d-5af30acf612a, 72dce12c-80c2-4d1e-9af7-33bb86e1d8fd, b8943e54-d369-4d25-81fc-d20916423114, b5035722-831b-4b8a-880b-19a0bdeb2c84, f376eedb-a883-4ac3-a7eb-2fe3769df4b3 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => parent.postMessage({"write window.name": secret}) read: () => new Promise((resolve) => { parent.postMessage({"read window.name": true}, "*"); addEventListener("message", ({data}) => { resolve(data); }, { once: true }); }) result, same first party: d58a44ed-765a-4364-8e8b-0817e0eb5ec3, 40fdba78-111f-43a9-8130-7021b3c60588, ed706a23-1b69-4d50-aca6-e2c3bc9041d7, 73368ce6-aa14-4622-923a-3140abe918b2, f9c5a914-2f36-4d12-a42a-d6be57549389 result, different first party: d58a44ed-765a-4364-8e8b-0817e0eb5ec3, 40fdba78-111f-43a9-8130-7021b3c60588, ed706a23-1b69-4d50-aca6-e2c3bc9041d7, 73368ce6-aa14-4622-923a-3140abe918b2, f9c5a914-2f36-4d12-a42a-d6be57549389 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => parent.postMessage({"write window.name": secret}) read: () => new Promise((resolve) => { parent.postMessage({"read window.name": true}, "*"); addEventListener("message", ({data}) => { resolve(data); }, { once: true }); }) result, same first party: 6702f336-1bd3-4e33-873d-c1f1109ad894, f7e7c7c5-21ac-47fb-a266-328b23d6b756, 872e3eaf-3210-4a01-839a-3c9640f67be3, 68dd4f2a-3b55-4f8c-bc4d-d210ad8f8eba, c024f4c5-fce3-4914-972a-3e0f82988162 result, different first party: 6702f336-1bd3-4e33-873d-c1f1109ad894, f7e7c7c5-21ac-47fb-a266-328b23d6b756, 872e3eaf-3210-4a01-839a-3c9640f67be3, 68dd4f2a-3b55-4f8c-bc4d-d210ad8f8eba, c024f4c5-fce3-4914-972a-3e0f82988162 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => parent.postMessage({"write window.name": secret}) read: () => new Promise((resolve) => { parent.postMessage({"read window.name": true}, "*"); addEventListener("message", ({data}) => { resolve(data); }, { once: true }); }) result, same first party: 38112110-ef99-4c99-933e-5018bda96f19, c6fc3aed-cc47-4cd4-b3ee-7eee6a6b2fc3, a5900671-1da4-4e1d-8a89-73903ad421bd, 18f6f36e-46ef-499c-9f3f-1eb2c483bedf, 55321559-3ea6-4886-a631-20a5c7f6f4a4 result, different first party: 38112110-ef99-4c99-933e-5018bda96f19, c6fc3aed-cc47-4cd4-b3ee-7eee6a6b2fc3, a5900671-1da4-4e1d-8a89-73903ad421bd, 18f6f36e-46ef-499c-9f3f-1eb2c483bedf, 55321559-3ea6-4886-a631-20a5c7f6f4a4 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => parent.postMessage({"write window.name": secret}) read: () => new Promise((resolve) => { parent.postMessage({"read window.name": true}, "*"); addEventListener("message", ({data}) => { resolve(data); }, { once: true }); }) result, same first party: abb7f980-2429-45ef-a355-7b9ab2fa415d, 63b995d6-b03d-4156-adc1-584b20f54156, e6ecd287-76e9-40e9-9acb-87df470b20b5, 2d9429d1-ed1e-454a-82c6-4a458391bf58, 4293188b-bd29-46d7-a33a-88c16f95bdf4 result, different first party: abb7f980-2429-45ef-a355-7b9ab2fa415d, 63b995d6-b03d-4156-adc1-584b20f54156, e6ecd287-76e9-40e9-9acb-87df470b20b5, 2d9429d1-ed1e-454a-82c6-4a458391bf58, 4293188b-bd29-46d7-a33a-88c16f95bdf4 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => parent.postMessage({"write window.name": secret}) read: () => new Promise((resolve) => { parent.postMessage({"read window.name": true}, "*"); addEventListener("message", ({data}) => { resolve(data); }, { once: true }); }) result, same first party: dfaf0d3a-3df5-4e5f-ad7a-4034a16cc25d, da10a4d6-a0b9-4f1e-8c86-e2a23b3b06cc, 2b5b28f0-e24b-4562-a5cf-115f0794b2a1, 2b69dc75-b49f-454c-a4ac-cabbc2c9be6a, 4ccd6c86-5d41-4a5a-b824-0811a085db96 result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => parent.postMessage({"write window.name": secret}) read: () => new Promise((resolve) => { parent.postMessage({"read window.name": true}, "*"); addEventListener("message", ({data}) => { resolve(data); }, { once: true }); }) result, same first party: ebe7674a-69fc-4832-9a56-02f8d56bc38f, 013e3f1e-4627-451f-972d-0ff7f47f2150, b26c59f9-2106-4da6-95dd-ce45a7772373, 9d2d77b8-6d0c-48d2-aa5e-8ed649b348b3, 4dcad743-499b-46d2-830c-b2293f944cf3 result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => parent.postMessage({"write window.name": secret}) read: () => new Promise((resolve) => { parent.postMessage({"read window.name": true}, "*"); addEventListener("message", ({data}) => { resolve(data); }, { once: true }); }) result, same first party: 558455ca-ab7c-47ad-9d13-14723a3aa1c1, 2be408e8-df66-4012-b22f-675070920520, 652282fe-6f8d-4dd5-8087-c12fb99176e4, 2ff00698-f72a-443c-8ce9-bd81acea95b4, d562eddf-0239-4f80-8bbd-589eb568277b result, different first party: 558455ca-ab7c-47ad-9d13-14723a3aa1c1, 2be408e8-df66-4012-b22f-675070920520, 652282fe-6f8d-4dd5-8087-c12fb99176e4, 2ff00698-f72a-443c-8ce9-bd81acea95b4, d562eddf-0239-4f80-8bbd-589eb568277b unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => parent.postMessage({"write window.name": secret}) read: () => new Promise((resolve) => { parent.postMessage({"read window.name": true}, "*"); addEventListener("message", ({data}) => { resolve(data); }, { once: true }); }) result, same first party: 4a360b5f-ba1a-4cea-a8da-89bab0ffdfa6, 7d1f0819-2c2d-4dc5-8e21-0a80e95b64ee, 42d88b90-7100-40f0-bce3-4d2dfe73ff7e, a7fdeceb-0e25-44a6-b6fe-a508d7aea5b4, b7bcaa48-54f7-4f55-97d8-de76f417e955 result, different first party: 4a360b5f-ba1a-4cea-a8da-89bab0ffdfa6, 7d1f0819-2c2d-4dc5-8e21-0a80e95b64ee, 42d88b90-7100-40f0-bce3-4d2dfe73ff7e, a7fdeceb-0e25-44a6-b6fe-a508d7aea5b4, b7bcaa48-54f7-4f55-97d8-de76f417e955 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => parent.postMessage({"write window.name": secret}) read: () => new Promise((resolve) => { parent.postMessage({"read window.name": true}, "*"); addEventListener("message", ({data}) => { resolve(data); }, { once: true }); }) result, same first party: 13632dad-100d-4bbb-82ad-1f6affef616f, 32b60130-451a-4964-8bf8-84317dcba86e, 629d90d9-fabe-46dc-bd67-58812eb88f88, 0872209d-9185-4713-b394-19833302c180, 4d956e34-e340-4716-a118-e56856183614 result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => parent.postMessage({"write window.name": secret}) read: () => new Promise((resolve) => { parent.postMessage({"read window.name": true}, "*"); addEventListener("message", ({data}) => { resolve(data); }, { once: true }); }) result, same first party: 0dede2d4-0353-4d9a-a762-593ec771912e, 18f1dee3-bf30-4fa6-8487-1995537e83e7, a7e59006-e97b-4cff-a08b-ff0403ee1127, 91e7c82f-2d4b-4e6d-ab82-a0d23f579b24, cb927c30-e6d7-4338-9926-dc77e6acea4e result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => parent.postMessage({"write window.name": secret}) read: () => new Promise((resolve) => { parent.postMessage({"read window.name": true}, "*"); addEventListener("message", ({data}) => { resolve(data); }, { once: true }); }) result, same first party: 23f319de-831d-495d-9b96-b346f764c5d3, 14f05b3b-1b00-4eca-b1a1-3a43391d920e, cbfe5b9c-1123-4c7a-956b-231d454acbb7, 34fdb1b1-c7f6-41ba-b0a2-4bdf0d06a240, 54029316-8ea8-4ad2-ac2d-eb50d7c981d1 result, different first party: 23f319de-831d-495d-9b96-b346f764c5d3, 14f05b3b-1b00-4eca-b1a1-3a43391d920e, cbfe5b9c-1123-4c7a-956b-231d454acbb7, 34fdb1b1-c7f6-41ba-b0a2-4bdf0d06a240, 54029316-8ea8-4ad2-ac2d-eb50d7c981d1 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => parent.postMessage({"write window.name": secret}) read: () => new Promise((resolve) => { parent.postMessage({"read window.name": true}, "*"); addEventListener("message", ({data}) => { resolve(data); }, { once: true }); }) result, same first party: 16aca853-50e8-41e1-91c9-42e6b447ea0b, 1568704e-d4cd-48d5-b274-7dbd8c8c7e6a, 8c99f84e-0733-442d-bd0b-254bce33169e, 04c4a7a5-6dbe-491a-9dd2-3c538978f963, 1ea5d0ae-570c-4e85-9731-0526e3a0df65 result, different first party: 16aca853-50e8-41e1-91c9-42e6b447ea0b, 1568704e-d4cd-48d5-b274-7dbd8c8c7e6a, 8c99f84e-0733-442d-bd0b-254bce33169e, 04c4a7a5-6dbe-491a-9dd2-3c538978f963, 1ea5d0ae-570c-4e85-9731-0526e3a0df65 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => parent.postMessage({"write window.name": secret}) read: () => new Promise((resolve) => { parent.postMessage({"read window.name": true}, "*"); addEventListener("message", ({data}) => { resolve(data); }, { once: true }); }) result, same first party: d8fc412f-e3c8-46d9-9b44-70894a3c88bb, 41db4977-d4e9-437a-b6af-7121adad1a4d, d31c2b39-daa4-4c14-ba87-3b9a574057b8, 8379e908-5f32-490f-a01a-8cf8ccc7b509, ed6cd199-8552-42ce-8392-72f28db90cba result, different first party: d8fc412f-e3c8-46d9-9b44-70894a3c88bb, 41db4977-d4e9-437a-b6af-7121adad1a4d, d31c2b39-daa4-4c14-ba87-3b9a574057b8, 8379e908-5f32-490f-a01a-8cf8ccc7b509, ed6cd199-8552-42ce-8392-72f28db90cba unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
HTTPS testsHTTPS is the protocol that web browsers use to connect securely to websites. When HTTPS is being used, the connection is encrypted so that third parties on the network cannot read content being sent between the server and your browser. In the past, insecure connections were the default and websites would need to actively request that a browser use HTTPS. Now the status quo is shifting, and browser makers are moving toward a world where HTTPS is the default protocol.
Insecure websiteChecks to see if the browser stops loading an insecure website and warns the user before giving them the option to continue. Known as HTTPS-Only Mode in some browsers.
  passed: false,false,false,false,false result: Insecure website loaded,Insecure website loaded,Insecure website loaded,Insecure website loaded,Insecure website loaded
  passed: false,false,false,false,false result: Insecure website loaded,Insecure website loaded,Insecure website loaded,Insecure website loaded,Insecure website loaded
  passed: false,false,false,false,false result: Insecure website loaded,Insecure website loaded,Insecure website loaded,Insecure website loaded,Insecure website loaded
  passed: false,false,false,false,false result: Insecure website loaded,Insecure website loaded,Insecure website loaded,Insecure website loaded,Insecure website loaded
  passed: false,false,false,false,false result: Insecure website loaded,Insecure website loaded,Insecure website loaded,Insecure website loaded,Insecure website loaded
  passed: false,false,false,false,false result: Insecure website loaded,Insecure website loaded,Insecure website loaded,Insecure website loaded,Insecure website loaded
  passed: false,false,false,false,false result: Insecure website loaded,Insecure website loaded,Insecure website loaded,Insecure website loaded,Insecure website loaded
  passed: false,false,false,false,false result: Insecure website loaded,Insecure website loaded,Insecure website loaded,Insecure website loaded,Insecure website loaded
  passed: false,false,false,false,false result: Insecure website loaded,Insecure website loaded,Insecure website loaded,Insecure website loaded,Insecure website loaded
  passed: false,false,false,false,false result: Insecure website loaded,Insecure website loaded,Insecure website loaded,Insecure website loaded,Insecure website loaded
  passed: false,false,false,false,false result: Insecure website loaded,Insecure website loaded,Insecure website loaded,Insecure website loaded,Insecure website loaded
  passed: false,false,false,false,false result: Insecure website loaded,Insecure website loaded,Insecure website loaded,Insecure website loaded,Insecure website loaded
  passed: false,false,false,false,false result: Insecure website loaded,Insecure website loaded,Insecure website loaded,Insecure website loaded,Insecure website loaded
  passed: false,false,false,false,false result: Insecure website loaded,Insecure website loaded,Insecure website loaded,Insecure website loaded,Insecure website loaded
  passed: false,false,false,false,false result: Insecure website loaded,Insecure website loaded,Insecure website loaded,Insecure website loaded,Insecure website loaded
  passed: false,false,false,false,false result: Insecure website loaded,Insecure website loaded,Insecure website loaded,Insecure website loaded,Insecure website loaded
Upgradable addressChecks to see if an insecure address entered into the browser's address bar is upgraded to HTTPS whenever possible.
  upgraded: false,false,false,false,false passed: false,false,false,false,false
  upgraded: false,false,false,false,false passed: false,false,false,false,false
  upgraded: false,false,false,false,false passed: false,false,false,false,false
  upgraded: false,false,false,false,false passed: false,false,false,false,false
  upgraded: false,false,false,false,false passed: false,false,false,false,false
  upgraded: false,false,false,false,false passed: false,false,false,false,false
  upgraded: false,false,false,false,false passed: false,false,false,false,false
  upgraded: false,false,false,false,false passed: false,false,false,false,false
  upgraded: true,true,true,true,true passed: true,true,true,true,true
  upgraded: false,false,false,false,false passed: false,false,false,false,false
  upgraded: false,false,false,false,false passed: false,false,false,false,false
  upgraded: false,false,false,false,false passed: false,false,false,false,false
  upgraded: false,false,false,false,false passed: false,false,false,false,false
  upgraded: true,true,true,true,true passed: true,true,true,true,true
  upgraded: false,false,false,false,false passed: false,false,false,false,false
  upgraded: false,false,false,false,false passed: false,false,false,false,false
Upgradable hyperlinkChecks to see if the user has clicked on a hyperlink to an insecure address, if the browser upgrades that address to HTTPS whenever possible.
  upgraded: false,false,false,false,false passed: false,false,false,false,false
  upgraded: false,false,false,false,false passed: false,false,false,false,false
  upgraded: false,false,false,false,false passed: false,false,false,false,false
  upgraded: false,false,false,false,false passed: false,false,false,false,false
  upgraded: false,false,false,false,false passed: false,false,false,false,false
  upgraded: false,false,false,false,false passed: false,false,false,false,false
  upgraded: false,false,false,false,false passed: false,false,false,false,false
  upgraded: false,false,false,false,false passed: false,false,false,false,false
  upgraded: true,true,true,true,true passed: true,true,true,true,true
  upgraded: false,false,false,false,false passed: false,false,false,false,false
  upgraded: false,false,false,false,false passed: false,false,false,false,false
  upgraded: false,false,false,false,false passed: false,false,false,false,false
  upgraded: false,false,false,false,false passed: false,false,false,false,false
  upgraded: true,true,false,true,true passed: true,true,false,true,true
  upgraded: false,false,false,false,false passed: false,false,false,false,false
  upgraded: false,false,false,false,false passed: false,false,false,false,false
Upgradable imageChecks to see if the browser attempts to upgrade an insecure address for an image to HTTPS whenever possible.
  passed: true,true,true,true,true result: upgraded,upgraded,upgraded,upgraded,upgraded
  passed: true,true,true,true,true result: upgraded,upgraded,upgraded,upgraded,upgraded
  passed: true,true,true,true,true result: upgraded,upgraded,upgraded,upgraded,upgraded
  passed: true,true,true,true,true result: upgraded,upgraded,upgraded,upgraded,upgraded
  passed: true,true,true,true,true result: upgraded,upgraded,upgraded,upgraded,upgraded
  passed: true,true,true,true,true result: upgraded,upgraded,upgraded,upgraded,upgraded
  passed: true,true,true,true,true result: upgraded,upgraded,upgraded,upgraded,upgraded
  passed: false,false,false,false,false result: loaded insecurely,loaded insecurely,loaded insecurely,loaded insecurely,loaded insecurely
  passed: false,false,false,false,false result: loaded insecurely,loaded insecurely,loaded insecurely,loaded insecurely,loaded insecurely
  passed: true,true,true,true,true result: upgraded,upgraded,upgraded,upgraded,upgraded
  passed: true,true,true,true,true result: upgraded,upgraded,upgraded,upgraded,upgraded
  passed: false,false,false,false,false result: loaded insecurely,loaded insecurely,loaded insecurely,loaded insecurely,loaded insecurely
  passed: false,false,false,false,false result: loaded insecurely,loaded insecurely,loaded insecurely,loaded insecurely,loaded insecurely
  passed: false,false,false,false,false result: loaded insecurely,loaded insecurely,loaded insecurely,loaded insecurely,loaded insecurely
  passed: true,true,true,true,true result: upgraded,upgraded,upgraded,upgraded,upgraded
  passed: true,true,true,true,true result: upgraded,upgraded,upgraded,upgraded,upgraded
Upgradable scriptChecks to see if the browser attempts to upgrade an insecure address for an script to HTTPS whenever possible.
  passed: true,true,true,true,true result: blocked,blocked,blocked,blocked,blocked
  passed: true,true,true,true,true result: blocked,blocked,blocked,blocked,blocked
  passed: true,true,true,true,true result: blocked,blocked,blocked,blocked,blocked
  passed: true,true,true,true,true result: blocked,blocked,blocked,blocked,blocked
  passed: true,true,true,true,true result: blocked,blocked,blocked,blocked,blocked
  passed: true,true,true,true,true result: blocked,blocked,blocked,blocked,blocked
  passed: true,true,true,true,true result: blocked,blocked,blocked,blocked,blocked
  passed: true,true,true,true,true result: blocked,blocked,blocked,blocked,blocked
  passed: true,true,true,true,true result: blocked,blocked,blocked,blocked,blocked
  passed: true,true,true,true,true result: blocked,blocked,blocked,blocked,blocked
  passed: true,true,true,true,true result: blocked,blocked,blocked,blocked,blocked
  passed: true,true,true,true,true result: blocked,blocked,blocked,blocked,blocked
  passed: true,true,true,true,true result: blocked,blocked,blocked,blocked,blocked
  passed: true,true,true,true,true result: blocked,blocked,blocked,blocked,blocked
  passed: true,true,true,true,true result: blocked,blocked,blocked,blocked,blocked
  passed: true,true,true,true,true result: blocked,blocked,blocked,blocked,blocked
Misc testsThis category includes tests for the presence of miscellaneous privacy features.
GPC enabledThe Global Privacy Control is an HTTP header that can be sent by a browser to instruct a website not to sell the user's personal data to third parties. This test checks to see if the GPC header is sent by default.
  sec-gpc: 1 passed: true,true,true,true,true
  sec-gpc: 1 passed: true,true,true,true,true
  sec-gpc: 1 passed: true,true,true,true,true
  passed: false,false,false,false,false
  passed: false,false,false,false,false
  passed: false,false,false,false,false
  passed: false,false,false,false,false
  passed: false,false,false,false,false
  passed: false,false,false,false,false
  passed: false,false,false,false,false
  passed: false,false,false,false,false
  passed: false,false,false,false,false
  passed: false,false,false,false,false
  passed: false,false,false,false,false
  passed: false,false,false,false,false
  passed: false,false,false,false,false
IP address leakIP addresses can be used to uniquely identify a large percentage of users. A proxy, VPN, or Tor can mask a user's IP address.
  passed: false,false,false,false,false
  passed: false,false,false,false,false
  passed: true,true,true,true,true
  passed: false,false,false,false,false
  passed: false,false,false,false,false
  passed: false,false,false,false,false
  passed: false,false,false,false,false
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  passed: false,false,false,false,false
  passed: false,false,false,false,false
  passed: false,false,false,false,false
  passed: false,false,false,false,false
  passed: true,true,true,true,true
  passed: false,false,false,false,false
  passed: false,false,false,false,false
Stream isolationBrowsers that use Tor can use a different Tor circuit per top-level website.
write: () => { if (!usingTor) { throw new Error("Unsupported"); } } read: async () => { if (usingTor) { return ipAddress; } else { throw new Error("Unsupported"); } } unsupported: true,true,true,true,true readSameFirstParty: Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported readDifferentFirstParty: Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported testFailed: false,false,false,false,false
write: () => { if (!usingTor) { throw new Error("Unsupported"); } } read: async () => { if (usingTor) { return ipAddress; } else { throw new Error("Unsupported"); } } unsupported: true,true,true,true,true readSameFirstParty: Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported readDifferentFirstParty: Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported testFailed: false,false,false,false,false
  write: () => { if (!usingTor) { throw new Error("Unsupported"); } } read: async () => { if (usingTor) { return ipAddress; } else { throw new Error("Unsupported"); } } unsupported: false,false,false,false,false readSameFirstParty: 5.183.209.217,45.61.186.225,185.56.80.65,94.230.208.148,185.220.101.35 readDifferentFirstParty: 5.183.209.217,45.61.186.225,185.56.80.65,94.230.208.148,185.220.101.35 passed: false,false,false,false,false testFailed: false,false,false,false,false
write: () => { if (!usingTor) { throw new Error("Unsupported"); } } read: async () => { if (usingTor) { return ipAddress; } else { throw new Error("Unsupported"); } } unsupported: true,true,true,true,true readSameFirstParty: Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported readDifferentFirstParty: Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported testFailed: false,false,false,false,false
write: () => { if (!usingTor) { throw new Error("Unsupported"); } } read: async () => { if (usingTor) { return ipAddress; } else { throw new Error("Unsupported"); } } unsupported: true,true,true,true,true readSameFirstParty: Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported readDifferentFirstParty: Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported testFailed: false,false,false,false,false
write: () => { if (!usingTor) { throw new Error("Unsupported"); } } read: async () => { if (usingTor) { return ipAddress; } else { throw new Error("Unsupported"); } } unsupported: true,true,true,true,true readSameFirstParty: Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported readDifferentFirstParty: Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported testFailed: false,false,false,false,false
write: () => { if (!usingTor) { throw new Error("Unsupported"); } } read: async () => { if (usingTor) { return ipAddress; } else { throw new Error("Unsupported"); } } unsupported: true,true,true,true,true readSameFirstParty: Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported readDifferentFirstParty: Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported testFailed: false,false,false,false,false
write: () => { if (!usingTor) { throw new Error("Unsupported"); } } read: async () => { if (usingTor) { return ipAddress; } else { throw new Error("Unsupported"); } } unsupported: true,true,true,true,true readSameFirstParty: Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported readDifferentFirstParty: Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported testFailed: false,false,false,false,false
write: () => { if (!usingTor) { throw new Error("Unsupported"); } } read: async () => { if (usingTor) { return ipAddress; } else { throw new Error("Unsupported"); } } unsupported: true,true,true,true,true readSameFirstParty: Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported readDifferentFirstParty: Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported testFailed: false,false,false,false,false
write: () => { if (!usingTor) { throw new Error("Unsupported"); } } read: async () => { if (usingTor) { return ipAddress; } else { throw new Error("Unsupported"); } } unsupported: true,true,true,true,true readSameFirstParty: Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported readDifferentFirstParty: Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported testFailed: false,false,false,false,false
write: () => { if (!usingTor) { throw new Error("Unsupported"); } } read: async () => { if (usingTor) { return ipAddress; } else { throw new Error("Unsupported"); } } unsupported: true,true,true,true,true readSameFirstParty: Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported readDifferentFirstParty: Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported testFailed: false,false,false,false,false
write: () => { if (!usingTor) { throw new Error("Unsupported"); } } read: async () => { if (usingTor) { return ipAddress; } else { throw new Error("Unsupported"); } } unsupported: true,true,true,true,true readSameFirstParty: Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported readDifferentFirstParty: Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported testFailed: false,false,false,false,false
write: () => { if (!usingTor) { throw new Error("Unsupported"); } } read: async () => { if (usingTor) { return ipAddress; } else { throw new Error("Unsupported"); } } unsupported: true,true,true,true,true readSameFirstParty: Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported readDifferentFirstParty: Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported testFailed: false,false,false,false,false
  write: () => { if (!usingTor) { throw new Error("Unsupported"); } } read: async () => { if (usingTor) { return ipAddress; } else { throw new Error("Unsupported"); } } unsupported: false,false,false,false,false readSameFirstParty: 2a0b:f4c0:16c:4::1,2605:6400:20:5ef::,179.43.187.138,199.195.248.29,2a0b:f4c0:16c:14::1 readDifferentFirstParty: 95.214.54.97,2620:7:6001::ffff:c759:e642,2a0b:f4c2::10,45.144.225.119,94.140.114.213 passed: true,true,true,true,true testFailed: false,false,false,false,false
write: () => { if (!usingTor) { throw new Error("Unsupported"); } } read: async () => { if (usingTor) { return ipAddress; } else { throw new Error("Unsupported"); } } unsupported: true,true,true,true,true readSameFirstParty: Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported readDifferentFirstParty: Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported testFailed: false,false,false,false,false
write: () => { if (!usingTor) { throw new Error("Unsupported"); } } read: async () => { if (usingTor) { return ipAddress; } else { throw new Error("Unsupported"); } } unsupported: true,true,true,true,true readSameFirstParty: Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported readDifferentFirstParty: Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported,Error: Unsupported testFailed: false,false,false,false,false
Tor enabledThe Tor network sends the browser's web requests through a series of relays to hide a user's IP address, thereby helping to mask their identity and location. This test checks to see if the Tor network is being used by default.
  IsTorExit: false,false,false,false,false passed: false,false,false,false,false
  IsTorExit: false,false,false,false,false passed: false,false,false,false,false
  IsTorExit: true,true,true,true,true passed: true,true,true,true,true
  IsTorExit: false,false,false,false,false passed: false,false,false,false,false
  IsTorExit: false,false,false,false,false passed: false,false,false,false,false
  IsTorExit: false,false,false,false,false passed: false,false,false,false,false
  IsTorExit: false,false,false,false,false passed: false,false,false,false,false
  IsTorExit: false,false,false,false,false passed: false,false,false,false,false
  IsTorExit: false,false,false,false,false passed: false,false,false,false,false
  IsTorExit: false,false,false,false,false passed: false,false,false,false,false
  IsTorExit: false,false,false,false,false passed: false,false,false,false,false
  IsTorExit: false,false,false,false,false passed: false,false,false,false,false
  IsTorExit: false,false,false,false,false passed: false,false,false,false,false
  IsTorExit: true,true,true,true,true passed: true,true,true,true,true
  IsTorExit: false,false,false,false,false passed: false,false,false,false,false
  IsTorExit: false,false,false,false,false passed: false,false,false,false,false
Fingerprinting resistance testsFingerprinting is a technique trackers use to uniquely identify you as you browse the web. A fingerprinting script will measure several characteristics of your browser and, combining this data, will build a fingerprint that may uniquely identify you among web users. Browsers can introduce countermeasures, such as minimizing the distinguishing information disclosed by certain web APIs so your browser is harder to pick out from the crowd (so-called 'fingerprinting resistance').
Media query screen heightHeight of the user's screen in pixels.
  expression: undefined desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 781,781,781,781,781 passed: false,false,false,false,false
  expression: undefined desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 781,781,781,781,781 passed: false,false,false,false,false
  expression: undefined desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 781,781,781,781,781 passed: false,false,false,false,false
  expression: undefined desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 1336,1336,1336,1336,1336 passed: false,false,false,false,false
  expression: undefined desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 1336,1336,1336,1336,1336 passed: false,false,false,false,false
  expression: undefined desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 900,900,900,900,900 passed: false,false,false,false,false
  expression: undefined desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 900,900,900,900,900 passed: false,false,false,false,false
  expression: undefined desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 983,983,983,983,983 passed: false,false,false,false,false
  expression: undefined desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 983,983,983,983,983 passed: false,false,false,false,false
  expression: undefined desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 1341,0,1341,1341,1341 passed: false,false,false,false,false
  expression: undefined desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 1341,1341,1341,1341,1341 passed: false,false,false,false,false
  expression: undefined desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 860,860,860,860,860 passed: false,false,false,false,false
  expression: undefined desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 860,860,860,860,860 passed: false,false,false,false,false
  expression: undefined desired expression: innerHeight actual value: 1000,1000,1000,1000,1000 desired value: 1000,1000,1000,1000,1000 passed: true,true,true,true,true
  expression: undefined desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 988,988,988,988,988 passed: false,false,false,false,false
  expression: undefined desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 988,988,988,988,988 passed: false,false,false,false,false
Media query screen widthWidth of the user's screen in pixels.
  expression: undefined desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 2114,2114,2114,2114,2114 passed: false,false,false,false,false
  expression: undefined desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 2114,2114,2114,2114,2114 passed: false,false,false,false,false
  expression: undefined desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 2114,2114,2114,2114,2114 passed: false,false,false,false,false
  expression: undefined desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 2560,2560,2560,2560,2560 passed: true,true,true,true,true
  expression: undefined desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 2560,2560,2560,2560,2560 passed: true,true,true,true,true
  expression: undefined desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 1607,1607,1607,1607,1607 passed: false,false,false,false,false
  expression: undefined desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 1607,1607,1607,1607,1607 passed: false,false,false,false,false
  expression: undefined desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 1280,1280,1280,1280,1280 passed: false,false,false,false,false
  expression: undefined desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 1280,1280,1280,1280,1280 passed: false,false,false,false,false
  expression: undefined desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 1240,0,1240,1240,1240 passed: false,false,false,false,false
  expression: undefined desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 1240,1240,1240,1240,1240 passed: false,false,false,false,false
  expression: undefined desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 1324,1324,1324,1324,1324 passed: false,false,false,false,false
  expression: undefined desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 1324,1324,1324,1324,1324 passed: false,false,false,false,false
  expression: undefined desired expression: innerWidth actual value: 1000,1000,1000,1000,1000 desired value: 1000,1000,1000,1000,1000 passed: true,true,true,true,true
  expression: undefined desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 1306,1306,1306,1306,1306 passed: false,false,false,false,false
  expression: undefined desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 1306,1306,1306,1306,1306 passed: false,false,false,false,false
outerHeightHeight of the browser window in pixels, including browser chrome.
  expression: outerHeight desired expression: innerHeight actual value: 856,856,856,856,856 desired value: 781,781,781,781,781 passed: false,false,false,false,false
  expression: outerHeight desired expression: innerHeight actual value: 856,856,856,856,856 desired value: 781,781,781,781,781 passed: false,false,false,false,false
  expression: outerHeight desired expression: innerHeight actual value: 856,856,856,856,856 desired value: 781,781,781,781,781 passed: false,false,false,false,false
  expression: outerHeight desired expression: innerHeight actual value: 1415,1415,1415,1415,1415 desired value: 1336,1336,1336,1336,1336 passed: false,false,false,false,false
  expression: outerHeight desired expression: innerHeight actual value: 1415,1415,1415,1415,1415 desired value: 1336,1336,1336,1336,1336 passed: false,false,false,false,false
  expression: outerHeight desired expression: innerHeight actual value: 979,979,979,979,979 desired value: 900,900,900,900,900 passed: false,false,false,false,false
  expression: outerHeight desired expression: innerHeight actual value: 979,979,979,979,979 desired value: 900,900,900,900,900 passed: false,false,false,false,false
  expression: outerHeight desired expression: innerHeight actual value: 1068,1068,1068,1068,1068 desired value: 983,983,983,983,983 passed: false,false,false,false,false
  expression: outerHeight desired expression: innerHeight actual value: 1068,1068,1068,1068,1068 desired value: 983,983,983,983,983 passed: false,false,false,false,false
  expression: outerHeight desired expression: innerHeight actual value: 1415,1415,1415,1415,1415 desired value: 1341,0,1341,1341,1341 passed: false,false,false,false,false
  expression: outerHeight desired expression: innerHeight actual value: 1415,1415,1415,1415,1415 desired value: 1341,1341,1341,1341,1341 passed: false,false,false,false,false
  expression: outerHeight desired expression: innerHeight actual value: 940,940,940,940,940 desired value: 860,860,860,860,860 passed: false,false,false,false,false
  expression: outerHeight desired expression: innerHeight actual value: 940,940,940,940,940 desired value: 860,860,860,860,860 passed: false,false,false,false,false
  expression: outerHeight desired expression: innerHeight actual value: 1000,1000,1000,1000,1000 desired value: 1000,1000,1000,1000,1000 passed: true,true,true,true,true
  expression: outerHeight desired expression: innerHeight actual value: 1081,1081,1081,1081,1081 desired value: 988,988,988,988,988 passed: false,false,false,false,false
  expression: outerHeight desired expression: innerHeight actual value: 1081,1081,1081,1081,1081 desired value: 988,988,988,988,988 passed: false,false,false,false,false
screen.heightHeight of the user's screen, in pixels.
  expression: screen.height desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 781,781,781,781,781 passed: false,false,false,false,false
  expression: screen.height desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 781,781,781,781,781 passed: false,false,false,false,false
  expression: screen.height desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 781,781,781,781,781 passed: false,false,false,false,false
  expression: screen.height desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 1336,1336,1336,1336,1336 passed: false,false,false,false,false
  expression: screen.height desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 1336,1336,1336,1336,1336 passed: false,false,false,false,false
  expression: screen.height desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 900,900,900,900,900 passed: false,false,false,false,false
  expression: screen.height desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 900,900,900,900,900 passed: false,false,false,false,false
  expression: screen.height desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 983,983,983,983,983 passed: false,false,false,false,false
  expression: screen.height desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 983,983,983,983,983 passed: false,false,false,false,false
  expression: screen.height desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 1341,0,1341,1341,1341 passed: false,false,false,false,false
  expression: screen.height desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 1341,1341,1341,1341,1341 passed: false,false,false,false,false
  expression: screen.height desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 860,860,860,860,860 passed: false,false,false,false,false
  expression: screen.height desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 860,860,860,860,860 passed: false,false,false,false,false
  expression: screen.height desired expression: innerHeight actual value: 1000,1000,1000,1000,1000 desired value: 1000,1000,1000,1000,1000 passed: true,true,true,true,true
  expression: screen.height desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 988,988,988,988,988 passed: false,false,false,false,false
  expression: screen.height desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 988,988,988,988,988 passed: false,false,false,false,false
screen.widthWidth of the user's screen, in pixels.
  expression: screen.width desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 2114,2114,2114,2114,2114 passed: false,false,false,false,false
  expression: screen.width desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 2114,2114,2114,2114,2114 passed: false,false,false,false,false
  expression: screen.width desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 2114,2114,2114,2114,2114 passed: false,false,false,false,false
  expression: screen.width desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 2560,2560,2560,2560,2560 passed: true,true,true,true,true
  expression: screen.width desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 2560,2560,2560,2560,2560 passed: true,true,true,true,true
  expression: screen.width desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 1607,1607,1607,1607,1607 passed: false,false,false,false,false
  expression: screen.width desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 1607,1607,1607,1607,1607 passed: false,false,false,false,false
  expression: screen.width desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 1280,1280,1280,1280,1280 passed: false,false,false,false,false
  expression: screen.width desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 1280,1280,1280,1280,1280 passed: false,false,false,false,false
  expression: screen.width desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 1240,0,1240,1240,1240 passed: false,false,false,false,false
  expression: screen.width desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 1240,1240,1240,1240,1240 passed: false,false,false,false,false
  expression: screen.width desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 1324,1324,1324,1324,1324 passed: false,false,false,false,false
  expression: screen.width desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 1324,1324,1324,1324,1324 passed: false,false,false,false,false
  expression: screen.width desired expression: innerWidth actual value: 1000,1000,1000,1000,1000 desired value: 1000,1000,1000,1000,1000 passed: true,true,true,true,true
  expression: screen.width desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 1306,1306,1306,1306,1306 passed: false,false,false,false,false
  expression: screen.width desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 1306,1306,1306,1306,1306 passed: false,false,false,false,false
screenXPosition, in pixels, of the left edge of the browser window on screen.
  expression: screenX desired expression: 0 actual value: 22,0,0,0,0 desired value: 0,0,0,0,0 passed: false,true,true,true,true
  expression: screenX desired expression: 0 actual value: 0,0,0,0,199 desired value: 0,0,0,0,0 passed: true,true,true,true,false
  expression: screenX desired expression: 0 actual value: 0,0,137,0,200 desired value: 0,0,0,0,0 passed: true,true,false,true,false
  expression: screenX desired expression: 0 actual value: 2560,2560,2560,2560,2560 desired value: 0,0,0,0,0 passed: false,false,false,false,false
  expression: screenX desired expression: 0 actual value: 2560,2560,2560,2560,2560 desired value: 0,0,0,0,0 passed: false,false,false,false,false
  expression: screenX desired expression: 0 actual value: 2773,2773,2773,2773,2773 desired value: 0,0,0,0,0 passed: false,false,false,false,false
  expression: screenX desired expression: 0 actual value: 2773,2773,2773,2773,2773 desired value: 0,0,0,0,0 passed: false,false,false,false,false
  expression: screenX desired expression: 0 actual value: 4,4,4,4,4 desired value: 0,0,0,0,0 passed: false,false,false,false,false
  expression: screenX desired expression: 0 actual value: 4,4,4,4,4 desired value: 0,0,0,0,0 passed: false,false,false,false,false
  expression: screenX desired expression: 0 actual value: 383,383,383,383,383 desired value: 0,0,0,0,0 passed: false,false,false,false,false
  expression: screenX desired expression: 0 actual value: 403,403,403,403,403 desired value: 0,0,0,0,0 passed: false,false,false,false,false
  expression: screenX desired expression: 0 actual value: 0,2560,2560,2560,2560 desired value: 0,0,0,0,0 passed: true,false,false,false,false
  expression: screenX desired expression: 0 actual value: 2649,2649,2649,2649,2649 desired value: 0,0,0,0,0 passed: false,false,false,false,false
  expression: screenX desired expression: 0 actual value: 0,0,0,0,0 desired value: 0,0,0,0,0 passed: true,true,true,true,true
  expression: screenX desired expression: 0 actual value: 2873,2873,2873,2873,2873 desired value: 0,0,0,0,0 passed: false,false,false,false,false
  expression: screenX desired expression: 0 actual value: 2873,2873,2873,2873,2873 desired value: 0,0,0,0,0 passed: false,false,false,false,false
screenYPosition, in pixels, of the top edge of the browser window on screen.
  expression: screenY desired expression: 0 actual value: 187,165,165,165,165 desired value: 0,0,0,0,0 passed: false,false,false,false,false
  expression: screenY desired expression: 0 actual value: 165,165,165,165,147 desired value: 0,0,0,0,0 passed: false,false,false,false,false
  expression: screenY desired expression: 0 actual value: 165,165,164,165,214 desired value: 0,0,0,0,0 passed: false,false,false,false,false
  expression: screenY desired expression: 0 actual value: 25,25,25,25,25 desired value: 0,0,0,0,0 passed: false,false,false,false,false
  expression: screenY desired expression: 0 actual value: 25,25,25,25,25 desired value: 0,0,0,0,0 passed: false,false,false,false,false
  expression: screenY desired expression: 0 actual value: 116,116,116,116,116 desired value: 0,0,0,0,0 passed: false,false,false,false,false
  expression: screenY desired expression: 0 actual value: 116,116,116,116,116 desired value: 0,0,0,0,0 passed: false,false,false,false,false
  expression: screenY desired expression: 0 actual value: 25,25,25,25,25 desired value: 0,0,0,0,0 passed: false,false,false,false,false
  expression: screenY desired expression: 0 actual value: 25,25,25,25,25 desired value: 0,0,0,0,0 passed: false,false,false,false,false
  expression: screenY desired expression: 0 actual value: 25,25,25,25,25 desired value: 0,0,0,0,0 passed: false,false,false,false,false
  expression: screenY desired expression: 0 actual value: 25,25,25,25,25 desired value: 0,0,0,0,0 passed: false,false,false,false,false
  expression: screenY desired expression: 0 actual value: 137,137,137,137,137 desired value: 0,0,0,0,0 passed: false,false,false,false,false
  expression: screenY desired expression: 0 actual value: 171,171,171,171,171 desired value: 0,0,0,0,0 passed: false,false,false,false,false
  expression: screenY desired expression: 0 actual value: 0,0,0,0,0 desired value: 0,0,0,0,0 passed: true,true,true,true,true
  expression: screenY desired expression: 0 actual value: 171,171,171,171,171 desired value: 0,0,0,0,0 passed: false,false,false,false,false
  expression: screenY desired expression: 0 actual value: 171,171,171,171,171 desired value: 0,0,0,0,0 passed: false,false,false,false,false
System font detectionWeb pages can detect the presence of a font installed on the user's system. The presence or absence of various fonts is commonly used to fingerprint users.
  expression: undefined desired expression: undefined actual value: undefined desired value: undefined passed: false,false,false,false,false
  expression: undefined desired expression: undefined actual value: undefined desired value: undefined passed: false,false,false,false,false
  expression: undefined desired expression: undefined actual value: undefined desired value: undefined passed: false,false,false,false,false
  expression: undefined desired expression: undefined actual value: undefined desired value: undefined passed: false,false,false,false,false
  expression: undefined desired expression: undefined actual value: undefined desired value: undefined passed: false,false,false,false,false
  expression: undefined desired expression: undefined actual value: undefined desired value: undefined passed: false,false,false,false,false
  expression: undefined desired expression: undefined actual value: undefined desired value: undefined passed: false,false,false,false,false
  expression: undefined desired expression: undefined actual value: undefined desired value: undefined passed: false,false,false,false,false
  expression: undefined desired expression: undefined actual value: undefined desired value: undefined passed: false,false,false,false,false
  expression: undefined desired expression: undefined actual value: undefined desired value: undefined passed: false,false,false,false,false
  expression: undefined desired expression: undefined actual value: undefined desired value: undefined passed: false,false,false,false,false
  expression: undefined desired expression: undefined actual value: undefined desired value: undefined passed: true,true,true,true,true
  expression: undefined desired expression: undefined actual value: undefined desired value: undefined passed: true,true,true,true,true
  expression: undefined desired expression: undefined actual value: undefined desired value: undefined passed: true,true,true,true,true
  expression: undefined desired expression: undefined actual value: undefined desired value: undefined passed: false,false,false,false,false
  expression: undefined desired expression: undefined actual value: undefined desired value: undefined passed: false,false,false,false,false
Tracking query parameter testsWhen you browse from one web page to another, tracking companies will frequently attach a 'tracking query parameter' to the address of the second web page. That query parameter may contain a unique identifier that tracks you individually as you browse the web. And these query parameters are frequently synchronized with cookies, making them a powerful tracking vector. Web browsers can protect you from known tracking query parameters by stripping them from web addresses before your browser sends them. (The set of tracking query parameters tested here was largely borrowed from Brave.)
__hsfpHubSpot tracking parameter
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
__hsscHubSpot tracking parameter
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
__hstcHubSpot tracking parameter
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
__sDrip.com email address tracking parameter
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
_hsencHubSpot tracking parameter
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
_openstatYandex tracking parameter
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
dclidDoubleClick Click ID (Google)
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
fbclidFacebook Click Identifier
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
gclidGoogle Click Identifier
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
hsCtaTrackingHubSpot tracking parameter
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
igshidInstagram tracking parameter
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
mc_eidMailchimp Email ID (email recipient's address)
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
mkt_tokAdobe Marketo tracking parameter
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
ml_subscriberMailerLite email tracking
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
ml_subscriber_hashMailerLite email tracking
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
msclkidMicrosoft Click ID
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
oly_anon_idOmeda marketing 'anonymous' customer id
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
oly_enc_idOmeda marketing 'known' customer id
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
rb_clickidUnknown high-entropy tracking parameter
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
s_cidAdobe Site Catalyst tracking parameter
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
vero_convVero tracking parameter
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
vero_idVero tracking parameter
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
wickedidWicked Reports e-commerce tracking
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
yclidYandex Click ID
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  passed: true,true,true,true,true
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
  value: 38591357834007045 passed: false,false,false,false,false
Tracker content blockingWhen you visit a web page, it frequently has third-party embedded tracking content, such as scripts and tracking pixels. These embedded components spy on you. Some browsers and browser extensions maintain list of tracking companies and block their content from being loaded. This section checks to see if a browser blocks 20 of the largest trackers, as reported by https://whotracks.me.
AdobeTests whether the browser blocks the page from loading the tracker at https://munchkin.marketo.net/munchkin.js
  url: https://munchkin.marketo.net/munchkin.js passed: true,true,true,true,true
  url: https://munchkin.marketo.net/munchkin.js passed: true,true,true,true,true
  url: https://munchkin.marketo.net/munchkin.js passed: true,true,true,true,true
  url: https://munchkin.marketo.net/munchkin.js passed: false,false,false,false,false
  url: https://munchkin.marketo.net/munchkin.js passed: false,false,false,false,false
  url: https://munchkin.marketo.net/munchkin.js passed: false,false,false,false,false
  url: https://munchkin.marketo.net/munchkin.js passed: false,false,false,false,false
  url: https://munchkin.marketo.net/munchkin.js passed: false,false,false,false,false
  url: https://munchkin.marketo.net/munchkin.js passed: true,true,true,true,true
  url: https://munchkin.marketo.net/munchkin.js passed: false,false,false,false,false
  url: https://munchkin.marketo.net/munchkin.js passed: false,false,false,false,false
  url: https://munchkin.marketo.net/munchkin.js passed: false,false,false,false,false
  url: https://munchkin.marketo.net/munchkin.js passed: false,false,false,false,false
  url: https://munchkin.marketo.net/munchkin.js passed: false,false,false,false,false
  url: https://munchkin.marketo.net/munchkin.js passed: false,false,false,false,false
  url: https://munchkin.marketo.net/munchkin.js passed: false,false,false,false,false
Amazon adsystemTests whether the browser blocks the page from loading the tracker at https://aax-us-east.amazon-adsystem.com/x/px
  url: https://aax-us-east.amazon-adsystem.com/x/px passed: true,true,true,true,true
  url: https://aax-us-east.amazon-adsystem.com/x/px passed: true,true,true,true,true
  url: https://aax-us-east.amazon-adsystem.com/x/px passed: true,true,true,true,true
  url: https://aax-us-east.amazon-adsystem.com/x/px passed: false,false,false,false,false
  url: https://aax-us-east.amazon-adsystem.com/x/px passed: false,false,false,false,false
  url: https://aax-us-east.amazon-adsystem.com/x/px passed: false,false,false,false,false
  url: https://aax-us-east.amazon-adsystem.com/x/px passed: false,false,false,false,false
  url: https://aax-us-east.amazon-adsystem.com/x/px passed: false,false,false,false,false
  url: https://aax-us-east.amazon-adsystem.com/x/px passed: true,true,true,true,true
  url: https://aax-us-east.amazon-adsystem.com/x/px passed: false,false,false,false,false
  url: https://aax-us-east.amazon-adsystem.com/x/px passed: false,false,false,false,false
  url: https://aax-us-east.amazon-adsystem.com/x/px passed: false,false,false,false,false
  url: https://aax-us-east.amazon-adsystem.com/x/px passed: false,false,false,false,false
  url: https://aax-us-east.amazon-adsystem.com/x/px passed: false,false,false,false,false
  url: https://aax-us-east.amazon-adsystem.com/x/px passed: false,false,false,false,false
  url: https://aax-us-east.amazon-adsystem.com/x/px passed: false,false,false,false,false
AppNextTests whether the browser blocks the page from loading the tracker at https://acdn.adnxs.com/dmp/up/pixie.js
  url: https://acdn.adnxs.com/dmp/up/pixie.js passed: true,true,true,true,true
  url: https://acdn.adnxs.com/dmp/up/pixie.js passed: true,true,true,true,true
  url: https://acdn.adnxs.com/dmp/up/pixie.js passed: true,true,true,true,true
  url: https://acdn.adnxs.com/dmp/up/pixie.js passed: false,false,false,false,false
  url: https://acdn.adnxs.com/dmp/up/pixie.js passed: false,false,false,false,false
  url: https://acdn.adnxs.com/dmp/up/pixie.js passed: false,false,false,false,false
  url: https://acdn.adnxs.com/dmp/up/pixie.js passed: false,false,false,false,false
  url: https://acdn.adnxs.com/dmp/up/pixie.js passed: false,false,false,false,false
  url: https://acdn.adnxs.com/dmp/up/pixie.js passed: true,true,true,true,true
  url: https://acdn.adnxs.com/dmp/up/pixie.js passed: false,false,false,false,false
  url: https://acdn.adnxs.com/dmp/up/pixie.js passed: false,false,false,false,false
  url: https://acdn.adnxs.com/dmp/up/pixie.js passed: false,false,false,false,false
  url: https://acdn.adnxs.com/dmp/up/pixie.js passed: false,false,false,false,false
  url: https://acdn.adnxs.com/dmp/up/pixie.js passed: false,false,false,false,false
  url: https://acdn.adnxs.com/dmp/up/pixie.js passed: false,false,false,false,false
  url: https://acdn.adnxs.com/dmp/up/pixie.js passed: false,false,false,false,false
Bing AdsTests whether the browser blocks the page from loading the tracker at https://bat.bing.com/bat.js
  url: https://bat.bing.com/bat.js passed: true,true,true,true,true
  url: https://bat.bing.com/bat.js passed: true,true,true,true,true
  url: https://bat.bing.com/bat.js passed: true,true,true,true,true
  url: https://bat.bing.com/bat.js passed: false,false,false,false,false
  url: https://bat.bing.com/bat.js passed: false,false,false,false,false
  url: https://bat.bing.com/bat.js passed: false,false,false,false,false
  url: https://bat.bing.com/bat.js passed: false,false,false,false,false
  url: https://bat.bing.com/bat.js passed: false,false,false,false,false
  url: https://bat.bing.com/bat.js passed: false,false,false,false,false
  url: https://bat.bing.com/bat.js passed: false,false,false,false,false
  url: https://bat.bing.com/bat.js passed: false,false,false,false,false
  url: https://bat.bing.com/bat.js passed: false,false,false,false,false
  url: https://bat.bing.com/bat.js passed: false,false,false,false,false
  url: https://bat.bing.com/bat.js passed: false,false,false,false,false
  url: https://bat.bing.com/bat.js passed: false,false,false,false,false
  url: https://bat.bing.com/bat.js passed: false,false,false,false,false
ChartbeatTests whether the browser blocks the page from loading the tracker at https://pdev.chartbeat.net/ping?h=x&p=x&r=&b=
  url: https://pdev.chartbeat.net/ping?h=x&p=x&r=&b= passed: true,true,true,true,true
  url: https://pdev.chartbeat.net/ping?h=x&p=x&r=&b= passed: true,true,true,true,true
  url: https://pdev.chartbeat.net/ping?h=x&p=x&r=&b= passed: true,true,true,true,true
  url: https://pdev.chartbeat.net/ping?h=x&p=x&r=&b= passed: false,false,false,false,false
  url: https://pdev.chartbeat.net/ping?h=x&p=x&r=&b= passed: false,false,false,false,false
  url: https://pdev.chartbeat.net/ping?h=x&p=x&r=&b= passed: false,false,false,false,false
  url: https://pdev.chartbeat.net/ping?h=x&p=x&r=&b= passed: false,false,false,false,false
  url: https://pdev.chartbeat.net/ping?h=x&p=x&r=&b= passed: false,false,false,false,false
  url: https://pdev.chartbeat.net/ping?h=x&p=x&r=&b= passed: true,true,true,true,true
  url: https://pdev.chartbeat.net/ping?h=x&p=x&r=&b= passed: false,false,false,false,false
  url: https://pdev.chartbeat.net/ping?h=x&p=x&r=&b= passed: false,false,false,false,false
  url: https://pdev.chartbeat.net/ping?h=x&p=x&r=&b= passed: false,false,false,false,false
  url: https://pdev.chartbeat.net/ping?h=x&p=x&r=&b= passed: false,false,false,false,false
  url: https://pdev.chartbeat.net/ping?h=x&p=x&r=&b= passed: false,false,false,false,false
  url: https://pdev.chartbeat.net/ping?h=x&p=x&r=&b= passed: false,false,false,false,false
  url: https://pdev.chartbeat.net/ping?h=x&p=x&r=&b= passed: false,false,false,false,false
CriteoTests whether the browser blocks the page from loading the tracker at https://csm.da.us.criteo.net/iev
  url: https://csm.da.us.criteo.net/iev passed: true,true,true,true,true
  url: https://csm.da.us.criteo.net/iev passed: true,true,true,true,true
  url: https://csm.da.us.criteo.net/iev passed: true,true,true,true,true
  url: https://csm.da.us.criteo.net/iev passed: false,false,false,false,false
  url: https://csm.da.us.criteo.net/iev passed: false,false,false,false,false
  url: https://csm.da.us.criteo.net/iev passed: false,false,false,false,false
  url: https://csm.da.us.criteo.net/iev passed: false,false,false,false,false
  url: https://csm.da.us.criteo.net/iev passed: false,false,false,false,false
  url: https://csm.da.us.criteo.net/iev passed: true,true,true,true,true
  url: https://csm.da.us.criteo.net/iev passed: false,false,false,false,false
  url: https://csm.da.us.criteo.net/iev passed: false,false,false,false,false
  url: https://csm.da.us.criteo.net/iev passed: false,false,false,false,false
  url: https://csm.da.us.criteo.net/iev passed: false,false,false,false,false
  url: https://csm.da.us.criteo.net/iev passed: false,false,false,false,false
  url: https://csm.da.us.criteo.net/iev passed: false,false,false,false,false
  url: https://csm.da.us.criteo.net/iev passed: false,false,false,false,false
DoubleClick (Google)Tests whether the browser blocks the page from loading the tracker at https://securepubads.g.doubleclick.net/static/glade.js
  url: https://securepubads.g.doubleclick.net/static/glade.js passed: true,true,true,true,true
  url: https://securepubads.g.doubleclick.net/static/glade.js passed: true,true,true,true,true
  url: https://securepubads.g.doubleclick.net/static/glade.js passed: true,true,true,true,true
  url: https://securepubads.g.doubleclick.net/static/glade.js passed: false,false,false,false,false
  url: https://securepubads.g.doubleclick.net/static/glade.js passed: false,false,false,false,false
  url: https://securepubads.g.doubleclick.net/static/glade.js passed: false,false,false,false,false
  url: https://securepubads.g.doubleclick.net/static/glade.js passed: false,false,false,false,false
  url: https://securepubads.g.doubleclick.net/static/glade.js passed: false,false,false,false,false
  url: https://securepubads.g.doubleclick.net/static/glade.js passed: true,true,true,true,true
  url: https://securepubads.g.doubleclick.net/static/glade.js passed: false,false,false,false,false
  url: https://securepubads.g.doubleclick.net/static/glade.js passed: false,false,false,false,false
  url: https://securepubads.g.doubleclick.net/static/glade.js passed: false,false,false,false,false
  url: https://securepubads.g.doubleclick.net/static/glade.js passed: false,false,false,false,false
  url: https://securepubads.g.doubleclick.net/static/glade.js passed: false,false,false,false,false
  url: https://securepubads.g.doubleclick.net/static/glade.js passed: false,false,false,false,false
  url: https://securepubads.g.doubleclick.net/static/glade.js passed: false,false,false,false,false
Facebook PixelTests whether the browser blocks the page from loading the tracker at https://www.facebook.com/tr?id=123
  url: https://www.facebook.com/tr?id=123 passed: true,true,true,true,true
  url: https://www.facebook.com/tr?id=123 passed: true,true,true,true,true
  url: https://www.facebook.com/tr?id=123 passed: true,true,true,true,true
  url: https://www.facebook.com/tr?id=123 passed: false,false,false,false,false
  url: https://www.facebook.com/tr?id=123 passed: false,false,false,false,false
  url: https://www.facebook.com/tr?id=123 passed: false,false,false,false,false
  url: https://www.facebook.com/tr?id=123 passed: false,false,false,false,false
  url: https://www.facebook.com/tr?id=123 passed: false,false,false,false,false
  url: https://www.facebook.com/tr?id=123 passed: true,true,true,true,true
  url: https://www.facebook.com/tr?id=123 passed: false,false,false,false,false
  url: https://www.facebook.com/tr?id=123 passed: false,false,false,false,false
  url: https://www.facebook.com/tr?id=123 passed: false,false,false,false,false
  url: https://www.facebook.com/tr?id=123 passed: false,false,false,false,false
  url: https://www.facebook.com/tr?id=123 passed: false,false,false,false,false
  url: https://www.facebook.com/tr?id=123 passed: false,false,false,false,false
  url: https://www.facebook.com/tr?id=123 passed: false,false,false,false,false
Google Ad ServicesTests whether the browser blocks the page from loading the tracker at https://www.googleadservices.com/pagead/conversion.js
  url: https://www.googleadservices.com/pagead/conversion.js passed: true,true,true,true,true
  url: https://www.googleadservices.com/pagead/conversion.js passed: true,true,true,true,true
  url: https://www.googleadservices.com/pagead/conversion.js passed: true,true,true,true,true
  url: https://www.googleadservices.com/pagead/conversion.js passed: false,false,false,false,false
  url: https://www.googleadservices.com/pagead/conversion.js passed: false,false,false,false,false
  url: https://www.googleadservices.com/pagead/conversion.js passed: false,false,false,false,false
  url: https://www.googleadservices.com/pagead/conversion.js passed: false,false,false,false,false
  url: https://www.googleadservices.com/pagead/conversion.js passed: false,false,false,false,false
  url: https://www.googleadservices.com/pagead/conversion.js passed: true,true,true,true,true
  url: https://www.googleadservices.com/pagead/conversion.js passed: false,false,false,false,false
  url: https://www.googleadservices.com/pagead/conversion.js passed: false,false,false,false,false
  url: https://www.googleadservices.com/pagead/conversion.js passed: false,false,false,false,false
  url: https://www.googleadservices.com/pagead/conversion.js passed: false,false,false,false,false
  url: https://www.googleadservices.com/pagead/conversion.js passed: false,false,false,false,false
  url: https://www.googleadservices.com/pagead/conversion.js passed: false,false,false,false,false
  url: https://www.googleadservices.com/pagead/conversion.js passed: false,false,false,false,false
Google AnalyticsTests whether the browser blocks the page from loading the tracker at https://google-analytics.com/urchin.js
  url: https://google-analytics.com/urchin.js passed: true,true,true,true,true
  url: https://google-analytics.com/urchin.js passed: true,true,true,true,true
  url: https://google-analytics.com/urchin.js passed: true,true,true,true,true
  url: https://google-analytics.com/urchin.js passed: false,false,false,false,false
  url: https://google-analytics.com/urchin.js passed: false,false,false,false,false
  url: https://google-analytics.com/urchin.js passed: false,false,false,false,false
  url: https://google-analytics.com/urchin.js passed: false,false,false,false,false
  url: https://google-analytics.com/urchin.js passed: false,false,false,false,false
  url: https://google-analytics.com/urchin.js passed: true,true,true,true,true
  url: https://google-analytics.com/urchin.js passed: false,false,false,false,false
  url: https://google-analytics.com/urchin.js passed: false,false,false,false,false
  url: https://google-analytics.com/urchin.js passed: false,false,false,false,false
  url: https://google-analytics.com/urchin.js passed: false,false,false,false,false
  url: https://google-analytics.com/urchin.js passed: false,false,false,false,false
  url: https://google-analytics.com/urchin.js passed: false,false,false,false,false
  url: https://google-analytics.com/urchin.js passed: false,false,false,false,false
Google SyndicationTests whether the browser blocks the page from loading the tracker at https://tpc.googlesyndication.com/sodar/UFYwWwmt.js
  url: https://tpc.googlesyndication.com/sodar/UFYwWwmt.js passed: true,true,true,true,true
  url: https://tpc.googlesyndication.com/sodar/UFYwWwmt.js passed: true,true,true,true,true
  url: https://tpc.googlesyndication.com/sodar/UFYwWwmt.js passed: true,true,true,true,true
  url: https://tpc.googlesyndication.com/sodar/UFYwWwmt.js passed: false,false,false,false,false
  url: https://tpc.googlesyndication.com/sodar/UFYwWwmt.js passed: false,false,false,false,false
  url: https://tpc.googlesyndication.com/sodar/UFYwWwmt.js passed: false,false,false,false,false
  url: https://tpc.googlesyndication.com/sodar/UFYwWwmt.js passed: false,false,false,false,false
  url: https://tpc.googlesyndication.com/sodar/UFYwWwmt.js passed: false,false,false,false,false
  url: https://tpc.googlesyndication.com/sodar/UFYwWwmt.js passed: true,true,true,true,true
  url: https://tpc.googlesyndication.com/sodar/UFYwWwmt.js passed: false,false,false,false,false
  url: https://tpc.googlesyndication.com/sodar/UFYwWwmt.js passed: false,false,false,false,false
  url: https://tpc.googlesyndication.com/sodar/UFYwWwmt.js passed: false,false,false,false,false
  url: https://tpc.googlesyndication.com/sodar/UFYwWwmt.js passed: false,false,false,false,false
  url: https://tpc.googlesyndication.com/sodar/UFYwWwmt.js passed: false,false,false,false,false
  url: https://tpc.googlesyndication.com/sodar/UFYwWwmt.js passed: false,false,false,false,false
  url: https://tpc.googlesyndication.com/sodar/UFYwWwmt.js passed: false,false,false,false,false
Google Tag ManagerTests whether the browser blocks the page from loading the tracker at https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL
  url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL passed: true,true,true,true,true
  url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL passed: true,true,true,true,true
  url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL passed: true,true,true,true,true
  url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL passed: false,false,false,false,false
  url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL passed: false,false,false,false,false
  url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL passed: false,false,false,false,false
  url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL passed: false,false,false,false,false
  url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL passed: false,false,false,false,false
  url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL passed: false,false,false,false,false
  url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL passed: false,false,false,false,false
  url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL passed: false,false,false,false,false
  url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL passed: false,false,false,false,false
  url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL passed: false,false,false,false,false
  url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL passed: false,false,false,false,false
  url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL passed: false,false,false,false,false
  url: https://www.googletagmanager.com/gtag.js?id=GTM-NX4SMZL passed: false,false,false,false,false
Index ExchangeTests whether the browser blocks the page from loading the tracker at https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1
  url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 passed: true,true,true,true,true
  url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 passed: true,true,true,true,true
  url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 passed: true,true,true,true,true
  url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 passed: false,false,false,false,false
  url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 passed: false,false,false,false,false
  url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 passed: false,false,false,false,false
  url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 passed: false,false,false,false,false
  url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 passed: false,false,false,false,false
  url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 passed: true,true,true,true,true
  url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 passed: false,false,false,false,false
  url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 passed: false,false,false,false,false
  url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 passed: false,false,false,false,false
  url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 passed: false,false,false,false,false
  url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 passed: false,false,false,false,false
  url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 passed: false,false,false,false,false
  url: https://dsum-sec.casalemedia.com/crum?cm_dsp_id=10&external_user_id=629685505537&C=1 passed: false,false,false,false,false
New RelicTests whether the browser blocks the page from loading the tracker at https://js-agent.newrelic.com/nr-1212.min.js
  url: https://js-agent.newrelic.com/nr-1212.min.js passed: true,true,true,true,true
  url: https://js-agent.newrelic.com/nr-1212.min.js passed: true,true,true,true,true
  url: https://js-agent.newrelic.com/nr-1212.min.js passed: true,true,true,true,true
  url: https://js-agent.newrelic.com/nr-1212.min.js passed: false,false,false,false,false
  url: https://js-agent.newrelic.com/nr-1212.min.js passed: false,false,false,false,false
  url: https://js-agent.newrelic.com/nr-1212.min.js passed: false,false,false,false,false
  url: https://js-agent.newrelic.com/nr-1212.min.js passed: false,false,false,false,false
  url: https://js-agent.newrelic.com/nr-1212.min.js passed: false,false,false,false,false
  url: https://js-agent.newrelic.com/nr-1212.min.js passed: true,true,true,true,true
  url: https://js-agent.newrelic.com/nr-1212.min.js passed: false,false,false,false,false
  url: https://js-agent.newrelic.com/nr-1212.min.js passed: false,false,false,false,false
  url: https://js-agent.newrelic.com/nr-1212.min.js passed: false,false,false,false,false
  url: https://js-agent.newrelic.com/nr-1212.min.js passed: false,false,false,false,false
  url: https://js-agent.newrelic.com/nr-1212.min.js passed: false,false,false,false,false
  url: https://js-agent.newrelic.com/nr-1212.min.js passed: false,false,false,false,false
  url: https://js-agent.newrelic.com/nr-1212.min.js passed: false,false,false,false,false
QuantcastTests whether the browser blocks the page from loading the tracker at https://pixel.quantserve.com/pixel
  url: https://pixel.quantserve.com/pixel passed: true,true,true,true,true
  url: https://pixel.quantserve.com/pixel passed: true,true,true,true,true
  url: https://pixel.quantserve.com/pixel passed: true,true,true,true,true
  url: https://pixel.quantserve.com/pixel passed: false,false,false,false,false
  url: https://pixel.quantserve.com/pixel passed: false,false,false,false,false
  url: https://pixel.quantserve.com/pixel passed: false,false,false,false,false
  url: https://pixel.quantserve.com/pixel passed: false,false,false,false,false
  url: https://pixel.quantserve.com/pixel passed: false,false,false,false,false
  url: https://pixel.quantserve.com/pixel passed: true,true,true,true,true
  url: https://pixel.quantserve.com/pixel passed: false,false,false,false,false
  url: https://pixel.quantserve.com/pixel passed: false,false,false,false,false
  url: https://pixel.quantserve.com/pixel passed: false,false,false,false,false
  url: https://pixel.quantserve.com/pixel passed: false,false,false,false,false
  url: https://pixel.quantserve.com/pixel passed: false,false,false,false,false
  url: https://pixel.quantserve.com/pixel passed: false,false,false,false,false
  url: https://pixel.quantserve.com/pixel passed: false,false,false,false,false
Scorecard Research BeaconTests whether the browser blocks the page from loading the tracker at https://sb.scorecardresearch.com/internal-c2/default/cs.js
  url: https://sb.scorecardresearch.com/internal-c2/default/cs.js passed: true,true,true,true,true
  url: https://sb.scorecardresearch.com/internal-c2/default/cs.js passed: true,true,true,true,true
  url: https://sb.scorecardresearch.com/internal-c2/default/cs.js passed: true,true,true,true,true
  url: https://sb.scorecardresearch.com/internal-c2/default/cs.js passed: false,false,false,false,false
  url: https://sb.scorecardresearch.com/internal-c2/default/cs.js passed: false,false,false,false,false
  url: https://sb.scorecardresearch.com/internal-c2/default/cs.js passed: false,false,false,false,false
  url: https://sb.scorecardresearch.com/internal-c2/default/cs.js passed: false,false,false,false,false
  url: https://sb.scorecardresearch.com/internal-c2/default/cs.js passed: false,false,false,false,false
  url: https://sb.scorecardresearch.com/internal-c2/default/cs.js passed: true,true,true,true,true
  url: https://sb.scorecardresearch.com/internal-c2/default/cs.js passed: false,false,false,false,false
  url: https://sb.scorecardresearch.com/internal-c2/default/cs.js passed: false,false,false,false,false
  url: https://sb.scorecardresearch.com/internal-c2/default/cs.js passed: false,false,false,false,false
  url: https://sb.scorecardresearch.com/internal-c2/default/cs.js passed: false,false,false,false,false
  url: https://sb.scorecardresearch.com/internal-c2/default/cs.js passed: false,false,false,false,false
  url: https://sb.scorecardresearch.com/internal-c2/default/cs.js passed: false,false,false,false,false
  url: https://sb.scorecardresearch.com/internal-c2/default/cs.js passed: false,false,false,false,false
TaboolaTests whether the browser blocks the page from loading the tracker at https://cdn.taboola.com/libtrc/UNIQUEID/tfa.js
  url: https://cdn.taboola.com/libtrc/UNIQUEID/tfa.js passed: true,true,true,true,true
  url: https://cdn.taboola.com/libtrc/UNIQUEID/tfa.js passed: true,true,true,true,true
  url: https://cdn.taboola.com/libtrc/UNIQUEID/tfa.js passed: true,true,true,true,true
  url: https://cdn.taboola.com/libtrc/UNIQUEID/tfa.js passed: false,false,false,false,false
  url: https://cdn.taboola.com/libtrc/UNIQUEID/tfa.js passed: false,false,false,false,false
  url: https://cdn.taboola.com/libtrc/UNIQUEID/tfa.js passed: false,false,false,false,false
  url: https://cdn.taboola.com/libtrc/UNIQUEID/tfa.js passed: false,false,false,false,false
  url: https://cdn.taboola.com/libtrc/UNIQUEID/tfa.js passed: false,false,false,false,false
  url: https://cdn.taboola.com/libtrc/UNIQUEID/tfa.js passed: true,true,true,true,true
  url: https://cdn.taboola.com/libtrc/UNIQUEID/tfa.js passed: false,false,false,false,false
  url: https://cdn.taboola.com/libtrc/UNIQUEID/tfa.js passed: false,false,false,false,false
  url: https://cdn.taboola.com/libtrc/UNIQUEID/tfa.js passed: false,false,false,false,false
  url: https://cdn.taboola.com/libtrc/UNIQUEID/tfa.js passed: false,false,false,false,false
  url: https://cdn.taboola.com/libtrc/UNIQUEID/tfa.js passed: false,false,false,false,false
  url: https://cdn.taboola.com/libtrc/UNIQUEID/tfa.js passed: false,false,false,false,false
  url: https://cdn.taboola.com/libtrc/UNIQUEID/tfa.js passed: false,false,false,false,false
Twitter AdsTests whether the browser blocks the page from loading the tracker at https://static.ads-twitter.com/uwt.js
  url: https://static.ads-twitter.com/uwt.js passed: true,true,true,true,true
  url: https://static.ads-twitter.com/uwt.js passed: true,true,true,true,true
  url: https://static.ads-twitter.com/uwt.js passed: true,true,true,true,true
  url: https://static.ads-twitter.com/uwt.js passed: false,false,false,false,false
  url: https://static.ads-twitter.com/uwt.js passed: false,false,false,false,false
  url: https://static.ads-twitter.com/uwt.js passed: false,false,false,false,false
  url: https://static.ads-twitter.com/uwt.js passed: false,false,false,false,false
  url: https://static.ads-twitter.com/uwt.js passed: false,false,false,false,false
  url: https://static.ads-twitter.com/uwt.js passed: true,true,true,true,true
  url: https://static.ads-twitter.com/uwt.js passed: false,false,false,false,false
  url: https://static.ads-twitter.com/uwt.js passed: false,false,false,false,false
  url: https://static.ads-twitter.com/uwt.js passed: false,false,false,false,false
  url: https://static.ads-twitter.com/uwt.js passed: false,false,false,false,false
  url: https://static.ads-twitter.com/uwt.js passed: false,false,false,false,false
  url: https://static.ads-twitter.com/uwt.js passed: false,false,false,false,false
  url: https://static.ads-twitter.com/uwt.js passed: false,false,false,false,false
Yandex AdsTests whether the browser blocks the page from loading the tracker at https://yandex.ru/ads/system/header-bidding.js
  url: https://yandex.ru/ads/system/header-bidding.js passed: true,true,true,true,true
  url: https://yandex.ru/ads/system/header-bidding.js passed: true,true,true,true,true
  url: https://yandex.ru/ads/system/header-bidding.js passed: true,true,true,true,true
  url: https://yandex.ru/ads/system/header-bidding.js passed: false,false,false,false,false
  url: https://yandex.ru/ads/system/header-bidding.js passed: false,false,false,false,false
  url: https://yandex.ru/ads/system/header-bidding.js passed: false,false,false,false,false
  url: https://yandex.ru/ads/system/header-bidding.js passed: false,false,false,false,false
  url: https://yandex.ru/ads/system/header-bidding.js passed: false,false,false,false,false
  url: https://yandex.ru/ads/system/header-bidding.js passed: false,false,false,false,false
  url: https://yandex.ru/ads/system/header-bidding.js passed: false,false,false,false,false
  url: https://yandex.ru/ads/system/header-bidding.js passed: false,false,false,false,false
  url: https://yandex.ru/ads/system/header-bidding.js passed: false,false,false,false,false
  url: https://yandex.ru/ads/system/header-bidding.js passed: false,false,false,false,false
  url: https://yandex.ru/ads/system/header-bidding.js passed: false,false,false,false,false
  url: https://yandex.ru/ads/system/header-bidding.js passed: false,false,false,false,false
  url: https://yandex.ru/ads/system/header-bidding.js passed: false,false,false,false,false
Yandex MetrikaTests whether the browser blocks the page from loading the tracker at https://mc.yandex.ru/metrika/tag.js
  url: https://mc.yandex.ru/metrika/tag.js passed: true,true,true,true,true
  url: https://mc.yandex.ru/metrika/tag.js passed: true,true,true,true,true
  url: https://mc.yandex.ru/metrika/tag.js passed: true,true,true,true,true
  url: https://mc.yandex.ru/metrika/tag.js passed: false,false,false,false,false
  url: https://mc.yandex.ru/metrika/tag.js passed: false,false,false,false,false
  url: https://mc.yandex.ru/metrika/tag.js passed: false,false,false,false,false
  url: https://mc.yandex.ru/metrika/tag.js passed: false,false,false,false,false
  url: https://mc.yandex.ru/metrika/tag.js passed: false,false,false,false,false
  url: https://mc.yandex.ru/metrika/tag.js passed: true,true,true,true,true
  url: https://mc.yandex.ru/metrika/tag.js passed: false,false,false,false,false
  url: https://mc.yandex.ru/metrika/tag.js passed: false,false,false,false,false
  url: https://mc.yandex.ru/metrika/tag.js passed: false,false,false,false,false
  url: https://mc.yandex.ru/metrika/tag.js passed: false,false,false,false,false
  url: https://mc.yandex.ru/metrika/tag.js passed: false,false,false,false,false
  url: https://mc.yandex.ru/metrika/tag.js passed: false,false,false,false,false
  url: https://mc.yandex.ru/metrika/tag.js passed: false,false,false,false,false