Nightly Builds
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brave
1.35

brave
1.35

private

brave
1.35

Tor

chrome
98.0

chrome
98.0

private

edge
98.0

edge
98.0

private

opera
84.0

opera
84.0

private

safari
15.4

safari
15.4

private

tor
tbb-nightly.2021

vivaldi
5.1

vivaldi
5.1

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, h3, h2, h3, h2 unsupported: false, false, false, false, false passed: true, false, true, false, 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 result, different first party: h2, h2, h2, h2 unsupported: true, true, true, true passed: undefined test failed: 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, h3, h2, h3, h2 unsupported: false, false, false, false, false passed: true, false, true, false, 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: 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 result, different first party: h2, h2 unsupported: true, true passed: undefined test failed: 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=${secret}`); let result = await response.json(); let blobUrl = decodeURIComponent(result.blobUrl); let blobResponse = await fetch(blobUrl); return blobResponse.text(); } result, same first party: ab51d6d6-aa87-4915-95e1-ca0cc2a653b5, 2fb9237f-833c-4be7-83bc-b62f36cb1db4, efa69fa7-bbc3-4c18-a192-154696b88c8f, 083eafc2-dd42-475d-8ac7-41ce976a5f33, 3a41099e-afbb-421e-bfe3-92dc6a4d74c7 result, different first party: ab51d6d6-aa87-4915-95e1-ca0cc2a653b5, 2fb9237f-833c-4be7-83bc-b62f36cb1db4, efa69fa7-bbc3-4c18-a192-154696b88c8f, 083eafc2-dd42-475d-8ac7-41ce976a5f33, 3a41099e-afbb-421e-bfe3-92dc6a4d74c7 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { try { let blobURL = URL.createObjectURL(new Blob([secret])); fetch(`${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: c0b68757-a1d7-4be5-aa66-badf239865f3, e85cf5ab-9c51-45c3-84ac-1b84ddd4d47d, 02acfa8e-83e5-48bd-a812-05dee769f7a6, 017fb147-a703-4204-ac45-0425f8494e70, dccf0a0c-6066-4fed-b392-4390640df56a result, different first party: c0b68757-a1d7-4be5-aa66-badf239865f3, e85cf5ab-9c51-45c3-84ac-1b84ddd4d47d, 02acfa8e-83e5-48bd-a812-05dee769f7a6, 017fb147-a703-4204-ac45-0425f8494e70, dccf0a0c-6066-4fed-b392-4390640df56a 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=${secret}`); let result = await response.json(); let blobUrl = decodeURIComponent(result.blobUrl); let blobResponse = await fetch(blobUrl); return blobResponse.text(); } result, same first party: 3f186427-93e7-4d81-8059-52452751aea5, 37862dbc-e093-41e7-9641-59b9f0fb4323, d161981c-6cf6-4473-97cd-27bb83a9f490, 179db3be-471b-4e1a-9a98-5b33415f6656 result, different first party: 3f186427-93e7-4d81-8059-52452751aea5, 37862dbc-e093-41e7-9641-59b9f0fb4323, d161981c-6cf6-4473-97cd-27bb83a9f490, 179db3be-471b-4e1a-9a98-5b33415f6656 unsupported: false, false, false, false passed: false, false, false, false test failed: false, false, false, false
  write: (secret) => { try { let blobURL = URL.createObjectURL(new Blob([secret])); fetch(`${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: 3988e863-e299-4253-a3c8-3b0f4e9e50ca, f872d745-fdeb-41e2-87d5-35af5ce5f0d4, 67816c52-c1cd-4ad1-ac3b-ef8c80c1bbae, 59b1abbd-c75c-4720-9997-f434ffd62315, efa5790c-cc47-41c1-98ea-da98083c1b6a result, different first party: 3988e863-e299-4253-a3c8-3b0f4e9e50ca, f872d745-fdeb-41e2-87d5-35af5ce5f0d4, 67816c52-c1cd-4ad1-ac3b-ef8c80c1bbae, 59b1abbd-c75c-4720-9997-f434ffd62315, efa5790c-cc47-41c1-98ea-da98083c1b6a 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=${secret}`); let result = await response.json(); let blobUrl = decodeURIComponent(result.blobUrl); let blobResponse = await fetch(blobUrl); return blobResponse.text(); } result, same first party: 1eeaa39c-fc45-401b-9b49-8279d558ff2c, ddfb602a-31bd-431c-ae21-423e00c649e6, 46a1a6d5-ea38-4769-9e6b-ee363fb39e1c, fc027800-35cc-4265-b354-e99377121331, 723241f8-e69b-486e-aa83-ae33e0274f29 result, different first party: 1eeaa39c-fc45-401b-9b49-8279d558ff2c, ddfb602a-31bd-431c-ae21-423e00c649e6, 46a1a6d5-ea38-4769-9e6b-ee363fb39e1c, fc027800-35cc-4265-b354-e99377121331, 723241f8-e69b-486e-aa83-ae33e0274f29 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { try { let blobURL = URL.createObjectURL(new Blob([secret])); fetch(`${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: 72a44cd0-9935-4373-a725-705e2b10d285, 1d5f8c43-4bba-4458-8131-857c66d41a43, 78319bba-db56-4aad-8da1-16c0f38957cf, f05ef66e-6490-449f-a78d-364c6cd742bd, 54604a70-2d23-4c32-8a4e-87f8c7919646 result, different first party: 72a44cd0-9935-4373-a725-705e2b10d285, 1d5f8c43-4bba-4458-8131-857c66d41a43, 78319bba-db56-4aad-8da1-16c0f38957cf, f05ef66e-6490-449f-a78d-364c6cd742bd, 54604a70-2d23-4c32-8a4e-87f8c7919646 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=${secret}`); let result = await response.json(); let blobUrl = decodeURIComponent(result.blobUrl); let blobResponse = await fetch(blobUrl); return blobResponse.text(); } result, same first party: 9cea1b3b-e207-43d2-9795-9538ec6a8090, 3f736480-9a41-4d46-b833-0a48f57239a1, 008b4db4-b64b-48f4-8470-9707c690ac25, 67600378-bf10-43c1-ac1e-5bd745ce3651, 65c17a86-c49f-4b2e-a217-5320c33d8da2 result, different first party: 9cea1b3b-e207-43d2-9795-9538ec6a8090, 3f736480-9a41-4d46-b833-0a48f57239a1, 008b4db4-b64b-48f4-8470-9707c690ac25, 67600378-bf10-43c1-ac1e-5bd745ce3651, 65c17a86-c49f-4b2e-a217-5320c33d8da2 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { try { let blobURL = URL.createObjectURL(new Blob([secret])); fetch(`${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: 10c0067e-3c96-4710-a9a4-78f1c7158393, 5b0d488a-9be5-4b2c-931d-40b1e8e79252, 31ab50a7-ee6e-427a-8a1d-fc2ef242865f, 4be77fae-05f6-4b5e-b7ca-710b2224dd00, 9ec72172-8287-402b-ab51-ebf15cc76440 result, different first party: 10c0067e-3c96-4710-a9a4-78f1c7158393, 5b0d488a-9be5-4b2c-931d-40b1e8e79252, 31ab50a7-ee6e-427a-8a1d-fc2ef242865f, 4be77fae-05f6-4b5e-b7ca-710b2224dd00, 9ec72172-8287-402b-ab51-ebf15cc76440 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=${secret}`); let result = await response.json(); let blobUrl = decodeURIComponent(result.blobUrl); let blobResponse = await fetch(blobUrl); return blobResponse.text(); } result, same first party: 7ee67fba-1f61-4db7-b32c-6f8455730284, aef87fb1-d870-4f1f-ae1e-72ad659287e5, 4ab9730c-6aac-4b46-bd43-8cf40979b01d, 78ffe5db-860d-4149-b578-e8bac2d612fa, f81aa39c-9ac9-4131-ba2d-6bea955ef656 result, different first party: 7ee67fba-1f61-4db7-b32c-6f8455730284, aef87fb1-d870-4f1f-ae1e-72ad659287e5, 4ab9730c-6aac-4b46-bd43-8cf40979b01d, 78ffe5db-860d-4149-b578-e8bac2d612fa, f81aa39c-9ac9-4131-ba2d-6bea955ef656 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { try { let blobURL = URL.createObjectURL(new Blob([secret])); fetch(`${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: ac5b7e49-624f-4382-a7fd-5426c57efd53, 6f8c5cd2-3bec-46f1-bff5-7752371234a1, 36516975-7613-4d7d-ad78-31e324dfc4e6, 5aaeca7b-6ce1-45e7-a472-f838d8e5cac2, a10000c3-415d-4a49-9b9d-c2b6e2d8b3be result, different first party: ac5b7e49-624f-4382-a7fd-5426c57efd53, 6f8c5cd2-3bec-46f1-bff5-7752371234a1, 36516975-7613-4d7d-ad78-31e324dfc4e6, 5aaeca7b-6ce1-45e7-a472-f838d8e5cac2, a10000c3-415d-4a49-9b9d-c2b6e2d8b3be 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: f8bf602c-f399-453d-98f1-86c1c8d561c3, b7a1c758-b9d5-4d33-8dad-c99c7241d02e result, different first party: Error: NetworkError when attempting to fetch resource., Error: NetworkError when attempting to fetch resource. unsupported: false, false passed: true, true test failed: 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=${secret}`); let result = await response.json(); let blobUrl = decodeURIComponent(result.blobUrl); let blobResponse = await fetch(blobUrl); return blobResponse.text(); } result, same first party: c1bbe007-f2fe-49c1-a6b0-5f1cbf0be473, 3c08955f-04c9-4a59-96eb-137368cf9926, 61654f23-288a-4d35-90c4-240c5dfca9e4, f7e98d3c-cde5-44e8-a830-24ee3ef838ea, d290e813-c8c0-435a-8a05-6f5f18960650 result, different first party: c1bbe007-f2fe-49c1-a6b0-5f1cbf0be473, 3c08955f-04c9-4a59-96eb-137368cf9926, 61654f23-288a-4d35-90c4-240c5dfca9e4, f7e98d3c-cde5-44e8-a830-24ee3ef838ea, d290e813-c8c0-435a-8a05-6f5f18960650 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { try { let blobURL = URL.createObjectURL(new Blob([secret])); fetch(`${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: 05ef54b0-253a-4e09-87ac-9e4144d5665e, d1c13fe2-6638-448c-9648-af0109876a35, 3d3fc963-f162-428b-9fc1-b792d4e6387e, 78214b70-de57-4120-86f9-90c6b4f4157e, 225b8760-afaa-48a7-9c36-8c9995b23d94 result, different first party: 05ef54b0-253a-4e09-87ac-9e4144d5665e, d1c13fe2-6638-448c-9648-af0109876a35, 3d3fc963-f162-428b-9fc1-b792d4e6387e, 78214b70-de57-4120-86f9-90c6b4f4157e, 225b8760-afaa-48a7-9c36-8c9995b23d94 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: ab51d6d6-aa87-4915-95e1-ca0cc2a653b5, 2fb9237f-833c-4be7-83bc-b62f36cb1db4, efa69fa7-bbc3-4c18-a192-154696b88c8f, 083eafc2-dd42-475d-8ac7-41ce976a5f33, 3a41099e-afbb-421e-bfe3-92dc6a4d74c7 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: c0b68757-a1d7-4be5-aa66-badf239865f3, e85cf5ab-9c51-45c3-84ac-1b84ddd4d47d, 02acfa8e-83e5-48bd-a812-05dee769f7a6, 017fb147-a703-4204-ac45-0425f8494e70, dccf0a0c-6066-4fed-b392-4390640df56a 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: 3f186427-93e7-4d81-8059-52452751aea5, 37862dbc-e093-41e7-9641-59b9f0fb4323, d161981c-6cf6-4473-97cd-27bb83a9f490, 179db3be-471b-4e1a-9a98-5b33415f6656 result, different first party: Error: no BroadcastChannel message, Error: no BroadcastChannel message, Error: no BroadcastChannel message, Error: no BroadcastChannel message unsupported: false, false, false, false passed: true, true, true, true test failed: 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: 3988e863-e299-4253-a3c8-3b0f4e9e50ca, f872d745-fdeb-41e2-87d5-35af5ce5f0d4, 67816c52-c1cd-4ad1-ac3b-ef8c80c1bbae, 59b1abbd-c75c-4720-9997-f434ffd62315, efa5790c-cc47-41c1-98ea-da98083c1b6a result, different first party: 3988e863-e299-4253-a3c8-3b0f4e9e50ca, f872d745-fdeb-41e2-87d5-35af5ce5f0d4, 67816c52-c1cd-4ad1-ac3b-ef8c80c1bbae, 59b1abbd-c75c-4720-9997-f434ffd62315, efa5790c-cc47-41c1-98ea-da98083c1b6a 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: 1eeaa39c-fc45-401b-9b49-8279d558ff2c, ddfb602a-31bd-431c-ae21-423e00c649e6, 46a1a6d5-ea38-4769-9e6b-ee363fb39e1c, fc027800-35cc-4265-b354-e99377121331, 723241f8-e69b-486e-aa83-ae33e0274f29 result, different first party: 1eeaa39c-fc45-401b-9b49-8279d558ff2c, ddfb602a-31bd-431c-ae21-423e00c649e6, 46a1a6d5-ea38-4769-9e6b-ee363fb39e1c, fc027800-35cc-4265-b354-e99377121331, 723241f8-e69b-486e-aa83-ae33e0274f29 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: 72a44cd0-9935-4373-a725-705e2b10d285, 1d5f8c43-4bba-4458-8131-857c66d41a43, 78319bba-db56-4aad-8da1-16c0f38957cf, f05ef66e-6490-449f-a78d-364c6cd742bd, 54604a70-2d23-4c32-8a4e-87f8c7919646 result, different first party: 72a44cd0-9935-4373-a725-705e2b10d285, 1d5f8c43-4bba-4458-8131-857c66d41a43, 78319bba-db56-4aad-8da1-16c0f38957cf, f05ef66e-6490-449f-a78d-364c6cd742bd, 54604a70-2d23-4c32-8a4e-87f8c7919646 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: 9cea1b3b-e207-43d2-9795-9538ec6a8090, 3f736480-9a41-4d46-b833-0a48f57239a1, 008b4db4-b64b-48f4-8470-9707c690ac25, 67600378-bf10-43c1-ac1e-5bd745ce3651, 65c17a86-c49f-4b2e-a217-5320c33d8da2 result, different first party: 9cea1b3b-e207-43d2-9795-9538ec6a8090, 3f736480-9a41-4d46-b833-0a48f57239a1, 008b4db4-b64b-48f4-8470-9707c690ac25, 67600378-bf10-43c1-ac1e-5bd745ce3651, 65c17a86-c49f-4b2e-a217-5320c33d8da2 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: 10c0067e-3c96-4710-a9a4-78f1c7158393, 5b0d488a-9be5-4b2c-931d-40b1e8e79252, 31ab50a7-ee6e-427a-8a1d-fc2ef242865f, 4be77fae-05f6-4b5e-b7ca-710b2224dd00, 9ec72172-8287-402b-ab51-ebf15cc76440 result, different first party: 10c0067e-3c96-4710-a9a4-78f1c7158393, 5b0d488a-9be5-4b2c-931d-40b1e8e79252, 31ab50a7-ee6e-427a-8a1d-fc2ef242865f, 4be77fae-05f6-4b5e-b7ca-710b2224dd00, 9ec72172-8287-402b-ab51-ebf15cc76440 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: 7ee67fba-1f61-4db7-b32c-6f8455730284, aef87fb1-d870-4f1f-ae1e-72ad659287e5, 4ab9730c-6aac-4b46-bd43-8cf40979b01d, 78ffe5db-860d-4149-b578-e8bac2d612fa, f81aa39c-9ac9-4131-ba2d-6bea955ef656 result, different first party: 7ee67fba-1f61-4db7-b32c-6f8455730284, aef87fb1-d870-4f1f-ae1e-72ad659287e5, 4ab9730c-6aac-4b46-bd43-8cf40979b01d, 78ffe5db-860d-4149-b578-e8bac2d612fa, f81aa39c-9ac9-4131-ba2d-6bea955ef656 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: ac5b7e49-624f-4382-a7fd-5426c57efd53, 6f8c5cd2-3bec-46f1-bff5-7752371234a1, 36516975-7613-4d7d-ad78-31e324dfc4e6, 5aaeca7b-6ce1-45e7-a472-f838d8e5cac2, a10000c3-415d-4a49-9b9d-c2b6e2d8b3be 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: Error: no BroadcastChannel message, Error: no BroadcastChannel message, Error: no BroadcastChannel message, Error: no BroadcastChannel message, Error: no BroadcastChannel message 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: undefined test failed: true, true, true, true, true
  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: f8bf602c-f399-453d-98f1-86c1c8d561c3, b7a1c758-b9d5-4d33-8dad-c99c7241d02e result, different first party: Error: no BroadcastChannel message, Error: no BroadcastChannel message unsupported: false, false passed: true, true test failed: 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: c1bbe007-f2fe-49c1-a6b0-5f1cbf0be473, 3c08955f-04c9-4a59-96eb-137368cf9926, 61654f23-288a-4d35-90c4-240c5dfca9e4, f7e98d3c-cde5-44e8-a830-24ee3ef838ea, d290e813-c8c0-435a-8a05-6f5f18960650 result, different first party: c1bbe007-f2fe-49c1-a6b0-5f1cbf0be473, 3c08955f-04c9-4a59-96eb-137368cf9926, 61654f23-288a-4d35-90c4-240c5dfca9e4, f7e98d3c-cde5-44e8-a830-24ee3ef838ea, d290e813-c8c0-435a-8a05-6f5f18960650 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: 05ef54b0-253a-4e09-87ac-9e4144d5665e, d1c13fe2-6638-448c-9648-af0109876a35, 3d3fc963-f162-428b-9fc1-b792d4e6387e, 78214b70-de57-4120-86f9-90c6b4f4157e, 225b8760-afaa-48a7-9c36-8c9995b23d94 result, different first party: 05ef54b0-253a-4e09-87ac-9e4144d5665e, d1c13fe2-6638-448c-9648-af0109876a35, 3d3fc963-f162-428b-9fc1-b792d4e6387e, 78214b70-de57-4120-86f9-90c6b4f4157e, 225b8760-afaa-48a7-9c36-8c9995b23d94 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=${key}`]); } catch (e) { throw new Error("Unsupported"); } } read: async () => { let cache = await caches.open("supercookies"); let cacheKeys = await cache.keys(); let url = cacheKeys[0].url; return (new URL(url)).searchParams.get("key"); } result, same first party: 7156300943180247, 7156300943180247, 7156300943180247, 7156300943180247, 7156300943180247 result, different first party: Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { try { let cache = await caches.open("supercookies"); cache.addAll([`test.css?key=${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: c0b68757-a1d7-4be5-aa66-badf239865f3, e85cf5ab-9c51-45c3-84ac-1b84ddd4d47d, 02acfa8e-83e5-48bd-a812-05dee769f7a6, 017fb147-a703-4204-ac45-0425f8494e70, dccf0a0c-6066-4fed-b392-4390640df56a 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=${key}`]); } catch (e) { throw new Error("Unsupported"); } } read: async () => { let cache = await caches.open("supercookies"); let cacheKeys = await cache.keys(); let url = cacheKeys[0].url; return (new URL(url)).searchParams.get("key"); } result, same first party: 3f186427-93e7-4d81-8059-52452751aea5, 37862dbc-e093-41e7-9641-59b9f0fb4323, d161981c-6cf6-4473-97cd-27bb83a9f490, 179db3be-471b-4e1a-9a98-5b33415f6656 result, different first party: Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent. unsupported: false, false, false, false passed: true, true, true, true test failed: false, false, false, false
  write: async (key) => { try { let cache = await caches.open("supercookies"); cache.addAll([`test.css?key=${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: 7164018468744888, 7164018468744888, 7164018468744888, 7164018468744888, 7164018468744888 result, different first party: 7164018468744888, 7164018468744888, 7164018468744888, 7164018468744888, 7164018468744888 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=${key}`]); } catch (e) { throw new Error("Unsupported"); } } read: async () => { let cache = await caches.open("supercookies"); let cacheKeys = await cache.keys(); let url = cacheKeys[0].url; return (new URL(url)).searchParams.get("key"); } result, same first party: 1eeaa39c-fc45-401b-9b49-8279d558ff2c, ddfb602a-31bd-431c-ae21-423e00c649e6, 46a1a6d5-ea38-4769-9e6b-ee363fb39e1c, fc027800-35cc-4265-b354-e99377121331, 723241f8-e69b-486e-aa83-ae33e0274f29 result, different first party: Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { try { let cache = await caches.open("supercookies"); cache.addAll([`test.css?key=${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: bb0f63db-19a9-4355-9986-c80f551b9cb9, bb0f63db-19a9-4355-9986-c80f551b9cb9, bb0f63db-19a9-4355-9986-c80f551b9cb9, bb0f63db-19a9-4355-9986-c80f551b9cb9, bb0f63db-19a9-4355-9986-c80f551b9cb9 result, different first party: bb0f63db-19a9-4355-9986-c80f551b9cb9, bb0f63db-19a9-4355-9986-c80f551b9cb9, bb0f63db-19a9-4355-9986-c80f551b9cb9, bb0f63db-19a9-4355-9986-c80f551b9cb9, bb0f63db-19a9-4355-9986-c80f551b9cb9 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=${key}`]); } catch (e) { throw new Error("Unsupported"); } } read: async () => { let cache = await caches.open("supercookies"); let cacheKeys = await cache.keys(); let url = cacheKeys[0].url; return (new URL(url)).searchParams.get("key"); } result, same first party: 9cea1b3b-e207-43d2-9795-9538ec6a8090, 3f736480-9a41-4d46-b833-0a48f57239a1, 008b4db4-b64b-48f4-8470-9707c690ac25, 67600378-bf10-43c1-ac1e-5bd745ce3651, 65c17a86-c49f-4b2e-a217-5320c33d8da2 result, different first party: 9cea1b3b-e207-43d2-9795-9538ec6a8090, 3f736480-9a41-4d46-b833-0a48f57239a1, 008b4db4-b64b-48f4-8470-9707c690ac25, 67600378-bf10-43c1-ac1e-5bd745ce3651, 65c17a86-c49f-4b2e-a217-5320c33d8da2 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { try { let cache = await caches.open("supercookies"); cache.addAll([`test.css?key=${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: 5525088998911329, 5525088998911329, 5525088998911329, 5525088998911329, 5525088998911329 result, different first party: 5525088998911329, 5525088998911329, 5525088998911329, 5525088998911329, 5525088998911329 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=${key}`]); } catch (e) { throw new Error("Unsupported"); } } read: async () => { let cache = await caches.open("supercookies"); let cacheKeys = await cache.keys(); let url = cacheKeys[0].url; return (new URL(url)).searchParams.get("key"); } result, same first party: 7ee67fba-1f61-4db7-b32c-6f8455730284, aef87fb1-d870-4f1f-ae1e-72ad659287e5, 4ab9730c-6aac-4b46-bd43-8cf40979b01d, 78ffe5db-860d-4149-b578-e8bac2d612fa, f81aa39c-9ac9-4131-ba2d-6bea955ef656 result, different first party: Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent., Error: An attempt was made to break through the security policy of the user agent. unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (key) => { try { let cache = await caches.open("supercookies"); cache.addAll([`test.css?key=${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: ac5b7e49-624f-4382-a7fd-5426c57efd53, 6f8c5cd2-3bec-46f1-bff5-7752371234a1, 36516975-7613-4d7d-ad78-31e324dfc4e6, 5aaeca7b-6ce1-45e7-a472-f838d8e5cac2, a10000c3-415d-4a49-9b9d-c2b6e2d8b3be 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. result, different first party: Error: The operation is insecure., Error: The operation is insecure. unsupported: true, true passed: undefined test failed: false, false
  write: async (key) => { try { let cache = await caches.open("supercookies"); cache.addAll([`test.css?key=${key}`]); } catch (e) { throw new Error("Unsupported"); } } read: async () => { let cache = await caches.open("supercookies"); let cacheKeys = await cache.keys(); let url = cacheKeys[0].url; return (new URL(url)).searchParams.get("key"); } result, same first party: 48672960489762285, 48672960489762285, 48672960489762285, 48672960489762285, 48672960489762285 result, different first party: 48672960489762285, 48672960489762285, 48672960489762285, 48672960489762285, 48672960489762285 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { try { let cache = await caches.open("supercookies"); cache.addAll([`test.css?key=${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: 05ef54b0-253a-4e09-87ac-9e4144d5665e, d1c13fe2-6638-448c-9648-af0109876a35, 3d3fc963-f162-428b-9fc1-b792d4e6387e, 78214b70-de57-4120-86f9-90c6b4f4157e, 225b8760-afaa-48a7-9c36-8c9995b23d94 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=${secret}; SameSite=None; Secure`; } read: () => document.cookie ? document.cookie.match(/secret=(\S+)/)[1] : null result, same first party: ab51d6d6-aa87-4915-95e1-ca0cc2a653b5, 2fb9237f-833c-4be7-83bc-b62f36cb1db4, efa69fa7-bbc3-4c18-a192-154696b88c8f, 083eafc2-dd42-475d-8ac7-41ce976a5f33, 3a41099e-afbb-421e-bfe3-92dc6a4d74c7 result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => { let expiry = new Date(); expiry.setFullYear(expiry.getFullYear() + 1); document.cookie = `secret=${secret}; SameSite=None; Secure`; } read: () => document.cookie ? document.cookie.match(/secret=(\S+)/)[1] : null result, same first party: c0b68757-a1d7-4be5-aa66-badf239865f3, e85cf5ab-9c51-45c3-84ac-1b84ddd4d47d, 02acfa8e-83e5-48bd-a812-05dee769f7a6, 017fb147-a703-4204-ac45-0425f8494e70, dccf0a0c-6066-4fed-b392-4390640df56a 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=${secret}; SameSite=None; Secure`; } read: () => document.cookie ? document.cookie.match(/secret=(\S+)/)[1] : null result, same first party: 3f186427-93e7-4d81-8059-52452751aea5, 37862dbc-e093-41e7-9641-59b9f0fb4323, d161981c-6cf6-4473-97cd-27bb83a9f490, 179db3be-471b-4e1a-9a98-5b33415f6656 result, different first party: , , , unsupported: false, false, false, false passed: true, true, true, true test failed: false, false, false, false
  write: (secret) => { let expiry = new Date(); expiry.setFullYear(expiry.getFullYear() + 1); document.cookie = `secret=${secret}; SameSite=None; Secure`; } read: () => document.cookie ? document.cookie.match(/secret=(\S+)/)[1] : null result, same first party: 3988e863-e299-4253-a3c8-3b0f4e9e50ca, f872d745-fdeb-41e2-87d5-35af5ce5f0d4, 67816c52-c1cd-4ad1-ac3b-ef8c80c1bbae, 59b1abbd-c75c-4720-9997-f434ffd62315, efa5790c-cc47-41c1-98ea-da98083c1b6a result, different first party: 3988e863-e299-4253-a3c8-3b0f4e9e50ca, f872d745-fdeb-41e2-87d5-35af5ce5f0d4, 67816c52-c1cd-4ad1-ac3b-ef8c80c1bbae, 59b1abbd-c75c-4720-9997-f434ffd62315, efa5790c-cc47-41c1-98ea-da98083c1b6a 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=${secret}; SameSite=None; Secure`; } read: () => document.cookie ? document.cookie.match(/secret=(\S+)/)[1] : null result, same first party: 1eeaa39c-fc45-401b-9b49-8279d558ff2c, ddfb602a-31bd-431c-ae21-423e00c649e6, 46a1a6d5-ea38-4769-9e6b-ee363fb39e1c, fc027800-35cc-4265-b354-e99377121331, 723241f8-e69b-486e-aa83-ae33e0274f29 result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => { let expiry = new Date(); expiry.setFullYear(expiry.getFullYear() + 1); document.cookie = `secret=${secret}; SameSite=None; Secure`; } read: () => document.cookie ? document.cookie.match(/secret=(\S+)/)[1] : null result, same first party: 72a44cd0-9935-4373-a725-705e2b10d285, 1d5f8c43-4bba-4458-8131-857c66d41a43, 78319bba-db56-4aad-8da1-16c0f38957cf, f05ef66e-6490-449f-a78d-364c6cd742bd, 54604a70-2d23-4c32-8a4e-87f8c7919646 result, different first party: 72a44cd0-9935-4373-a725-705e2b10d285, 1d5f8c43-4bba-4458-8131-857c66d41a43, 78319bba-db56-4aad-8da1-16c0f38957cf, f05ef66e-6490-449f-a78d-364c6cd742bd, 54604a70-2d23-4c32-8a4e-87f8c7919646 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=${secret}; SameSite=None; Secure`; } read: () => document.cookie ? document.cookie.match(/secret=(\S+)/)[1] : null result, same first party: 9cea1b3b-e207-43d2-9795-9538ec6a8090, 3f736480-9a41-4d46-b833-0a48f57239a1, 008b4db4-b64b-48f4-8470-9707c690ac25, 67600378-bf10-43c1-ac1e-5bd745ce3651, 65c17a86-c49f-4b2e-a217-5320c33d8da2 result, different first party: 9cea1b3b-e207-43d2-9795-9538ec6a8090, 3f736480-9a41-4d46-b833-0a48f57239a1, 008b4db4-b64b-48f4-8470-9707c690ac25, 67600378-bf10-43c1-ac1e-5bd745ce3651, 65c17a86-c49f-4b2e-a217-5320c33d8da2 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { let expiry = new Date(); expiry.setFullYear(expiry.getFullYear() + 1); document.cookie = `secret=${secret}; SameSite=None; Secure`; } read: () => document.cookie ? document.cookie.match(/secret=(\S+)/)[1] : null result, same first party: 10c0067e-3c96-4710-a9a4-78f1c7158393, 5b0d488a-9be5-4b2c-931d-40b1e8e79252, 31ab50a7-ee6e-427a-8a1d-fc2ef242865f, 4be77fae-05f6-4b5e-b7ca-710b2224dd00, 9ec72172-8287-402b-ab51-ebf15cc76440 result, different first party: 10c0067e-3c96-4710-a9a4-78f1c7158393, 5b0d488a-9be5-4b2c-931d-40b1e8e79252, 31ab50a7-ee6e-427a-8a1d-fc2ef242865f, 4be77fae-05f6-4b5e-b7ca-710b2224dd00, 9ec72172-8287-402b-ab51-ebf15cc76440 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=${secret}; SameSite=None; Secure`; } read: () => document.cookie ? document.cookie.match(/secret=(\S+)/)[1] : null result, same first party: 7ee67fba-1f61-4db7-b32c-6f8455730284, aef87fb1-d870-4f1f-ae1e-72ad659287e5, 4ab9730c-6aac-4b46-bd43-8cf40979b01d, 78ffe5db-860d-4149-b578-e8bac2d612fa, f81aa39c-9ac9-4131-ba2d-6bea955ef656 result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: (secret) => { let expiry = new Date(); expiry.setFullYear(expiry.getFullYear() + 1); document.cookie = `secret=${secret}; SameSite=None; Secure`; } read: () => document.cookie ? document.cookie.match(/secret=(\S+)/)[1] : null result, same first party: ac5b7e49-624f-4382-a7fd-5426c57efd53, 6f8c5cd2-3bec-46f1-bff5-7752371234a1, 36516975-7613-4d7d-ad78-31e324dfc4e6, 5aaeca7b-6ce1-45e7-a472-f838d8e5cac2, a10000c3-415d-4a49-9b9d-c2b6e2d8b3be 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: f8bf602c-f399-453d-98f1-86c1c8d561c3, b7a1c758-b9d5-4d33-8dad-c99c7241d02e result, different first party: , unsupported: false, false passed: true, true test failed: false, false
  write: (secret) => { let expiry = new Date(); expiry.setFullYear(expiry.getFullYear() + 1); document.cookie = `secret=${secret}; SameSite=None; Secure`; } read: () => document.cookie ? document.cookie.match(/secret=(\S+)/)[1] : null result, same first party: c1bbe007-f2fe-49c1-a6b0-5f1cbf0be473, 3c08955f-04c9-4a59-96eb-137368cf9926, 61654f23-288a-4d35-90c4-240c5dfca9e4, f7e98d3c-cde5-44e8-a830-24ee3ef838ea, d290e813-c8c0-435a-8a05-6f5f18960650 result, different first party: c1bbe007-f2fe-49c1-a6b0-5f1cbf0be473, 3c08955f-04c9-4a59-96eb-137368cf9926, 61654f23-288a-4d35-90c4-240c5dfca9e4, f7e98d3c-cde5-44e8-a830-24ee3ef838ea, d290e813-c8c0-435a-8a05-6f5f18960650 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: (secret) => { let expiry = new Date(); expiry.setFullYear(expiry.getFullYear() + 1); document.cookie = `secret=${secret}; SameSite=None; Secure`; } read: () => document.cookie ? document.cookie.match(/secret=(\S+)/)[1] : null result, same first party: 05ef54b0-253a-4e09-87ac-9e4144d5665e, d1c13fe2-6638-448c-9648-af0109876a35, 3d3fc963-f162-428b-9fc1-b792d4e6387e, 78214b70-de57-4120-86f9-90c6b4f4157e, 225b8760-afaa-48a7-9c36-8c9995b23d94 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_7542662045741113, fake_7799147356259923, fake_3067530089584103, fake_8192052309701114, fake_053437470776045215 result, different first party: fake_5417767966288025, fake_8304828368859363, fake_570891441586576, fake_8704573054785731, fake_8436178247971706 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_7207807085801392, fake_139871698188603, fake_3897644274885308, fake_8135086826350848, fake_19474057572240278 result, different first party: fake_8118270127516252, fake_5322518067132711, fake_6103521584041713, fake_6079390474229001, fake_12040883628537791 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_7098588604752172, fake_5433136436146442, fake_647148757308577, fake_7318171851027984 result, different first party: fake_7098588604752172, fake_5433136436146442, fake_647148757308577, fake_7318171851027984 unsupported: false, false, false, false passed: false, false, false, false test failed: 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_05631710203419926, fake_9175138677524528, fake_5610997920194261, fake_056910319018832256, fake_19608035426569748 result, different first party: fake_05631710203419926, fake_9175138677524528, fake_5610997920194261, fake_056910319018832256, fake_19608035426569748 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_3809539854926187, fake_3093564653040417, fake_6168266170913785, fake_4009034821402846, fake_6070092718906288 result, different first party: fake_3809539854926187, fake_3093564653040417, fake_6168266170913785, fake_4009034821402846, fake_6070092718906288 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_15673545801098077, fake_7707310586076734, fake_7961305150873266, fake_8339204419221964, fake_6224847819576171 result, different first party: fake_15673545801098077, fake_7707310586076734, fake_7961305150873266, fake_8339204419221964, fake_6224847819576171 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_34310560870472995, fake_3654487330059857, fake_6290333475336018, fake_8884616667669734, fake_3723467170872272 result, different first party: fake_34310560870472995, fake_3654487330059857, fake_6290333475336018, fake_8884616667669734, fake_3723467170872272 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_7332497546004064, fake_9494396318028435, fake_751037185414515, fake_2410883353210831, fake_9896617504577456 result, different first party: fake_7332497546004064, fake_9494396318028435, fake_751037185414515, fake_2410883353210831, fake_9896617504577456 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_07136269808323314, fake_32307335567872775, fake_48232403078124353, fake_7832487085613089, fake_22042649377157253 result, different first party: fake_07136269808323314, fake_32307335567872775, fake_48232403078124353, fake_7832487085613089, fake_22042649377157253 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_2402502053499418, fake_9022317513684364, fake_9037702161542092, fake_22916238528913135, fake_9646566935023342 result, different first party: fake_5497026073674807, fake_6035352067537947, fake_5584408391173292, fake_3231459074846652, fake_7433366589616632 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_20728261052012997, fake_05535356358101229, fake_7998339834901513, fake_7653068579042064, fake_8836476659490031 result, different first party: fake_16204442873805314, fake_7645432658605356, fake_6426281594679686, fake_7195595696741373, fake_8262158146850038 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_8825089865615343, fake_3217782646176852 result, different first party: fake_47704617502797975, fake_5317389278090037 unsupported: false, false passed: true, true test failed: 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_13151071444099793, fake_21213260798580635, fake_22466175315435066, fake_9717993711302968, fake_19958823804698245 result, different first party: fake_6300579657373209, fake_21213260798580635, fake_22466175315435066, fake_9717993711302968, fake_04341777743533326 unsupported: false, false, false, false, false passed: true, false, false, 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_8400907537233191, fake_6131219247346777, fake_09160038494541056, fake_10505215111133626, fake_7584816126527338 result, different first party: fake_9675680322870139, fake_45689751631817677, fake_39224670966829667, fake_9544945661527695, fake_787845131806723 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 result, different first party: 2, 2, 2, 2 unsupported: false, false, false, false passed: true, true, true, true test failed: 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: 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 result, different first party: 2, 2 unsupported: false, false passed: true, true test failed: 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 result, different first party: 2, 2, 2, 2 unsupported: false, false, false, false passed: true, true, true, true test failed: 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 result, different first party: 2, 2 unsupported: false, false passed: true, true test failed: 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 result, different first party: 1, 1, 1, 1 unsupported: false, false, false, false passed: false, false, false, false test failed: 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: 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 result, different first party: 2, 2 unsupported: false, false passed: true, true test failed: 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=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h1.arthuredelstein.net:8901/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: ab51d6d6-aa87-4915-95e1-ca0cc2a653b5, 2fb9237f-833c-4be7-83bc-b62f36cb1db4, efa69fa7-bbc3-4c18-a192-154696b88c8f, 083eafc2-dd42-475d-8ac7-41ce976a5f33, 3a41099e-afbb-421e-bfe3-92dc6a4d74c7 result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h1.arthuredelstein.net:8901/?mode=write&secret=${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: c0b68757-a1d7-4be5-aa66-badf239865f3, e85cf5ab-9c51-45c3-84ac-1b84ddd4d47d, 02acfa8e-83e5-48bd-a812-05dee769f7a6, 017fb147-a703-4204-ac45-0425f8494e70, dccf0a0c-6066-4fed-b392-4390640df56a 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=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h1.arthuredelstein.net:8901/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: 3f186427-93e7-4d81-8059-52452751aea5, 37862dbc-e093-41e7-9641-59b9f0fb4323, d161981c-6cf6-4473-97cd-27bb83a9f490, 179db3be-471b-4e1a-9a98-5b33415f6656 result, different first party: , , , unsupported: false, false, false, false passed: true, true, true, true test failed: false, false, false, false
  write: async (secret) => { await fetch(`https://h1.arthuredelstein.net:8901/?mode=write&secret=${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: 3988e863-e299-4253-a3c8-3b0f4e9e50ca, f872d745-fdeb-41e2-87d5-35af5ce5f0d4, 67816c52-c1cd-4ad1-ac3b-ef8c80c1bbae, 59b1abbd-c75c-4720-9997-f434ffd62315, efa5790c-cc47-41c1-98ea-da98083c1b6a 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=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h1.arthuredelstein.net:8901/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: 1eeaa39c-fc45-401b-9b49-8279d558ff2c, ddfb602a-31bd-431c-ae21-423e00c649e6, 46a1a6d5-ea38-4769-9e6b-ee363fb39e1c, fc027800-35cc-4265-b354-e99377121331, 723241f8-e69b-486e-aa83-ae33e0274f29 result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h1.arthuredelstein.net:8901/?mode=write&secret=${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: 72a44cd0-9935-4373-a725-705e2b10d285, 1d5f8c43-4bba-4458-8131-857c66d41a43, 78319bba-db56-4aad-8da1-16c0f38957cf, f05ef66e-6490-449f-a78d-364c6cd742bd, 54604a70-2d23-4c32-8a4e-87f8c7919646 result, different first party: 72a44cd0-9935-4373-a725-705e2b10d285, 1d5f8c43-4bba-4458-8131-857c66d41a43, 78319bba-db56-4aad-8da1-16c0f38957cf, f05ef66e-6490-449f-a78d-364c6cd742bd, 54604a70-2d23-4c32-8a4e-87f8c7919646 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=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h1.arthuredelstein.net:8901/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: 9cea1b3b-e207-43d2-9795-9538ec6a8090, 3f736480-9a41-4d46-b833-0a48f57239a1, 008b4db4-b64b-48f4-8470-9707c690ac25, 67600378-bf10-43c1-ac1e-5bd745ce3651, 65c17a86-c49f-4b2e-a217-5320c33d8da2 result, different first party: 9cea1b3b-e207-43d2-9795-9538ec6a8090, 3f736480-9a41-4d46-b833-0a48f57239a1, 008b4db4-b64b-48f4-8470-9707c690ac25, 67600378-bf10-43c1-ac1e-5bd745ce3651, 65c17a86-c49f-4b2e-a217-5320c33d8da2 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h1.arthuredelstein.net:8901/?mode=write&secret=${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: 10c0067e-3c96-4710-a9a4-78f1c7158393, 5b0d488a-9be5-4b2c-931d-40b1e8e79252, 31ab50a7-ee6e-427a-8a1d-fc2ef242865f, 4be77fae-05f6-4b5e-b7ca-710b2224dd00, 9ec72172-8287-402b-ab51-ebf15cc76440 result, different first party: 10c0067e-3c96-4710-a9a4-78f1c7158393, 5b0d488a-9be5-4b2c-931d-40b1e8e79252, 31ab50a7-ee6e-427a-8a1d-fc2ef242865f, 4be77fae-05f6-4b5e-b7ca-710b2224dd00, 9ec72172-8287-402b-ab51-ebf15cc76440 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=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h1.arthuredelstein.net:8901/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: 7ee67fba-1f61-4db7-b32c-6f8455730284, aef87fb1-d870-4f1f-ae1e-72ad659287e5, 4ab9730c-6aac-4b46-bd43-8cf40979b01d, 78ffe5db-860d-4149-b578-e8bac2d612fa, f81aa39c-9ac9-4131-ba2d-6bea955ef656 result, different first party: 7ee67fba-1f61-4db7-b32c-6f8455730284, aef87fb1-d870-4f1f-ae1e-72ad659287e5, 4ab9730c-6aac-4b46-bd43-8cf40979b01d, 78ffe5db-860d-4149-b578-e8bac2d612fa, f81aa39c-9ac9-4131-ba2d-6bea955ef656 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h1.arthuredelstein.net:8901/?mode=write&secret=${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: ac5b7e49-624f-4382-a7fd-5426c57efd53, 6f8c5cd2-3bec-46f1-bff5-7752371234a1, 36516975-7613-4d7d-ad78-31e324dfc4e6, 5aaeca7b-6ce1-45e7-a472-f838d8e5cac2, a10000c3-415d-4a49-9b9d-c2b6e2d8b3be result, different first party: ac5b7e49-624f-4382-a7fd-5426c57efd53, 6f8c5cd2-3bec-46f1-bff5-7752371234a1, 36516975-7613-4d7d-ad78-31e324dfc4e6, 5aaeca7b-6ce1-45e7-a472-f838d8e5cac2, a10000c3-415d-4a49-9b9d-c2b6e2d8b3be 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: f8bf602c-f399-453d-98f1-86c1c8d561c3, b7a1c758-b9d5-4d33-8dad-c99c7241d02e result, different first party: , unsupported: false, false passed: true, true test failed: false, false
  write: async (secret) => { await fetch(`https://h1.arthuredelstein.net:8901/?mode=write&secret=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h1.arthuredelstein.net:8901/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: c1bbe007-f2fe-49c1-a6b0-5f1cbf0be473, 3c08955f-04c9-4a59-96eb-137368cf9926, 61654f23-288a-4d35-90c4-240c5dfca9e4, f7e98d3c-cde5-44e8-a830-24ee3ef838ea, d290e813-c8c0-435a-8a05-6f5f18960650 result, different first party: c1bbe007-f2fe-49c1-a6b0-5f1cbf0be473, 3c08955f-04c9-4a59-96eb-137368cf9926, 61654f23-288a-4d35-90c4-240c5dfca9e4, f7e98d3c-cde5-44e8-a830-24ee3ef838ea, d290e813-c8c0-435a-8a05-6f5f18960650 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h1.arthuredelstein.net:8901/?mode=write&secret=${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: 05ef54b0-253a-4e09-87ac-9e4144d5665e, d1c13fe2-6638-448c-9648-af0109876a35, 3d3fc963-f162-428b-9fc1-b792d4e6387e, 78214b70-de57-4120-86f9-90c6b4f4157e, 225b8760-afaa-48a7-9c36-8c9995b23d94 result, different first party: 05ef54b0-253a-4e09-87ac-9e4144d5665e, d1c13fe2-6638-448c-9648-af0109876a35, 3d3fc963-f162-428b-9fc1-b792d4e6387e, 78214b70-de57-4120-86f9-90c6b4f4157e, 225b8760-afaa-48a7-9c36-8c9995b23d94 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=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h2.arthuredelstein.net:8902/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: ab51d6d6-aa87-4915-95e1-ca0cc2a653b5, 2fb9237f-833c-4be7-83bc-b62f36cb1db4, efa69fa7-bbc3-4c18-a192-154696b88c8f, 083eafc2-dd42-475d-8ac7-41ce976a5f33, 3a41099e-afbb-421e-bfe3-92dc6a4d74c7 result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h2.arthuredelstein.net:8902/?mode=write&secret=${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: c0b68757-a1d7-4be5-aa66-badf239865f3, e85cf5ab-9c51-45c3-84ac-1b84ddd4d47d, 02acfa8e-83e5-48bd-a812-05dee769f7a6, 017fb147-a703-4204-ac45-0425f8494e70, dccf0a0c-6066-4fed-b392-4390640df56a 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=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h2.arthuredelstein.net:8902/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: 3f186427-93e7-4d81-8059-52452751aea5, 37862dbc-e093-41e7-9641-59b9f0fb4323, d161981c-6cf6-4473-97cd-27bb83a9f490, 179db3be-471b-4e1a-9a98-5b33415f6656 result, different first party: , , , unsupported: false, false, false, false passed: true, true, true, true test failed: false, false, false, false
  write: async (secret) => { await fetch(`https://h2.arthuredelstein.net:8902/?mode=write&secret=${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: 3988e863-e299-4253-a3c8-3b0f4e9e50ca, f872d745-fdeb-41e2-87d5-35af5ce5f0d4, 67816c52-c1cd-4ad1-ac3b-ef8c80c1bbae, 59b1abbd-c75c-4720-9997-f434ffd62315, efa5790c-cc47-41c1-98ea-da98083c1b6a 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=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h2.arthuredelstein.net:8902/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: 1eeaa39c-fc45-401b-9b49-8279d558ff2c, ddfb602a-31bd-431c-ae21-423e00c649e6, 46a1a6d5-ea38-4769-9e6b-ee363fb39e1c, fc027800-35cc-4265-b354-e99377121331, 723241f8-e69b-486e-aa83-ae33e0274f29 result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h2.arthuredelstein.net:8902/?mode=write&secret=${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: 72a44cd0-9935-4373-a725-705e2b10d285, 1d5f8c43-4bba-4458-8131-857c66d41a43, 78319bba-db56-4aad-8da1-16c0f38957cf, f05ef66e-6490-449f-a78d-364c6cd742bd, 54604a70-2d23-4c32-8a4e-87f8c7919646 result, different first party: 72a44cd0-9935-4373-a725-705e2b10d285, 1d5f8c43-4bba-4458-8131-857c66d41a43, 78319bba-db56-4aad-8da1-16c0f38957cf, f05ef66e-6490-449f-a78d-364c6cd742bd, 54604a70-2d23-4c32-8a4e-87f8c7919646 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=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h2.arthuredelstein.net:8902/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: 9cea1b3b-e207-43d2-9795-9538ec6a8090, 3f736480-9a41-4d46-b833-0a48f57239a1, 008b4db4-b64b-48f4-8470-9707c690ac25, 67600378-bf10-43c1-ac1e-5bd745ce3651, 65c17a86-c49f-4b2e-a217-5320c33d8da2 result, different first party: 9cea1b3b-e207-43d2-9795-9538ec6a8090, 3f736480-9a41-4d46-b833-0a48f57239a1, 008b4db4-b64b-48f4-8470-9707c690ac25, 67600378-bf10-43c1-ac1e-5bd745ce3651, 65c17a86-c49f-4b2e-a217-5320c33d8da2 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h2.arthuredelstein.net:8902/?mode=write&secret=${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: 10c0067e-3c96-4710-a9a4-78f1c7158393, 5b0d488a-9be5-4b2c-931d-40b1e8e79252, 31ab50a7-ee6e-427a-8a1d-fc2ef242865f, 4be77fae-05f6-4b5e-b7ca-710b2224dd00, 9ec72172-8287-402b-ab51-ebf15cc76440 result, different first party: 10c0067e-3c96-4710-a9a4-78f1c7158393, 5b0d488a-9be5-4b2c-931d-40b1e8e79252, 31ab50a7-ee6e-427a-8a1d-fc2ef242865f, 4be77fae-05f6-4b5e-b7ca-710b2224dd00, 9ec72172-8287-402b-ab51-ebf15cc76440 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=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h2.arthuredelstein.net:8902/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: 7ee67fba-1f61-4db7-b32c-6f8455730284, aef87fb1-d870-4f1f-ae1e-72ad659287e5, 4ab9730c-6aac-4b46-bd43-8cf40979b01d, 78ffe5db-860d-4149-b578-e8bac2d612fa, f81aa39c-9ac9-4131-ba2d-6bea955ef656 result, different first party: 7ee67fba-1f61-4db7-b32c-6f8455730284, aef87fb1-d870-4f1f-ae1e-72ad659287e5, 4ab9730c-6aac-4b46-bd43-8cf40979b01d, 78ffe5db-860d-4149-b578-e8bac2d612fa, f81aa39c-9ac9-4131-ba2d-6bea955ef656 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h2.arthuredelstein.net:8902/?mode=write&secret=${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: ac5b7e49-624f-4382-a7fd-5426c57efd53, 6f8c5cd2-3bec-46f1-bff5-7752371234a1, 36516975-7613-4d7d-ad78-31e324dfc4e6, 5aaeca7b-6ce1-45e7-a472-f838d8e5cac2, a10000c3-415d-4a49-9b9d-c2b6e2d8b3be result, different first party: ac5b7e49-624f-4382-a7fd-5426c57efd53, 6f8c5cd2-3bec-46f1-bff5-7752371234a1, 36516975-7613-4d7d-ad78-31e324dfc4e6, 5aaeca7b-6ce1-45e7-a472-f838d8e5cac2, a10000c3-415d-4a49-9b9d-c2b6e2d8b3be 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: f8bf602c-f399-453d-98f1-86c1c8d561c3, b7a1c758-b9d5-4d33-8dad-c99c7241d02e result, different first party: , unsupported: false, false passed: true, true test failed: false, false
  write: async (secret) => { await fetch(`https://h2.arthuredelstein.net:8902/?mode=write&secret=${secret}`, {cache: "no-store"}); } read: async () => { let response = await fetch(`https://h2.arthuredelstein.net:8902/?mode=read`, {cache: "no-store"}); return await response.text(); } result, same first party: c1bbe007-f2fe-49c1-a6b0-5f1cbf0be473, 3c08955f-04c9-4a59-96eb-137368cf9926, 61654f23-288a-4d35-90c4-240c5dfca9e4, f7e98d3c-cde5-44e8-a830-24ee3ef838ea, d290e813-c8c0-435a-8a05-6f5f18960650 result, different first party: c1bbe007-f2fe-49c1-a6b0-5f1cbf0be473, 3c08955f-04c9-4a59-96eb-137368cf9926, 61654f23-288a-4d35-90c4-240c5dfca9e4, f7e98d3c-cde5-44e8-a830-24ee3ef838ea, d290e813-c8c0-435a-8a05-6f5f18960650 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (secret) => { await fetch(`https://h2.arthuredelstein.net:8902/?mode=write&secret=${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: 05ef54b0-253a-4e09-87ac-9e4144d5665e, d1c13fe2-6638-448c-9648-af0109876a35, 3d3fc963-f162-428b-9fc1-b792d4e6387e, 78214b70-de57-4120-86f9-90c6b4f4157e, 225b8760-afaa-48a7-9c36-8c9995b23d94 result, different first party: 05ef54b0-253a-4e09-87ac-9e4144d5665e, d1c13fe2-6638-448c-9648-af0109876a35, 3d3fc963-f162-428b-9fc1-b792d4e6387e, 78214b70-de57-4120-86f9-90c6b4f4157e, 225b8760-afaa-48a7-9c36-8c9995b23d94 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: d5d7459a3ce12693fbd2df30263c0977, ce73b4da8da2b4732d2426be869731c7, 4e4fca128736930369a8135273142332, 56b7f42e07e0f8720bc05475dc7f4c06, 6e215d3013dd6200d93c670f68f90660 result, different first party: 54a2bec767b3f53204c7276bca786806, e6359c5eefbfbc332ccdee33e49ec23c, 0367d5d06237aa42541d0a5a4e565268, 9ed54948ecb63b640070d3ddf80e8f6b, 8cb389d84115063eb0d047be1bb0c10a 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: e9f203d710a800ff80a1396285eda49c, 3a39d91842829eb8c45b7de788598436, 3362056bcdd9d3cb030d1d6b92a77fa0, bf79dbb7198fd19c30ceded19f83f604, fcbcfe7993c24abf9f6097732eab8d10 result, different first party: d489335b8c2aa4fc3fddfd821443b14f, e6dd25f854ae9de8bce1156e35f87900, 5b8dce03969e451a851ead6988037770, d7074e3443464101de0868dca6c65ece, da24015a03037060d071395aa5600787 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 passed: undefined test failed: 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: 8f3280330ed7383d547d2cf12ed5d51a, 59367e31ed2e2748d5adee0029d1b8e3, 8a87a8e0c3d5f9ccb5d50cee92ee21de, f9e4f3e929652203874592f25c9a0ded, 37e72d6121baf75d17dde5e7621ba118 result, different first party: 0be8cb33e92be02e3043b18cdedc06a5, 57b30adfec6f0d7bd8aaf11530d9bc69, 2352c6b055626e71ee98fbcea6caf25b, 1a09db002ff240545e897232cf11f6a8, 6ba8f21a036b415b488a538bb189d961 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: 596ec262b61886248d9c3c269733f55a, a658f888f315fd0e8a835ee766d07dd8, 02747f8e568cfbd4e3780e9230938080, 6b8485a34aac60b80166302e90939a46, 2a20ffcf4637dbc9984976cac8f69f02 result, different first party: 1a9cff09d12a20b85d5a5fc53a9abf50, 1e1acd162d2fbbb878508217cee880fb, c2d86c198ee9a8fb9efcefe35bbb972e, 3c15fed7874fec9e1eb7369d4d2b5074, fc7e5909088f53c5733bc83f2ff611be 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: 78325c2b9e391e293f8394fbfa804632, 52363e55e9d239ec519fc050be249bc1, 40128c51323be6084efdc05d4fbf0a3d, add673ab866521da6db843872b73f9de, 108ebfe33edcdeafb8ef9030fdb21d09 result, different first party: 78325c2b9e391e293f8394fbfa804632, 52363e55e9d239ec519fc050be249bc1, 40128c51323be6084efdc05d4fbf0a3d, add673ab866521da6db843872b73f9de, 108ebfe33edcdeafb8ef9030fdb21d09 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: fe4d336512c5e76743d61a2fa3d67034, a0d66556ae39c77cfb68c35019010fe4, 5a2ed8fa0ee9442c1aa0ac3720465b39, 1d6943a115150e66a0154be6596c6fcd, 3e779f4bd58c19607d15ed068c72f995 result, different first party: fe4d336512c5e76743d61a2fa3d67034, a0d66556ae39c77cfb68c35019010fe4, 5a2ed8fa0ee9442c1aa0ac3720465b39, 1d6943a115150e66a0154be6596c6fcd, 3e779f4bd58c19607d15ed068c72f995 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: f270f3e74ec8605f2a8bc07e3fc9fb24, 4f2d70c9cb681a60779a2ec79ed1ee00, 4908b1cd403260cf70004ab5649790ea, b665c7dc91eda4f40ea5bba20d247b96, d9c52f4b59132519665317a2f0e96ed4 result, different first party: f270f3e74ec8605f2a8bc07e3fc9fb24, 4f2d70c9cb681a60779a2ec79ed1ee00, 4908b1cd403260cf70004ab5649790ea, b665c7dc91eda4f40ea5bba20d247b96, d9c52f4b59132519665317a2f0e96ed4 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: 0bce0b0c5cd4369b985c1b3b61ef648e, 9a912b803141e5d859d5a8b9ff064506, 379bed3ed08dffd66be7c4271acd5ffe, cc5628051f9b15bfa43e061665cc5abc, 80b278d016c6e6b08d98d2ecd5fa6d82 result, different first party: 0bce0b0c5cd4369b985c1b3b61ef648e, 9a912b803141e5d859d5a8b9ff064506, 379bed3ed08dffd66be7c4271acd5ffe, cc5628051f9b15bfa43e061665cc5abc, 80b278d016c6e6b08d98d2ecd5fa6d82 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 passed: undefined test failed: 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: 54015fd9677c9255c1a8c84faa67b3c9, aab8cc7261a7c7096751d2cd1804e34d, 24ed5c544004490e6baf2ca79921951d, b8a004cbcb18fa3ed7b670e8d28ef4cd, 71b3235667efa1ffb614612f63128588 result, different first party: 54015fd9677c9255c1a8c84faa67b3c9, aab8cc7261a7c7096751d2cd1804e34d, 24ed5c544004490e6baf2ca79921951d, b8a004cbcb18fa3ed7b670e8d28ef4cd, 71b3235667efa1ffb614612f63128588 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: 9b47d4a5c35dd40c20b19b0532744d96, 8912c030f457bce0b9f4da8b58eff0fa, a4fbc8e4175bbf47cc3b2df8d7c13afb, 728d1275665e269702e5b911cdd8cf3d, 3ef17cbdf0cc800397f912b55e64084f result, different first party: 9b47d4a5c35dd40c20b19b0532744d96, 8912c030f457bce0b9f4da8b58eff0fa, a4fbc8e4175bbf47cc3b2df8d7c13afb, 728d1275665e269702e5b911cdd8cf3d, 3ef17cbdf0cc800397f912b55e64084f 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 result, different first party: image load succeeded, image load succeeded, image load succeeded, image load succeeded unsupported: false, false, false, false passed: false, false, false, false test failed: 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: 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 result, different first party: Error: image load failed, Error: image load failed unsupported: true, true passed: undefined test failed: 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 result, different first party: 2, 2, 2, 2 unsupported: false, false, false, false passed: true, true, true, true test failed: 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 result, different first party: 2, 2 unsupported: false, false passed: true, true test failed: 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 result, different first party: 1, 1, 1, 1 unsupported: false, false, false, false passed: false, false, false, false test failed: 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: 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 result, different first party: 2, 2 unsupported: false, false passed: true, true test failed: 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: ab51d6d6-aa87-4915-95e1-ca0cc2a653b5, 2fb9237f-833c-4be7-83bc-b62f36cb1db4, efa69fa7-bbc3-4c18-a192-154696b88c8f, 083eafc2-dd42-475d-8ac7-41ce976a5f33, 3a41099e-afbb-421e-bfe3-92dc6a4d74c7 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: c0b68757-a1d7-4be5-aa66-badf239865f3, e85cf5ab-9c51-45c3-84ac-1b84ddd4d47d, 02acfa8e-83e5-48bd-a812-05dee769f7a6, 017fb147-a703-4204-ac45-0425f8494e70, dccf0a0c-6066-4fed-b392-4390640df56a 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: 3f186427-93e7-4d81-8059-52452751aea5, 37862dbc-e093-41e7-9641-59b9f0fb4323, d161981c-6cf6-4473-97cd-27bb83a9f490, 179db3be-471b-4e1a-9a98-5b33415f6656 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. unsupported: false, false, false, false passed: true, true, true, true test failed: 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: 3988e863-e299-4253-a3c8-3b0f4e9e50ca, f872d745-fdeb-41e2-87d5-35af5ce5f0d4, 67816c52-c1cd-4ad1-ac3b-ef8c80c1bbae, 59b1abbd-c75c-4720-9997-f434ffd62315, efa5790c-cc47-41c1-98ea-da98083c1b6a result, different first party: 3988e863-e299-4253-a3c8-3b0f4e9e50ca, f872d745-fdeb-41e2-87d5-35af5ce5f0d4, 67816c52-c1cd-4ad1-ac3b-ef8c80c1bbae, 59b1abbd-c75c-4720-9997-f434ffd62315, efa5790c-cc47-41c1-98ea-da98083c1b6a 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: 1eeaa39c-fc45-401b-9b49-8279d558ff2c, ddfb602a-31bd-431c-ae21-423e00c649e6, 46a1a6d5-ea38-4769-9e6b-ee363fb39e1c, fc027800-35cc-4265-b354-e99377121331, 723241f8-e69b-486e-aa83-ae33e0274f29 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: 72a44cd0-9935-4373-a725-705e2b10d285, 1d5f8c43-4bba-4458-8131-857c66d41a43, 78319bba-db56-4aad-8da1-16c0f38957cf, f05ef66e-6490-449f-a78d-364c6cd742bd, 54604a70-2d23-4c32-8a4e-87f8c7919646 result, different first party: 72a44cd0-9935-4373-a725-705e2b10d285, 1d5f8c43-4bba-4458-8131-857c66d41a43, 78319bba-db56-4aad-8da1-16c0f38957cf, f05ef66e-6490-449f-a78d-364c6cd742bd, 54604a70-2d23-4c32-8a4e-87f8c7919646 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: 9cea1b3b-e207-43d2-9795-9538ec6a8090, 3f736480-9a41-4d46-b833-0a48f57239a1, 008b4db4-b64b-48f4-8470-9707c690ac25, 67600378-bf10-43c1-ac1e-5bd745ce3651, 65c17a86-c49f-4b2e-a217-5320c33d8da2 result, different first party: 9cea1b3b-e207-43d2-9795-9538ec6a8090, 3f736480-9a41-4d46-b833-0a48f57239a1, 008b4db4-b64b-48f4-8470-9707c690ac25, 67600378-bf10-43c1-ac1e-5bd745ce3651, 65c17a86-c49f-4b2e-a217-5320c33d8da2 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: 10c0067e-3c96-4710-a9a4-78f1c7158393, 5b0d488a-9be5-4b2c-931d-40b1e8e79252, 31ab50a7-ee6e-427a-8a1d-fc2ef242865f, 4be77fae-05f6-4b5e-b7ca-710b2224dd00, 9ec72172-8287-402b-ab51-ebf15cc76440 result, different first party: 10c0067e-3c96-4710-a9a4-78f1c7158393, 5b0d488a-9be5-4b2c-931d-40b1e8e79252, 31ab50a7-ee6e-427a-8a1d-fc2ef242865f, 4be77fae-05f6-4b5e-b7ca-710b2224dd00, 9ec72172-8287-402b-ab51-ebf15cc76440 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: 7ee67fba-1f61-4db7-b32c-6f8455730284, aef87fb1-d870-4f1f-ae1e-72ad659287e5, 4ab9730c-6aac-4b46-bd43-8cf40979b01d, 78ffe5db-860d-4149-b578-e8bac2d612fa, f81aa39c-9ac9-4131-ba2d-6bea955ef656 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: ac5b7e49-624f-4382-a7fd-5426c57efd53, 6f8c5cd2-3bec-46f1-bff5-7752371234a1, 36516975-7613-4d7d-ad78-31e324dfc4e6, 5aaeca7b-6ce1-45e7-a472-f838d8e5cac2, a10000c3-415d-4a49-9b9d-c2b6e2d8b3be 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. 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. unsupported: true, true passed: undefined test failed: 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: c1bbe007-f2fe-49c1-a6b0-5f1cbf0be473, 3c08955f-04c9-4a59-96eb-137368cf9926, 61654f23-288a-4d35-90c4-240c5dfca9e4, f7e98d3c-cde5-44e8-a830-24ee3ef838ea, d290e813-c8c0-435a-8a05-6f5f18960650 result, different first party: c1bbe007-f2fe-49c1-a6b0-5f1cbf0be473, 3c08955f-04c9-4a59-96eb-137368cf9926, 61654f23-288a-4d35-90c4-240c5dfca9e4, f7e98d3c-cde5-44e8-a830-24ee3ef838ea, d290e813-c8c0-435a-8a05-6f5f18960650 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: 05ef54b0-253a-4e09-87ac-9e4144d5665e, d1c13fe2-6638-448c-9648-af0109876a35, 3d3fc963-f162-428b-9fc1-b792d4e6387e, 78214b70-de57-4120-86f9-90c6b4f4157e, 225b8760-afaa-48a7-9c36-8c9995b23d94 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: ab51d6d6-aa87-4915-95e1-ca0cc2a653b5, 2fb9237f-833c-4be7-83bc-b62f36cb1db4, efa69fa7-bbc3-4c18-a192-154696b88c8f, 083eafc2-dd42-475d-8ac7-41ce976a5f33, 3a41099e-afbb-421e-bfe3-92dc6a4d74c7 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: c0b68757-a1d7-4be5-aa66-badf239865f3, e85cf5ab-9c51-45c3-84ac-1b84ddd4d47d, 02acfa8e-83e5-48bd-a812-05dee769f7a6, 017fb147-a703-4204-ac45-0425f8494e70, dccf0a0c-6066-4fed-b392-4390640df56a 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: 3f186427-93e7-4d81-8059-52452751aea5, 37862dbc-e093-41e7-9641-59b9f0fb4323, d161981c-6cf6-4473-97cd-27bb83a9f490, 179db3be-471b-4e1a-9a98-5b33415f6656 result, different first party: , , , unsupported: false, false, false, false passed: true, true, true, true test failed: false, false, false, false
  write: (secret) => localStorage.setItem("secret", secret) read: () => localStorage.getItem("secret") result, same first party: 3988e863-e299-4253-a3c8-3b0f4e9e50ca, f872d745-fdeb-41e2-87d5-35af5ce5f0d4, 67816c52-c1cd-4ad1-ac3b-ef8c80c1bbae, 59b1abbd-c75c-4720-9997-f434ffd62315, efa5790c-cc47-41c1-98ea-da98083c1b6a result, different first party: 3988e863-e299-4253-a3c8-3b0f4e9e50ca, f872d745-fdeb-41e2-87d5-35af5ce5f0d4, 67816c52-c1cd-4ad1-ac3b-ef8c80c1bbae, 59b1abbd-c75c-4720-9997-f434ffd62315, efa5790c-cc47-41c1-98ea-da98083c1b6a 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: 1eeaa39c-fc45-401b-9b49-8279d558ff2c, ddfb602a-31bd-431c-ae21-423e00c649e6, 46a1a6d5-ea38-4769-9e6b-ee363fb39e1c, fc027800-35cc-4265-b354-e99377121331, 723241f8-e69b-486e-aa83-ae33e0274f29 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: 72a44cd0-9935-4373-a725-705e2b10d285, 1d5f8c43-4bba-4458-8131-857c66d41a43, 78319bba-db56-4aad-8da1-16c0f38957cf, f05ef66e-6490-449f-a78d-364c6cd742bd, 54604a70-2d23-4c32-8a4e-87f8c7919646 result, different first party: 72a44cd0-9935-4373-a725-705e2b10d285, 1d5f8c43-4bba-4458-8131-857c66d41a43, 78319bba-db56-4aad-8da1-16c0f38957cf, f05ef66e-6490-449f-a78d-364c6cd742bd, 54604a70-2d23-4c32-8a4e-87f8c7919646 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: 9cea1b3b-e207-43d2-9795-9538ec6a8090, 3f736480-9a41-4d46-b833-0a48f57239a1, 008b4db4-b64b-48f4-8470-9707c690ac25, 67600378-bf10-43c1-ac1e-5bd745ce3651, 65c17a86-c49f-4b2e-a217-5320c33d8da2 result, different first party: 9cea1b3b-e207-43d2-9795-9538ec6a8090, 3f736480-9a41-4d46-b833-0a48f57239a1, 008b4db4-b64b-48f4-8470-9707c690ac25, 67600378-bf10-43c1-ac1e-5bd745ce3651, 65c17a86-c49f-4b2e-a217-5320c33d8da2 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: 10c0067e-3c96-4710-a9a4-78f1c7158393, 5b0d488a-9be5-4b2c-931d-40b1e8e79252, 31ab50a7-ee6e-427a-8a1d-fc2ef242865f, 4be77fae-05f6-4b5e-b7ca-710b2224dd00, 9ec72172-8287-402b-ab51-ebf15cc76440 result, different first party: 10c0067e-3c96-4710-a9a4-78f1c7158393, 5b0d488a-9be5-4b2c-931d-40b1e8e79252, 31ab50a7-ee6e-427a-8a1d-fc2ef242865f, 4be77fae-05f6-4b5e-b7ca-710b2224dd00, 9ec72172-8287-402b-ab51-ebf15cc76440 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: 7ee67fba-1f61-4db7-b32c-6f8455730284, aef87fb1-d870-4f1f-ae1e-72ad659287e5, 4ab9730c-6aac-4b46-bd43-8cf40979b01d, 78ffe5db-860d-4149-b578-e8bac2d612fa, f81aa39c-9ac9-4131-ba2d-6bea955ef656 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: ac5b7e49-624f-4382-a7fd-5426c57efd53, 6f8c5cd2-3bec-46f1-bff5-7752371234a1, 36516975-7613-4d7d-ad78-31e324dfc4e6, 5aaeca7b-6ce1-45e7-a472-f838d8e5cac2, a10000c3-415d-4a49-9b9d-c2b6e2d8b3be 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: f8bf602c-f399-453d-98f1-86c1c8d561c3, b7a1c758-b9d5-4d33-8dad-c99c7241d02e result, different first party: , unsupported: false, false passed: true, true test failed: false, false
  write: (secret) => localStorage.setItem("secret", secret) read: () => localStorage.getItem("secret") result, same first party: c1bbe007-f2fe-49c1-a6b0-5f1cbf0be473, 3c08955f-04c9-4a59-96eb-137368cf9926, 61654f23-288a-4d35-90c4-240c5dfca9e4, f7e98d3c-cde5-44e8-a830-24ee3ef838ea, d290e813-c8c0-435a-8a05-6f5f18960650 result, different first party: c1bbe007-f2fe-49c1-a6b0-5f1cbf0be473, 3c08955f-04c9-4a59-96eb-137368cf9926, 61654f23-288a-4d35-90c4-240c5dfca9e4, f7e98d3c-cde5-44e8-a830-24ee3ef838ea, d290e813-c8c0-435a-8a05-6f5f18960650 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: 05ef54b0-253a-4e09-87ac-9e4144d5665e, d1c13fe2-6638-448c-9648-af0109876a35, 3d3fc963-f162-428b-9fc1-b792d4e6387e, 78214b70-de57-4120-86f9-90c6b4f4157e, 225b8760-afaa-48a7-9c36-8c9995b23d94 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: ab51d6d6-aa87-4915-95e1-ca0cc2a653b5, 2fb9237f-833c-4be7-83bc-b62f36cb1db4, efa69fa7-bbc3-4c18-a192-154696b88c8f, 083eafc2-dd42-475d-8ac7-41ce976a5f33, 3a41099e-afbb-421e-bfe3-92dc6a4d74c7 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: c0b68757-a1d7-4be5-aa66-badf239865f3, e85cf5ab-9c51-45c3-84ac-1b84ddd4d47d, 02acfa8e-83e5-48bd-a812-05dee769f7a6, 017fb147-a703-4204-ac45-0425f8494e70, dccf0a0c-6066-4fed-b392-4390640df56a 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: 3f186427-93e7-4d81-8059-52452751aea5, 37862dbc-e093-41e7-9641-59b9f0fb4323, d161981c-6cf6-4473-97cd-27bb83a9f490, 179db3be-471b-4e1a-9a98-5b33415f6656 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. unsupported: false, false, false, false passed: true, true, true, true test failed: 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: 3988e863-e299-4253-a3c8-3b0f4e9e50ca, f872d745-fdeb-41e2-87d5-35af5ce5f0d4, 67816c52-c1cd-4ad1-ac3b-ef8c80c1bbae, 59b1abbd-c75c-4720-9997-f434ffd62315, efa5790c-cc47-41c1-98ea-da98083c1b6a result, different first party: 3988e863-e299-4253-a3c8-3b0f4e9e50ca, f872d745-fdeb-41e2-87d5-35af5ce5f0d4, 67816c52-c1cd-4ad1-ac3b-ef8c80c1bbae, 59b1abbd-c75c-4720-9997-f434ffd62315, efa5790c-cc47-41c1-98ea-da98083c1b6a 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: 1eeaa39c-fc45-401b-9b49-8279d558ff2c, ddfb602a-31bd-431c-ae21-423e00c649e6, 46a1a6d5-ea38-4769-9e6b-ee363fb39e1c, fc027800-35cc-4265-b354-e99377121331, 723241f8-e69b-486e-aa83-ae33e0274f29 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: 72a44cd0-9935-4373-a725-705e2b10d285, 1d5f8c43-4bba-4458-8131-857c66d41a43, 78319bba-db56-4aad-8da1-16c0f38957cf, f05ef66e-6490-449f-a78d-364c6cd742bd, 54604a70-2d23-4c32-8a4e-87f8c7919646 result, different first party: 72a44cd0-9935-4373-a725-705e2b10d285, 1d5f8c43-4bba-4458-8131-857c66d41a43, 78319bba-db56-4aad-8da1-16c0f38957cf, f05ef66e-6490-449f-a78d-364c6cd742bd, 54604a70-2d23-4c32-8a4e-87f8c7919646 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: 9cea1b3b-e207-43d2-9795-9538ec6a8090, 3f736480-9a41-4d46-b833-0a48f57239a1, 008b4db4-b64b-48f4-8470-9707c690ac25, 67600378-bf10-43c1-ac1e-5bd745ce3651, 65c17a86-c49f-4b2e-a217-5320c33d8da2 result, different first party: 9cea1b3b-e207-43d2-9795-9538ec6a8090, 3f736480-9a41-4d46-b833-0a48f57239a1, 008b4db4-b64b-48f4-8470-9707c690ac25, 67600378-bf10-43c1-ac1e-5bd745ce3651, 65c17a86-c49f-4b2e-a217-5320c33d8da2 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: 10c0067e-3c96-4710-a9a4-78f1c7158393, 5b0d488a-9be5-4b2c-931d-40b1e8e79252, 31ab50a7-ee6e-427a-8a1d-fc2ef242865f, 4be77fae-05f6-4b5e-b7ca-710b2224dd00, 9ec72172-8287-402b-ab51-ebf15cc76440 result, different first party: 10c0067e-3c96-4710-a9a4-78f1c7158393, 5b0d488a-9be5-4b2c-931d-40b1e8e79252, 31ab50a7-ee6e-427a-8a1d-fc2ef242865f, 4be77fae-05f6-4b5e-b7ca-710b2224dd00, 9ec72172-8287-402b-ab51-ebf15cc76440 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: 7ee67fba-1f61-4db7-b32c-6f8455730284, aef87fb1-d870-4f1f-ae1e-72ad659287e5, 4ab9730c-6aac-4b46-bd43-8cf40979b01d, 78ffe5db-860d-4149-b578-e8bac2d612fa, f81aa39c-9ac9-4131-ba2d-6bea955ef656 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 passed: undefined test failed: 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: c1bbe007-f2fe-49c1-a6b0-5f1cbf0be473, 3c08955f-04c9-4a59-96eb-137368cf9926, 61654f23-288a-4d35-90c4-240c5dfca9e4, f7e98d3c-cde5-44e8-a830-24ee3ef838ea, d290e813-c8c0-435a-8a05-6f5f18960650 result, different first party: c1bbe007-f2fe-49c1-a6b0-5f1cbf0be473, 3c08955f-04c9-4a59-96eb-137368cf9926, 61654f23-288a-4d35-90c4-240c5dfca9e4, f7e98d3c-cde5-44e8-a830-24ee3ef838ea, d290e813-c8c0-435a-8a05-6f5f18960650 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: 05ef54b0-253a-4e09-87ac-9e4144d5665e, d1c13fe2-6638-448c-9648-af0109876a35, 3d3fc963-f162-428b-9fc1-b792d4e6387e, 78214b70-de57-4120-86f9-90c6b4f4157e, 225b8760-afaa-48a7-9c36-8c9995b23d94 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 result, different first party: 1, 1, 1, 1 unsupported: false, false, false, false passed: false, false, false, false test failed: 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: 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: 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 result, different first party: 2, 2 unsupported: false, false passed: true, true test failed: 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, 1, 1, 2 unsupported: false, false, false, false, false passed: true, false, false, 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
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: ab51d6d6-aa87-4915-95e1-ca0cc2a653b5, 2fb9237f-833c-4be7-83bc-b62f36cb1db4, efa69fa7-bbc3-4c18-a192-154696b88c8f, 083eafc2-dd42-475d-8ac7-41ce976a5f33, 3a41099e-afbb-421e-bfe3-92dc6a4d74c7 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: c0b68757-a1d7-4be5-aa66-badf239865f3, e85cf5ab-9c51-45c3-84ac-1b84ddd4d47d, 02acfa8e-83e5-48bd-a812-05dee769f7a6, 017fb147-a703-4204-ac45-0425f8494e70, dccf0a0c-6066-4fed-b392-4390640df56a 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=${key}`); } read: async () => { let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); let response = await fetch("serviceworker-read"); return await response.text(); } result, same first party: 3f186427-93e7-4d81-8059-52452751aea5, 37862dbc-e093-41e7-9641-59b9f0fb4323, d161981c-6cf6-4473-97cd-27bb83a9f490, 179db3be-471b-4e1a-9a98-5b33415f6656 result, different first party: Error: Failed to register a ServiceWorker for scope ('https://arthuredelstein.net/test-pages/') with script ('https://arthuredelstein.net/test-pages/serviceWorker.js'): The user denied permission to use Service Worker., Error: Failed to register a ServiceWorker for scope ('https://arthuredelstein.net/test-pages/') with script ('https://arthuredelstein.net/test-pages/serviceWorker.js'): The user denied permission to use Service Worker., Error: Failed to register a ServiceWorker for scope ('https://arthuredelstein.net/test-pages/') with script ('https://arthuredelstein.net/test-pages/serviceWorker.js'): The user denied permission to use Service Worker., Error: Failed to register a ServiceWorker for scope ('https://arthuredelstein.net/test-pages/') with script ('https://arthuredelstein.net/test-pages/serviceWorker.js'): The user denied permission to use Service Worker. unsupported: false, false, false, false passed: true, true, true, true test failed: false, false, false, false
  write: async (key) => { if (!navigator.serviceWorker) { throw new Error("Unsupported"); } let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); await fetch(`serviceworker-write?secret=${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: 3988e863-e299-4253-a3c8-3b0f4e9e50ca, f872d745-fdeb-41e2-87d5-35af5ce5f0d4, 67816c52-c1cd-4ad1-ac3b-ef8c80c1bbae, 59b1abbd-c75c-4720-9997-f434ffd62315, efa5790c-cc47-41c1-98ea-da98083c1b6a result, different first party: 3988e863-e299-4253-a3c8-3b0f4e9e50ca, f872d745-fdeb-41e2-87d5-35af5ce5f0d4, 67816c52-c1cd-4ad1-ac3b-ef8c80c1bbae, 59b1abbd-c75c-4720-9997-f434ffd62315, efa5790c-cc47-41c1-98ea-da98083c1b6a 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: 1eeaa39c-fc45-401b-9b49-8279d558ff2c, ddfb602a-31bd-431c-ae21-423e00c649e6, 46a1a6d5-ea38-4769-9e6b-ee363fb39e1c, fc027800-35cc-4265-b354-e99377121331, 723241f8-e69b-486e-aa83-ae33e0274f29 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: 72a44cd0-9935-4373-a725-705e2b10d285, 1d5f8c43-4bba-4458-8131-857c66d41a43, 78319bba-db56-4aad-8da1-16c0f38957cf, f05ef66e-6490-449f-a78d-364c6cd742bd, 54604a70-2d23-4c32-8a4e-87f8c7919646 result, different first party: 72a44cd0-9935-4373-a725-705e2b10d285, 1d5f8c43-4bba-4458-8131-857c66d41a43, 78319bba-db56-4aad-8da1-16c0f38957cf, f05ef66e-6490-449f-a78d-364c6cd742bd, 54604a70-2d23-4c32-8a4e-87f8c7919646 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=${key}`); } read: async () => { let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); let response = await fetch("serviceworker-read"); return await response.text(); } result, same first party: 9cea1b3b-e207-43d2-9795-9538ec6a8090, 3f736480-9a41-4d46-b833-0a48f57239a1, 008b4db4-b64b-48f4-8470-9707c690ac25, 67600378-bf10-43c1-ac1e-5bd745ce3651, 65c17a86-c49f-4b2e-a217-5320c33d8da2 result, different first party: 9cea1b3b-e207-43d2-9795-9538ec6a8090, 3f736480-9a41-4d46-b833-0a48f57239a1, 008b4db4-b64b-48f4-8470-9707c690ac25, 67600378-bf10-43c1-ac1e-5bd745ce3651, 65c17a86-c49f-4b2e-a217-5320c33d8da2 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { if (!navigator.serviceWorker) { throw new Error("Unsupported"); } let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); await fetch(`serviceworker-write?secret=${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: 10c0067e-3c96-4710-a9a4-78f1c7158393, 5b0d488a-9be5-4b2c-931d-40b1e8e79252, 31ab50a7-ee6e-427a-8a1d-fc2ef242865f, 4be77fae-05f6-4b5e-b7ca-710b2224dd00, 9ec72172-8287-402b-ab51-ebf15cc76440 result, different first party: 10c0067e-3c96-4710-a9a4-78f1c7158393, 5b0d488a-9be5-4b2c-931d-40b1e8e79252, 31ab50a7-ee6e-427a-8a1d-fc2ef242865f, 4be77fae-05f6-4b5e-b7ca-710b2224dd00, 9ec72172-8287-402b-ab51-ebf15cc76440 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: 7ee67fba-1f61-4db7-b32c-6f8455730284, aef87fb1-d870-4f1f-ae1e-72ad659287e5, 4ab9730c-6aac-4b46-bd43-8cf40979b01d, 78ffe5db-860d-4149-b578-e8bac2d612fa, f81aa39c-9ac9-4131-ba2d-6bea955ef656 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: ac5b7e49-624f-4382-a7fd-5426c57efd53, 6f8c5cd2-3bec-46f1-bff5-7752371234a1, 36516975-7613-4d7d-ad78-31e324dfc4e6, 5aaeca7b-6ce1-45e7-a472-f838d8e5cac2, a10000c3-415d-4a49-9b9d-c2b6e2d8b3be 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=${key}`); } read: async () => { let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); let response = await fetch("serviceworker-read"); return await response.text(); } result, same first party: b6f550f1-fad6-48b2-880a-249f625edc4d, 2be2e982-8357-48a4-9b81-5f6f243e29ca, 863dd39e-b267-4f1e-882e-eb692c3e0d9e, 25aa5d7f-4d04-4df9-9713-044512569162, 7696c59c-b1a3-46c6-ad91-b171bc7aa1e7 result, different first party: , , , , unsupported: false, false, false, false, false passed: true, true, true, true, true test failed: false, false, false, false, false
write: async (key) => { if (!navigator.serviceWorker) { throw new Error("Unsupported"); } let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); await fetch(`serviceworker-write?secret=${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 result, different first party: Error: navigator.serviceWorker is undefined, Error: navigator.serviceWorker is undefined unsupported: true, true passed: undefined test failed: 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=${key}`); } read: async () => { let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); let response = await fetch("serviceworker-read"); return await response.text(); } result, same first party: c1bbe007-f2fe-49c1-a6b0-5f1cbf0be473, 3c08955f-04c9-4a59-96eb-137368cf9926, 61654f23-288a-4d35-90c4-240c5dfca9e4, f7e98d3c-cde5-44e8-a830-24ee3ef838ea, d290e813-c8c0-435a-8a05-6f5f18960650 result, different first party: c1bbe007-f2fe-49c1-a6b0-5f1cbf0be473, 3c08955f-04c9-4a59-96eb-137368cf9926, 61654f23-288a-4d35-90c4-240c5dfca9e4, f7e98d3c-cde5-44e8-a830-24ee3ef838ea, d290e813-c8c0-435a-8a05-6f5f18960650 unsupported: false, false, false, false, false passed: false, false, false, false, false test failed: false, false, false, false, false
  write: async (key) => { if (!navigator.serviceWorker) { throw new Error("Unsupported"); } let registration = await navigator.serviceWorker.register( 'serviceWorker.js'); console.log(registration); await navigator.serviceWorker.ready; console.log("service worker ready"); await sleepMs(100); await fetch(`serviceworker-write?secret=${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: 05ef54b0-253a-4e09-87ac-9e4144d5665e, d1c13fe2-6638-448c-9648-af0109876a35, 3d3fc963-f162-428b-9fc1-b792d4e6387e, 78214b70-de57-4120-86f9-90c6b4f4157e, 225b8760-afaa-48a7-9c36-8c9995b23d94 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: ab51d6d6-aa87-4915-95e1-ca0cc2a653b5, 2fb9237f-833c-4be7-83bc-b62f36cb1db4, efa69fa7-bbc3-4c18-a192-154696b88c8f, 083eafc2-dd42-475d-8ac7-41ce976a5f33, 3a41099e-afbb-421e-bfe3-92dc6a4d74c7 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: c0b68757-a1d7-4be5-aa66-badf239865f3, e85cf5ab-9c51-45c3-84ac-1b84ddd4d47d, 02acfa8e-83e5-48bd-a812-05dee769f7a6, 017fb147-a703-4204-ac45-0425f8494e70, dccf0a0c-6066-4fed-b392-4390640df56a 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: 3f186427-93e7-4d81-8059-52452751aea5, 37862dbc-e093-41e7-9641-59b9f0fb4323, d161981c-6cf6-4473-97cd-27bb83a9f490, 179db3be-471b-4e1a-9a98-5b33415f6656 result, different first party: Error: undefined, Error: undefined, Error: undefined, Error: undefined unsupported: false, false, false, false passed: true, true, true, true test failed: 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: 3988e863-e299-4253-a3c8-3b0f4e9e50ca, f872d745-fdeb-41e2-87d5-35af5ce5f0d4, 67816c52-c1cd-4ad1-ac3b-ef8c80c1bbae, 59b1abbd-c75c-4720-9997-f434ffd62315, efa5790c-cc47-41c1-98ea-da98083c1b6a result, different first party: 3988e863-e299-4253-a3c8-3b0f4e9e50ca, f872d745-fdeb-41e2-87d5-35af5ce5f0d4, 67816c52-c1cd-4ad1-ac3b-ef8c80c1bbae, 59b1abbd-c75c-4720-9997-f434ffd62315, efa5790c-cc47-41c1-98ea-da98083c1b6a 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: 1eeaa39c-fc45-401b-9b49-8279d558ff2c, ddfb602a-31bd-431c-ae21-423e00c649e6, 46a1a6d5-ea38-4769-9e6b-ee363fb39e1c, fc027800-35cc-4265-b354-e99377121331, 723241f8-e69b-486e-aa83-ae33e0274f29 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: 72a44cd0-9935-4373-a725-705e2b10d285, 1d5f8c43-4bba-4458-8131-857c66d41a43, 78319bba-db56-4aad-8da1-16c0f38957cf, f05ef66e-6490-449f-a78d-364c6cd742bd, 54604a70-2d23-4c32-8a4e-87f8c7919646 result, different first party: 72a44cd0-9935-4373-a725-705e2b10d285, 1d5f8c43-4bba-4458-8131-857c66d41a43, 78319bba-db56-4aad-8da1-16c0f38957cf, f05ef66e-6490-449f-a78d-364c6cd742bd, 54604a70-2d23-4c32-8a4e-87f8c7919646 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: 9cea1b3b-e207-43d2-9795-9538ec6a8090, 3f736480-9a41-4d46-b833-0a48f57239a1, 008b4db4-b64b-48f4-8470-9707c690ac25, 67600378-bf10-43c1-ac1e-5bd745ce3651, 65c17a86-c49f-4b2e-a217-5320c33d8da2 result, different first party: 9cea1b3b-e207-43d2-9795-9538ec6a8090, 3f736480-9a41-4d46-b833-0a48f57239a1, 008b4db4-b64b-48f4-8470-9707c690ac25, 67600378-bf10-43c1-ac1e-5bd745ce3651, 65c17a86-c49f-4b2e-a217-5320c33d8da2 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: 10c0067e-3c96-4710-a9a4-78f1c7158393, 5b0d488a-9be5-4b2c-931d-40b1e8e79252, 31ab50a7-ee6e-427a-8a1d-fc2ef242865f, 4be77fae-05f6-4b5e-b7ca-710b2224dd00, 9ec72172-8287-402b-ab51-ebf15cc76440 result, different first party: 10c0067e-3c96-4710-a9a4-78f1c7158393, 5b0d488a-9be5-4b2c-931d-40b1e8e79252, 31ab50a7-ee6e-427a-8a1d-fc2ef242865f, 4be77fae-05f6-4b5e-b7ca-710b2224dd00, 9ec72172-8287-402b-ab51-ebf15cc76440 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: 7ee67fba-1f61-4db7-b32c-6f8455730284, aef87fb1-d870-4f1f-ae1e-72ad659287e5, 4ab9730c-6aac-4b46-bd43-8cf40979b01d, 78ffe5db-860d-4149-b578-e8bac2d612fa, f81aa39c-9ac9-4131-ba2d-6bea955ef656 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: f8bf602c-f399-453d-98f1-86c1c8d561c3, b7a1c758-b9d5-4d33-8dad-c99c7241d02e result, different first party: Error: undefined, Error: undefined unsupported: false, false passed: true, true test failed: 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: c1bbe007-f2fe-49c1-a6b0-5f1cbf0be473, 3c08955f-04c9-4a59-96eb-137368cf9926, 61654f23-288a-4d35-90c4-240c5dfca9e4, f7e98d3c-cde5-44e8-a830-24ee3ef838ea, d290e813-c8c0-435a-8a05-6f5f18960650 result, different first party: c1bbe007-f2fe-49c1-a6b0-5f1cbf0be473, 3c08955f-04c9-4a59-96eb-137368cf9926, 61654f23-288a-4d35-90c4-240c5dfca9e4, f7e98d3c-cde5-44e8-a830-24ee3ef838ea, d290e813-c8c0-435a-8a05-6f5f18960650 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: 05ef54b0-253a-4e09-87ac-9e4144d5665e, d1c13fe2-6638-448c-9648-af0109876a35, 3d3fc963-f162-428b-9fc1-b792d4e6387e, 78214b70-de57-4120-86f9-90c6b4f4157e, 225b8760-afaa-48a7-9c36-8c9995b23d94 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: ea46344bb3851e15bb1d9ff7d4706624b72d353af5260eb86251e97ff42941c2, 82d25ae83785eca139ab90bb57915c63cf72d359c58fcdb737881fa1b6816bb3, 30a6b632948cd9c28217dcc3708fb1b7496b4c90e827297ed415ca2d8bc0c6f5, 3e8c48e3291dae7d9d667be6d7edade00942958be9db0aafe84357c865236ae3, 2360d814194840e5c9d799720f9f78a6f5eef4f70d0df01322c008399c303b80 result, different first party: 0430783b45071e19939717d4c68914af8db35e859fb634e1cea1af13f3aec5a2, 043082714e45c4c94e92484322bc3326113b838319f46d3a21604817a71abc2c, 043020534e2b9aab476271dcd51c976f4641fb3571a43ac2d5603c2daa7017d6, 04305157a134dd9d9b7b11c2cf2d5a3f52451fc4044cbe95a1ae08e7eab3a9d0, 0430d2c2bd16ad5eeb12fe69815e7cf64f109d43dfc272bd59155e05485b52ba 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: 73d0971d010631782797557a180a64a8b936141749e8d9c0c9b1dc939137241b, f41da3c8dd786c4eb9860b56ef52ccd3320bdc398e0907508f243f239c9e916a, 7f114564731a44db867d33377e8be92c460245c8d0c66ac1508ca3d434d949cf, 14146af27fc965edd0f6431762c0f4c229b7d2613cdebbdad4c3ce37a3dfa99d, f2851c7f42193fc0eb7fdbe69541cb7fda52f415de9d2e9fb9c448f88de329f4 result, different first party: 0430450310320457309b1b86dc070429b34a3f9bc2751de2b868999010076bd0, 0430d042d2c28fcce5da12719e71f19e10644807c2a6ae3e205031ba4dd50ee9, 0430933b7611951a7a00f8eafdbad2bbb29b7194d4ac93aedaa83d9dd26ab397, 0430e5788cd98f75300f3838be2d6520c544019925a83b4b9c440422e481e796, 04308e5c51aebc22851f3d5a7af2192be1e95d43bbacda9c24b8185598f5d77b 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: 7c2f0444eecc0e2a132d5c1deda02f93bf1bad3e5a1c711c580f189418f68897, 7a5d413ae2e54e3105783a20ef9d90c81589043938caadbcd6544a5b1ef5008b, 5a3a0a7e385ea94e677ca2269ddc97c12953e6e2715fd281638f53ebe78f99f8, 46ea83feba82e780ae59f7d6dff1f2840f1725fb39f3b8dde89c98dda169b2ca result, different first party: 0430a90396695ce6c302855bc32ffd7f09a82094b410f847ec0113a20f03ce7c, 04307aca0fbd3b290c8eb0cf02b668c4c7f0caff174b94e55cfde52b34d007d9, 043006725ec9667ceaec04c66746ccdf000641246c0c2d398ce881037ac57a93, 04302ba49d24507ace499af1654249d0c6422809292ce5e92ed1e6f646143be4 unsupported: false, false, false, false passed: true, true, true, true test failed: 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: 52539b75537aef00bc5f2daeb69d81e1b8173f265af44ee994796e6c406991ab, 6b6cbc51d74545a21e6a93859f3947354ec490ecf013f1571f9ff84b3cdc95c1, cd6ec4e2def7fc156d564c39420268121300741980afd563559ae03d7e2ad271, 21dac38c2c6afeadf4ac2e8e0b2650b26fc49c68ecc60a1d05268046b7d1c98a, b71e79ba4ff30397030f2404e5f32ca0a438dde00d596cc2914708a916dee0dd result, different first party: 0430aacfd3fb89c8c516feee5992379741af357ea2a8c44394da90a243cdc482, 0430f79c18db01db627590c917541689ffec634a44cf88938d746c2f950159d4, 0430bbb3f85f3217de2dbf93b016494d5140d55450d9b6f4f8dadd8b1125a418, 0430058b2aba6ca37ef7092fc2f9f2e2416e27ba0eb1d1c8b4a96dcbdff63792, 04305db691a6c8845e4cf1a6982552dc816d8bf257c9cfd2edcf57a99f75b975 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: 410e9e7c6e8e9751351264e489816fcf3b5d025ab547d71a3a65fbd1c5195603, 160a82599ed32782b22827b4978128352838464a07f770fe7572f22c6af65cf3, fed8d4220fc882d5776f141b3ae370115eeb7f3eb425b93cfbbea2f453e20342, 914bd3d2b2ca274e51ac52ce307a867d9d0a65431f8015267d26d07b38a8c217, 3bdd78a3a0e1171ff26c6fd616816fe8e497d2f67dee348fb62115a818632f6a result, different first party: 04301f57dc18a65192bf408b46811a76be576f732783bbb1bdfa71361dabcfd2, 04301fdbb1b97d71c9285ffb6fc52c0324dbc0511f2c4ab015f58c58dcac6888, 04303b2f15190fbb82cea23db344ebe29bbe121c4f208d2e19c7abb01dd8616d, 043036517ededa4d451a7da4f6f61b37e20159e25e3e1219711838d8835539a7, 0430035e160950b19a9929edd2d2c982a0f714f1d12f4ea099dc88d59da01ebf 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: 33b0524337565383e890646b4a96fdc2f95aeb39326761ffb373ec5c6a8ff23c, b766b01aa66bede14a557af626ece869844be39045246d36b7f6f6491124d6d5, 2688aff5705c463fe7c83712541d9a992f727dc9e2dbc8a8467fe08251aeb399, 3a2b41dfcd48ac70ccdcee64f601115e9bdf95b5379757a7fdcf228aaa6dbb67, ab2ea32b86b561f32a54411d8ef8792b54f205ec5d8ce58db8fb6a3e81952d37 result, different first party: 7ccc8202fc80c5491a6be4aba2666519491977130df726f0c36640c17b59fa71, c2567603a3a51b581117701d6ce3ea2143faed0bd27623f1a1ad7bc207b790fc, 4d58a2859e0d6663c1e3d64056199f0e0df0b42195bc6a1f99e7c4363d04de5e, 2295ef1d2cb8884abbba4a3f80a85072e84d742d49c38dbb6a6b7389f4572340, 53c3fc10f305f4fad9c2705f69f7924b551eee0519d2cc85a3f4ea657b513d0e 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: 536f1df4080ee615f06cb826d1158360f7ec60d5490ed1ca9ce3fb99aa1b89db, a2a68986733205c8b60f0e1aa128b4e5f9bbc9b6d53dfdd45e0b225e92b4bed6, 7ca8519080b6ce3d9e602202353b77bec2ba5ffde17e9f88dbebbc13ae35aa1d, 581b43c967018da1f10a75c7c80dbe2559d552b0e1946b49b2a6849c61f2b8a4, 4e892077e9ec1e621f8953fec527e83b70550461a413eab32610c84da51e0c8a result, different first party: be5c753b0ee3924ebdf8334b88c98d6f4d0759408abf1e4832759beccffd5b57, 8eb32fcbf464cdda6792161404cdbedf6b6f6a74a3d5ba07fc314f5236913be9, e2ea93dc5fed63fa2ad5e9097b9aab552f1b076ef0e589e6d4ce4c61b0d13c8b, 6eea5a7f1a813fbda9526e4404fa1a06c16adc54cd03d2595f156440c6913179, 0fc824421b4e3c3ceda6959ec3e72c503f855619998e19f7212513651a5cfab9 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: 46eb6505698505a7e3f799ce695f396ccf42719af9aa5d2b7a5b00294f8b9b8c, 1a2f3b126a964f9ed6c82e67047da695771e9c9f5496c846664fd7bb7245112c, d708a97532f9ce7014c00f0d19776d364eeaf92f764c31c03737b0b42803957b, dc754870b9ff19dae2737776827f53396168f603268a7f618974fff934d66d80, fa543f638fda50648f0698f44818289628e84ffc911f1e1fe087a020f3b0194f result, different first party: 80830aed0c71e3ad6322207ca86e643bc3423005bdd492305063dedd4acd23c1, d23ea10425e5e5baed19e3086ac48f9061621de940584d0e905fcc2ce64ff2ea, 8595615f54c5be6cb85e30875a0e6167a731f1fdc5eed4fcfdb9c204592add62, 2ba1198d68331b41fabd51fa78240268864a8499c99cddcc6f8825caef1586ce, fd6ddc01f7e263cfbf1cec0b6c7d85fbc6cd23bb0d6a9bf5b0118a2d8b20bc37 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: 0b8818c3c7599ba928b099ba52adab9f49c622aab243088a970d9adaeba1ecb7, 9cce8fad95ae13a664f9d7d62f5ad52c1094af238742ed888800fc9f324ec147, 8dd8d0fbb2514740d7884609113e1d1623e1187c9699ff81edae7fd0b0c11d2a, 936a71f494ac545c755488c13e41dc5792fe8198bc2bfdbe399cb6d58dabf687, 353ba16a0fadd9b70cb3d9bafe873777575d74353895047b427acd2ef27ebd8b result, different first party: 668d9b680d22643735c3c5615e1570f161ef55220ac800265112463898fb01cc, 63328950ba21d840c4788e545f6c2381ed46e5626d8fa6fdcf14a23e3d142166, d5427c9d5adf6b53e218d2faa627a57c9ee81810fcdc4f618467df83f3e20f60, a71092331081725423a55a4df2b8179a50ceb3c114fd82a62a9f02793d91a977, 85f490a05fb22e20db849d5c6fb7b21c2828e375c43f91dba4cdabb1559ec0f9 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: c9523f8cd955824c9d5f0034e30dcd8b2c439663fe80828093b10e56987dc581, 6a6d83ce4018eef04adf509012a2a4bdb4c39f70fc1b0578c2e313a6aec44e2b, 01be3f8eb251bd07c627210988d8f0b7decfa4bc654532b7ff32c44dc91c657f, dc3c82903ed89665eb81dd214ad94a593109291f1c56b86fe62ee1246d55531c, 3d3ccf5232c58d03c193041930bf28ec66c20325f4a98acd36f191fd703d6a85 result, different first party: 77d5cf5e51e7d5f341684aaa8ccc381a4c9a2a13e18628d5c1c11658441fc0ac, e07a7d21dcdaf6589a83044bc6d5db7362b7a006713c2e42e83c3a7ac6e67abd, f29a431d919f34b8264848eda9b26e18ef8b8a129b40875a6400e0e91028dffa, 094c1be7eebcd87e80fc32a35636d3ba111879e664b078c4c1b5aebe029f031a, 46b14ffbf5bf704c629ce559663069a06c6ff61a3a4bb93c8e806b9fc9f57029 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: b30061fb90a0bcd0d8b5cc293f74ffe5e0b8ef1da336b8c340d589c21130ca25, 3e5b88e1de501c4a99b66166a94b3d55f2a0650675f9325fc3d3557d42d71b76, b2fb4849528318df6b4dafebd46634eebe35c581f36f8578d547e4c891e5080a, 7ff12710be583a314514d879131f83fff98483cd475315f8e4d4a25946050207, c40e57ca0f797e53f91ffb6f350e176200d7ec82882a6fc862d19d17b17fb104 result, different first party: eed32c96791d5cb35ce9979c8045fa34288771b4e0f7991e2a26d0f41f775058, 6bc9c791ce158517b1b29d4f486c2d423c185314871723274ca63e0b1426a8ba, 767ceb598d388b472496d7607b6b9189cbeadd97d5c08472e6cf568fdf4b3632, b3e2b799ce45b00160bab72837b9f84bb26594a304ed1a093f2efedd60320c4a, da3ea1087b62e1ba0b4cfd47de641df1067290092931ae3749611270c1d72ccd 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: b261172ac12f57b4c475b541febbe17d245203c0c1ddf371c95bfcf09d1e589d, 3d5a63ad7512ef8192e30f409705ed0a553f0389f940009967fe0afce2a24c92 result, different first party: 6cd493e75fdcfe8141d354ee39c4ed50d57d04c2cfa3ab41c08d288fd5df0edf, 192aa9304d5bdf532c3f1792f22852df56e81918179ce47f2e8d3fb382bc50cf unsupported: false, false passed: true, true test failed: 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: 4ae65ef0a7151bdb1a33c3df341e106aab072ef863a207547738ccc43d1dfe16, 8d074221bd211f5d1d255fed63f0b86c795db8428e31b89acce145be0fa9e2f1, 6fa69e93c0656bb5e04cfaa6c2365a9b93bce5a39ea273b0981b3ab2105abf2d, 68020b99d1067654fbedbe2e6c3152cc0131d5f01b72673ccef07ad7928fdb76, a3791d5d17fcc4342646aa3255cc05dab5f5bf312a28b94a016e7e1ff645f69e result, different first party: ed28f03535295969b1df620f9af653a43119eda01537a357036cbca49fa563f0, d8f6c8b72175af444f4398f39bfdd5ab088564b0d8eeb738ac30d6934173aa64, a43dde3981569850dd9ad372ee301564c74aedb4ca6857c677e8f7abe1cb6107, d8af6a96914ec056fef2e7d107b6101992496245ae751870bbea9227b086b829, 975f3c735eafa913d1e4a9be8cceed78bcf45b9dee590188461d62287d2d158e 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: 80c9a47f3c0e018b30369b7dc5b74d9972f20994517d042e569aa80a6fc97778, 18aa6bf92734893219ae32f453611ffc7770d1617c76b67b88e8f5937f8e5e7c, bfab1919f5d76ae63cd0c1af5d554742e3a93042fe54627a85f7ef80e6633832, 8c9dac889d4f9b9ccb62aeb27abc6cda45fad5813707325e5e4160b0995c2e6e, 3b459ac87b5c29235be8c1373658d71ce7767062aab3f0dc4cea609135ae9687 result, different first party: b5ff699a88cb3ea3ee8c95ee01963f75c007923e9ce534431df52e6bcdafa468, 465dcb271e5f3c2c937b653f66a6b4c81fde28523550e94d4199c31885028a71, 7786a555e2632e82f57245a769de29d56a7fdd1e723b9cef1fc1801211b5706f, eaa3b72ba71e240ca42a7f0422551a953a3e526bad029b60c3e818bf1b78ebbf, 492654d7db7ba510dab70da4049f583cb360cc1c5d28af114f627e833a8e55e9 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: ab51d6d6-aa87-4915-95e1-ca0cc2a653b5, 2fb9237f-833c-4be7-83bc-b62f36cb1db4, efa69fa7-bbc3-4c18-a192-154696b88c8f, 083eafc2-dd42-475d-8ac7-41ce976a5f33, 3a41099e-afbb-421e-bfe3-92dc6a4d74c7 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: c0b68757-a1d7-4be5-aa66-badf239865f3, e85cf5ab-9c51-45c3-84ac-1b84ddd4d47d, 02acfa8e-83e5-48bd-a812-05dee769f7a6, 017fb147-a703-4204-ac45-0425f8494e70, dccf0a0c-6066-4fed-b392-4390640df56a 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: 3f186427-93e7-4d81-8059-52452751aea5, 37862dbc-e093-41e7-9641-59b9f0fb4323, d161981c-6cf6-4473-97cd-27bb83a9f490, 179db3be-471b-4e1a-9a98-5b33415f6656 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. unsupported: false, false, false, false passed: true, true, true, true test failed: 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: 3988e863-e299-4253-a3c8-3b0f4e9e50ca, f872d745-fdeb-41e2-87d5-35af5ce5f0d4, 67816c52-c1cd-4ad1-ac3b-ef8c80c1bbae, 59b1abbd-c75c-4720-9997-f434ffd62315, efa5790c-cc47-41c1-98ea-da98083c1b6a 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: 1eeaa39c-fc45-401b-9b49-8279d558ff2c, ddfb602a-31bd-431c-ae21-423e00c649e6, 46a1a6d5-ea38-4769-9e6b-ee363fb39e1c, fc027800-35cc-4265-b354-e99377121331, 723241f8-e69b-486e-aa83-ae33e0274f29 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: 72a44cd0-9935-4373-a725-705e2b10d285, 1d5f8c43-4bba-4458-8131-857c66d41a43, 78319bba-db56-4aad-8da1-16c0f38957cf, f05ef66e-6490-449f-a78d-364c6cd742bd, 54604a70-2d23-4c32-8a4e-87f8c7919646 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: 9cea1b3b-e207-43d2-9795-9538ec6a8090, 3f736480-9a41-4d46-b833-0a48f57239a1, 008b4db4-b64b-48f4-8470-9707c690ac25, 67600378-bf10-43c1-ac1e-5bd745ce3651, 65c17a86-c49f-4b2e-a217-5320c33d8da2 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: 10c0067e-3c96-4710-a9a4-78f1c7158393, 5b0d488a-9be5-4b2c-931d-40b1e8e79252, 31ab50a7-ee6e-427a-8a1d-fc2ef242865f, 4be77fae-05f6-4b5e-b7ca-710b2224dd00, 9ec72172-8287-402b-ab51-ebf15cc76440 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: 7ee67fba-1f61-4db7-b32c-6f8455730284, aef87fb1-d870-4f1f-ae1e-72ad659287e5, 4ab9730c-6aac-4b46-bd43-8cf40979b01d, 78ffe5db-860d-4149-b578-e8bac2d612fa, f81aa39c-9ac9-4131-ba2d-6bea955ef656 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: 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 result, different first party: Error: window.openDatabase is not a function, Error: window.openDatabase is not a function unsupported: true, true passed: undefined test failed: 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: c1bbe007-f2fe-49c1-a6b0-5f1cbf0be473, 3c08955f-04c9-4a59-96eb-137368cf9926, 61654f23-288a-4d35-90c4-240c5dfca9e4, f7e98d3c-cde5-44e8-a830-24ee3ef838ea, d290e813-c8c0-435a-8a05-6f5f18960650 result, different first party: c1bbe007-f2fe-49c1-a6b0-5f1cbf0be473, 3c08955f-04c9-4a59-96eb-137368cf9926, 61654f23-288a-4d35-90c4-240c5dfca9e4, f7e98d3c-cde5-44e8-a830-24ee3ef838ea, d290e813-c8c0-435a-8a05-6f5f18960650 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: 05ef54b0-253a-4e09-87ac-9e4144d5665e, d1c13fe2-6638-448c-9648-af0109876a35, 3d3fc963-f162-428b-9fc1-b792d4e6387e, 78214b70-de57-4120-86f9-90c6b4f4157e, 225b8760-afaa-48a7-9c36-8c9995b23d94 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, 09 Dec 2021 06:51:42 GMT, Thu, 09 Dec 2021 06:52:12 GMT, Thu, 09 Dec 2021 06:52:39 GMT, Thu, 09 Dec 2021 06:53:07 GMT, Thu, 09 Dec 2021 06:53:34 GMT result, different first party: Thu, 09 Dec 2021 06:51:53 GMT, Thu, 09 Dec 2021 06:51:53 GMT, Thu, 09 Dec 2021 06:51:53 GMT, Thu, 09 Dec 2021 06:51:53 GMT, Thu, 09 Dec 2021 06:51:53 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, 09 Dec 2021 06:54:03 GMT, Thu, 09 Dec 2021 06:54:33 GMT, Thu, 09 Dec 2021 06:55:03 GMT, Thu, 09 Dec 2021 06:55:32 GMT, Thu, 09 Dec 2021 06:56:02 GMT result, different first party: Thu, 09 Dec 2021 06:54:13 GMT, Thu, 09 Dec 2021 06:54:43 GMT, Thu, 09 Dec 2021 06:55:13 GMT, Thu, 09 Dec 2021 06:55:42 GMT, Thu, 09 Dec 2021 06:56:12 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, 09 Dec 2021 06:56:46 GMT, Thu, 09 Dec 2021 06:59:32 GMT, Thu, 09 Dec 2021 07:10:21 GMT, Thu, 09 Dec 2021 07:13:33 GMT result, different first party: Thu, 09 Dec 2021 06:57:36 GMT, Thu, 09 Dec 2021 07:01:35 GMT, Thu, 09 Dec 2021 07:11:09 GMT, Thu, 09 Dec 2021 07:14:20 GMT unsupported: false, false, false, false passed: true, true, true, true test failed: 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, 09 Dec 2021 07:15:21 GMT, Thu, 09 Dec 2021 07:15:47 GMT, Thu, 09 Dec 2021 07:16:12 GMT, Thu, 09 Dec 2021 07:16:38 GMT, Thu, 09 Dec 2021 07:17:03 GMT result, different first party: Thu, 02 Dec 2021 20:46:07 GMT, Thu, 02 Dec 2021 20:46:07 GMT, Thu, 02 Dec 2021 20:46:07 GMT, Thu, 02 Dec 2021 20:46:07 GMT, Thu, 02 Dec 2021 20:46:07 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, 09 Dec 2021 07:17:28 GMT, Thu, 09 Dec 2021 07:17:56 GMT, Thu, 09 Dec 2021 07:18:23 GMT, Thu, 09 Dec 2021 07:18:49 GMT, Thu, 09 Dec 2021 07:19:16 GMT result, different first party: Thu, 09 Dec 2021 07:17:36 GMT, Thu, 09 Dec 2021 07:18:03 GMT, Thu, 09 Dec 2021 07:18:30 GMT, Thu, 09 Dec 2021 07:18:56 GMT, Thu, 09 Dec 2021 07:19:23 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, 09 Dec 2021 07:19:43 GMT, Thu, 09 Dec 2021 07:20:08 GMT, Thu, 09 Dec 2021 07:20:32 GMT, Thu, 09 Dec 2021 07:20:55 GMT, Thu, 09 Dec 2021 07:21:19 GMT result, different first party: Thu, 02 Dec 2021 20:50:31 GMT, Thu, 02 Dec 2021 20:50:31 GMT, Thu, 02 Dec 2021 20:50:31 GMT, Thu, 02 Dec 2021 20:50:31 GMT, Thu, 02 Dec 2021 20:50:31 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, 09 Dec 2021 07:21:44 GMT, Thu, 09 Dec 2021 07:22:09 GMT, Thu, 09 Dec 2021 07:22:34 GMT, Thu, 09 Dec 2021 07:22:59 GMT, Thu, 09 Dec 2021 07:23:24 GMT result, different first party: Thu, 09 Dec 2021 07:21:50 GMT, Thu, 09 Dec 2021 07:22:15 GMT, Thu, 09 Dec 2021 07:22:41 GMT, Thu, 09 Dec 2021 07:23:05 GMT, Thu, 09 Dec 2021 07:23:31 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, 09 Dec 2021 07:23:50 GMT, Thu, 09 Dec 2021 07:24:14 GMT, Thu, 09 Dec 2021 07:24:38 GMT, Thu, 09 Dec 2021 07:25:01 GMT, Thu, 09 Dec 2021 07:25:25 GMT result, different first party: Thu, 02 Dec 2021 20:56:06 GMT, Thu, 02 Dec 2021 20:56:06 GMT, Thu, 02 Dec 2021 20:56:06 GMT, Thu, 02 Dec 2021 20:56:06 GMT, Thu, 02 Dec 2021 20:56:06 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, 09 Dec 2021 07:25:49 GMT, Thu, 09 Dec 2021 07:26:15 GMT, Thu, 09 Dec 2021 07:26:41 GMT, Thu, 09 Dec 2021 07:27:06 GMT, Thu, 09 Dec 2021 07:27:32 GMT result, different first party: Thu, 09 Dec 2021 07:25:55 GMT, Thu, 09 Dec 2021 07:26:21 GMT, Thu, 09 Dec 2021 07:26:47 GMT, Thu, 09 Dec 2021 07:27:13 GMT, Thu, 09 Dec 2021 07:27:39 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, 09 Dec 2021 06:23:45 GMT, Thu, 09 Dec 2021 06:24:19 GMT, Thu, 09 Dec 2021 06:24:52 GMT, Thu, 09 Dec 2021 06:25:25 GMT, Thu, 09 Dec 2021 06:25:59 GMT result, different first party: Thu, 02 Dec 2021 19:15:41 GMT, Thu, 02 Dec 2021 19:15:41 GMT, Thu, 02 Dec 2021 19:15:41 GMT, Thu, 02 Dec 2021 19:15:41 GMT, Thu, 02 Dec 2021 19:15:41 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, 09 Dec 2021 06:26:45 GMT, Thu, 09 Dec 2021 06:27:29 GMT, Thu, 09 Dec 2021 06:28:13 GMT, Thu, 09 Dec 2021 06:28:56 GMT, Thu, 09 Dec 2021 06:29:40 GMT result, different first party: Thu, 09 Dec 2021 06:26:51 GMT, Thu, 09 Dec 2021 06:27:35 GMT, Thu, 09 Dec 2021 06:28:19 GMT, Thu, 09 Dec 2021 06:29:03 GMT, Thu, 09 Dec 2021 06:29:47 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, 09 Dec 2021 06:41:39 GMT, Thu, 09 Dec 2021 06:49:41 GMT result, different first party: Thu, 09 Dec 2021 06:42:29 GMT, Thu, 09 Dec 2021 06:50:36 GMT unsupported: false, false passed: true, true test failed: 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, 09 Dec 2021 07:28:18 GMT, Thu, 09 Dec 2021 07:29:03 GMT, Thu, 09 Dec 2021 07:29:47 GMT, Thu, 09 Dec 2021 07:30:30 GMT, Thu, 09 Dec 2021 07:31:15 GMT result, different first party: Fri, 03 Dec 2021 00:08:41 GMT, Fri, 03 Dec 2021 00:08:41 GMT, Fri, 03 Dec 2021 00:08:41 GMT, Fri, 03 Dec 2021 00:08:41 GMT, Fri, 03 Dec 2021 00:08:41 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, 09 Dec 2021 07:32:00 GMT, Thu, 09 Dec 2021 07:32:45 GMT, Thu, 09 Dec 2021 07:33:31 GMT, Thu, 09 Dec 2021 07:34:17 GMT, Thu, 09 Dec 2021 07:35:04 GMT result, different first party: Thu, 09 Dec 2021 07:32:06 GMT, Thu, 09 Dec 2021 07:32:52 GMT, Thu, 09 Dec 2021 07:33:37 GMT, Thu, 09 Dec 2021 07:34:23 GMT, Thu, 09 Dec 2021 07:35:10 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/ result, different first party: https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/, https://arthuredelstein.net/ unsupported: false, false, false, false passed: false, false, false, false test failed: 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/ result, different first party: https://arthuredelstein.net/, https://arthuredelstein.net/ unsupported: false, false passed: false, false test failed: 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: ab51d6d6-aa87-4915-95e1-ca0cc2a653b5, 2fb9237f-833c-4be7-83bc-b62f36cb1db4, efa69fa7-bbc3-4c18-a192-154696b88c8f, 083eafc2-dd42-475d-8ac7-41ce976a5f33, 3a41099e-afbb-421e-bfe3-92dc6a4d74c7 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: c0b68757-a1d7-4be5-aa66-badf239865f3, e85cf5ab-9c51-45c3-84ac-1b84ddd4d47d, 02acfa8e-83e5-48bd-a812-05dee769f7a6, 017fb147-a703-4204-ac45-0425f8494e70, dccf0a0c-6066-4fed-b392-4390640df56a 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: 3f186427-93e7-4d81-8059-52452751aea5, 37862dbc-e093-41e7-9641-59b9f0fb4323, d161981c-6cf6-4473-97cd-27bb83a9f490, 179db3be-471b-4e1a-9a98-5b33415f6656 result, different first party: , , , unsupported: false, false, false, false passed: true, true, true, true test failed: false, false, false, false
  write: (secret) => sessionStorage.setItem("secret", secret) read: () => sessionStorage.getItem("secret") result, same first party: 3988e863-e299-4253-a3c8-3b0f4e9e50ca, f872d745-fdeb-41e2-87d5-35af5ce5f0d4, 67816c52-c1cd-4ad1-ac3b-ef8c80c1bbae, 59b1abbd-c75c-4720-9997-f434ffd62315, efa5790c-cc47-41c1-98ea-da98083c1b6a result, different first party: 3988e863-e299-4253-a3c8-3b0f4e9e50ca, f872d745-fdeb-41e2-87d5-35af5ce5f0d4, 67816c52-c1cd-4ad1-ac3b-ef8c80c1bbae, 59b1abbd-c75c-4720-9997-f434ffd62315, efa5790c-cc47-41c1-98ea-da98083c1b6a 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: 1eeaa39c-fc45-401b-9b49-8279d558ff2c, ddfb602a-31bd-431c-ae21-423e00c649e6, 46a1a6d5-ea38-4769-9e6b-ee363fb39e1c, fc027800-35cc-4265-b354-e99377121331, 723241f8-e69b-486e-aa83-ae33e0274f29 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: 72a44cd0-9935-4373-a725-705e2b10d285, 1d5f8c43-4bba-4458-8131-857c66d41a43, 78319bba-db56-4aad-8da1-16c0f38957cf, f05ef66e-6490-449f-a78d-364c6cd742bd, 54604a70-2d23-4c32-8a4e-87f8c7919646 result, different first party: 72a44cd0-9935-4373-a725-705e2b10d285, 1d5f8c43-4bba-4458-8131-857c66d41a43, 78319bba-db56-4aad-8da1-16c0f38957cf, f05ef66e-6490-449f-a78d-364c6cd742bd, 54604a70-2d23-4c32-8a4e-87f8c7919646 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: 9cea1b3b-e207-43d2-9795-9538ec6a8090, 3f736480-9a41-4d46-b833-0a48f57239a1, 008b4db4-b64b-48f4-8470-9707c690ac25, 67600378-bf10-43c1-ac1e-5bd745ce3651, 65c17a86-c49f-4b2e-a217-5320c33d8da2 result, different first party: 9cea1b3b-e207-43d2-9795-9538ec6a8090, 3f736480-9a41-4d46-b833-0a48f57239a1, 008b4db4-b64b-48f4-8470-9707c690ac25, 67600378-bf10-43c1-ac1e-5bd745ce3651, 65c17a86-c49f-4b2e-a217-5320c33d8da2 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: 10c0067e-3c96-4710-a9a4-78f1c7158393, 5b0d488a-9be5-4b2c-931d-40b1e8e79252, 31ab50a7-ee6e-427a-8a1d-fc2ef242865f, 4be77fae-05f6-4b5e-b7ca-710b2224dd00, 9ec72172-8287-402b-ab51-ebf15cc76440 result, different first party: 10c0067e-3c96-4710-a9a4-78f1c7158393, 5b0d488a-9be5-4b2c-931d-40b1e8e79252, 31ab50a7-ee6e-427a-8a1d-fc2ef242865f, 4be77fae-05f6-4b5e-b7ca-710b2224dd00, 9ec72172-8287-402b-ab51-ebf15cc76440 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: 7ee67fba-1f61-4db7-b32c-6f8455730284, aef87fb1-d870-4f1f-ae1e-72ad659287e5, 4ab9730c-6aac-4b46-bd43-8cf40979b01d, 78ffe5db-860d-4149-b578-e8bac2d612fa, f81aa39c-9ac9-4131-ba2d-6bea955ef656 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: ac5b7e49-624f-4382-a7fd-5426c57efd53, 6f8c5cd2-3bec-46f1-bff5-7752371234a1, 36516975-7613-4d7d-ad78-31e324dfc4e6, 5aaeca7b-6ce1-45e7-a472-f838d8e5cac2, a10000c3-415d-4a49-9b9d-c2b6e2d8b3be result, different first party: ac5b7e49-624f-4382-a7fd-5426c57efd53, 6f8c5cd2-3bec-46f1-bff5-7752371234a1, 36516975-7613-4d7d-ad78-31e324dfc4e6, 5aaeca7b-6ce1-45e7-a472-f838d8e5cac2, a10000c3-415d-4a49-9b9d-c2b6e2d8b3be 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: b6f550f1-fad6-48b2-880a-249f625edc4d, 2be2e982-8357-48a4-9b81-5f6f243e29ca, 863dd39e-b267-4f1e-882e-eb692c3e0d9e, 25aa5d7f-4d04-4df9-9713-044512569162, 7696c59c-b1a3-46c6-ad91-b171bc7aa1e7 result, different first party: b6f550f1-fad6-48b2-880a-249f625edc4d, 2be2e982-8357-48a4-9b81-5f6f243e29ca, 863dd39e-b267-4f1e-882e-eb692c3e0d9e, 25aa5d7f-4d04-4df9-9713-044512569162, 7696c59c-b1a3-46c6-ad91-b171bc7aa1e7 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: f8bf602c-f399-453d-98f1-86c1c8d561c3, b7a1c758-b9d5-4d33-8dad-c99c7241d02e result, different first party: , unsupported: false, false passed: true, true test failed: false, false
  write: (secret) => sessionStorage.setItem("secret", secret) read: () => sessionStorage.getItem("secret") result, same first party: c1bbe007-f2fe-49c1-a6b0-5f1cbf0be473, 3c08955f-04c9-4a59-96eb-137368cf9926, 61654f23-288a-4d35-90c4-240c5dfca9e4, f7e98d3c-cde5-44e8-a830-24ee3ef838ea, d290e813-c8c0-435a-8a05-6f5f18960650 result, different first party: c1bbe007-f2fe-49c1-a6b0-5f1cbf0be473, 3c08955f-04c9-4a59-96eb-137368cf9926, 61654f23-288a-4d35-90c4-240c5dfca9e4, f7e98d3c-cde5-44e8-a830-24ee3ef838ea, d290e813-c8c0-435a-8a05-6f5f18960650 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: 05ef54b0-253a-4e09-87ac-9e4144d5665e, d1c13fe2-6638-448c-9648-af0109876a35, 3d3fc963-f162-428b-9fc1-b792d4e6387e, 78214b70-de57-4120-86f9-90c6b4f4157e, 225b8760-afaa-48a7-9c36-8c9995b23d94 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: ab51d6d6-aa87-4915-95e1-ca0cc2a653b5, 2fb9237f-833c-4be7-83bc-b62f36cb1db4, efa69fa7-bbc3-4c18-a192-154696b88c8f, 083eafc2-dd42-475d-8ac7-41ce976a5f33, 3a41099e-afbb-421e-bfe3-92dc6a4d74c7 result, different first party: ab51d6d6-aa87-4915-95e1-ca0cc2a653b5, 2fb9237f-833c-4be7-83bc-b62f36cb1db4, efa69fa7-bbc3-4c18-a192-154696b88c8f, 083eafc2-dd42-475d-8ac7-41ce976a5f33, 3a41099e-afbb-421e-bfe3-92dc6a4d74c7 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: c0b68757-a1d7-4be5-aa66-badf239865f3, e85cf5ab-9c51-45c3-84ac-1b84ddd4d47d, 02acfa8e-83e5-48bd-a812-05dee769f7a6, 017fb147-a703-4204-ac45-0425f8494e70, dccf0a0c-6066-4fed-b392-4390640df56a result, different first party: c0b68757-a1d7-4be5-aa66-badf239865f3, e85cf5ab-9c51-45c3-84ac-1b84ddd4d47d, 02acfa8e-83e5-48bd-a812-05dee769f7a6, 017fb147-a703-4204-ac45-0425f8494e70, dccf0a0c-6066-4fed-b392-4390640df56a 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: 3f186427-93e7-4d81-8059-52452751aea5, 37862dbc-e093-41e7-9641-59b9f0fb4323, d161981c-6cf6-4473-97cd-27bb83a9f490, 179db3be-471b-4e1a-9a98-5b33415f6656 result, different first party: 3f186427-93e7-4d81-8059-52452751aea5, 37862dbc-e093-41e7-9641-59b9f0fb4323, d161981c-6cf6-4473-97cd-27bb83a9f490, 179db3be-471b-4e1a-9a98-5b33415f6656 unsupported: false, false, false, false passed: false, false, false, false test failed: 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: 3988e863-e299-4253-a3c8-3b0f4e9e50ca, f872d745-fdeb-41e2-87d5-35af5ce5f0d4, 67816c52-c1cd-4ad1-ac3b-ef8c80c1bbae, 59b1abbd-c75c-4720-9997-f434ffd62315, efa5790c-cc47-41c1-98ea-da98083c1b6a result, different first party: 3988e863-e299-4253-a3c8-3b0f4e9e50ca, f872d745-fdeb-41e2-87d5-35af5ce5f0d4, 67816c52-c1cd-4ad1-ac3b-ef8c80c1bbae, 59b1abbd-c75c-4720-9997-f434ffd62315, efa5790c-cc47-41c1-98ea-da98083c1b6a 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: 1eeaa39c-fc45-401b-9b49-8279d558ff2c, ddfb602a-31bd-431c-ae21-423e00c649e6, 46a1a6d5-ea38-4769-9e6b-ee363fb39e1c, fc027800-35cc-4265-b354-e99377121331, 723241f8-e69b-486e-aa83-ae33e0274f29 result, different first party: 1eeaa39c-fc45-401b-9b49-8279d558ff2c, ddfb602a-31bd-431c-ae21-423e00c649e6, 46a1a6d5-ea38-4769-9e6b-ee363fb39e1c, fc027800-35cc-4265-b354-e99377121331, 723241f8-e69b-486e-aa83-ae33e0274f29 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: 72a44cd0-9935-4373-a725-705e2b10d285, 1d5f8c43-4bba-4458-8131-857c66d41a43, 78319bba-db56-4aad-8da1-16c0f38957cf, f05ef66e-6490-449f-a78d-364c6cd742bd, 54604a70-2d23-4c32-8a4e-87f8c7919646 result, different first party: 72a44cd0-9935-4373-a725-705e2b10d285, 1d5f8c43-4bba-4458-8131-857c66d41a43, 78319bba-db56-4aad-8da1-16c0f38957cf, f05ef66e-6490-449f-a78d-364c6cd742bd, 54604a70-2d23-4c32-8a4e-87f8c7919646 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: 9cea1b3b-e207-43d2-9795-9538ec6a8090, 3f736480-9a41-4d46-b833-0a48f57239a1, 008b4db4-b64b-48f4-8470-9707c690ac25, 67600378-bf10-43c1-ac1e-5bd745ce3651, 65c17a86-c49f-4b2e-a217-5320c33d8da2 result, different first party: 9cea1b3b-e207-43d2-9795-9538ec6a8090, 3f736480-9a41-4d46-b833-0a48f57239a1, 008b4db4-b64b-48f4-8470-9707c690ac25, 67600378-bf10-43c1-ac1e-5bd745ce3651, 65c17a86-c49f-4b2e-a217-5320c33d8da2 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: 10c0067e-3c96-4710-a9a4-78f1c7158393, 5b0d488a-9be5-4b2c-931d-40b1e8e79252, 31ab50a7-ee6e-427a-8a1d-fc2ef242865f, 4be77fae-05f6-4b5e-b7ca-710b2224dd00, 9ec72172-8287-402b-ab51-ebf15cc76440 result, different first party: 10c0067e-3c96-4710-a9a4-78f1c7158393, 5b0d488a-9be5-4b2c-931d-40b1e8e79252, 31ab50a7-ee6e-427a-8a1d-fc2ef242865f, 4be77fae-05f6-4b5e-b7ca-710b2224dd00, 9ec72172-8287-402b-ab51-ebf15cc76440 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: 7ee67fba-1f61-4db7-b32c-6f8455730284, aef87fb1-d870-4f1f-ae1e-72ad659287e5, 4ab9730c-6aac-4b46-bd43-8cf40979b01d, 78ffe5db-860d-4149-b578-e8bac2d612fa, f81aa39c-9ac9-4131-ba2d-6bea955ef656 result, different first party: 7ee67fba-1f61-4db7-b32c-6f8455730284, aef87fb1-d870-4f1f-ae1e-72ad659287e5, 4ab9730c-6aac-4b46-bd43-8cf40979b01d, 78ffe5db-860d-4149-b578-e8bac2d612fa, f81aa39c-9ac9-4131-ba2d-6bea955ef656 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: ac5b7e49-624f-4382-a7fd-5426c57efd53, 6f8c5cd2-3bec-46f1-bff5-7752371234a1, 36516975-7613-4d7d-ad78-31e324dfc4e6, 5aaeca7b-6ce1-45e7-a472-f838d8e5cac2, a10000c3-415d-4a49-9b9d-c2b6e2d8b3be 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: b6f550f1-fad6-48b2-880a-249f625edc4d, 2be2e982-8357-48a4-9b81-5f6f243e29ca, 863dd39e-b267-4f1e-882e-eb692c3e0d9e, 25aa5d7f-4d04-4df9-9713-044512569162, 7696c59c-b1a3-46c6-ad91-b171bc7aa1e7 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: f8bf602c-f399-453d-98f1-86c1c8d561c3, b7a1c758-b9d5-4d33-8dad-c99c7241d02e result, different first party: f8bf602c-f399-453d-98f1-86c1c8d561c3, b7a1c758-b9d5-4d33-8dad-c99c7241d02e unsupported: false, false passed: false, false test failed: 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: c1bbe007-f2fe-49c1-a6b0-5f1cbf0be473, 3c08955f-04c9-4a59-96eb-137368cf9926, 61654f23-288a-4d35-90c4-240c5dfca9e4, f7e98d3c-cde5-44e8-a830-24ee3ef838ea, d290e813-c8c0-435a-8a05-6f5f18960650 result, different first party: c1bbe007-f2fe-49c1-a6b0-5f1cbf0be473, 3c08955f-04c9-4a59-96eb-137368cf9926, 61654f23-288a-4d35-90c4-240c5dfca9e4, f7e98d3c-cde5-44e8-a830-24ee3ef838ea, d290e813-c8c0-435a-8a05-6f5f18960650 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: 05ef54b0-253a-4e09-87ac-9e4144d5665e, d1c13fe2-6638-448c-9648-af0109876a35, 3d3fc963-f162-428b-9fc1-b792d4e6387e, 78214b70-de57-4120-86f9-90c6b4f4157e, 225b8760-afaa-48a7-9c36-8c9995b23d94 result, different first party: 05ef54b0-253a-4e09-87ac-9e4144d5665e, d1c13fe2-6638-448c-9648-af0109876a35, 3d3fc963-f162-428b-9fc1-b792d4e6387e, 78214b70-de57-4120-86f9-90c6b4f4157e, 225b8760-afaa-48a7-9c36-8c9995b23d94 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 result: 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 result: 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 passed: 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: false,false,false,false,false passed: false,false,false,false,false
  upgraded: true,true passed: 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 passed: 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: false,false,false,false,false passed: false,false,false,false,false
  upgraded: true,true passed: 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 result: 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: false,false result: 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 result: 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 result: 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
  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
  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,true,false,false
  passed: false,false,false,false,false
  passed: true,true,true,true
  passed: false,true,false,true,false
  passed: true,true,true,false,false
  passed: false,true,true,true,true
  passed: true,false,false,false,false
  passed: false,false,true,false,false
  passed: false,false,false,false,true
  passed: false,false,true,false,false
  passed: false,false,false,false,true
  passed: true,true
  passed: false,false,false,false,true
  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 readSameFirstParty: 5.183.209.217,217.160.174.204,185.220.101.141,185.220.100.255 readDifferentFirstParty: 5.183.209.217,217.160.174.204,185.220.101.141,185.220.100.255 passed: false,false,false,false testFailed: 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 readSameFirstParty: 209.127.17.242,2a0b:f4c2:1::1 readDifferentFirstParty: 2a07:e01:2:13::2,2620:7:6001::162 passed: true,true testFailed: 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 passed: 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: true,true passed: 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: 1296,1296,1296,1296,1296 passed: false,false,false,false,false
  expression: undefined desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 1296,1296,1296,1296,1296 passed: false,false,false,false,false
  expression: undefined desired expression: innerHeight actual value: 1440,1440,1440,1440 desired value: 1296,1296,1296,1296 passed: false,false,false,false
  expression: undefined desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 1292,1292,1292,1292,1292 passed: false,false,false,false,false
  expression: undefined desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 1292,1292,1292,1292,1292 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: 1310,1310,1310,1310,1310 passed: false,false,false,false,false
  expression: undefined desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 1310,1310,1310,1310,1310 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 desired value: 1000,1000 passed: true,true
  expression: undefined desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 1278,1237,1237,1237,1237 passed: false,false,false,false,false
  expression: undefined desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 1278,1278,1278,1278,1278 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: 1200,1200,1200,1200,1200 passed: false,false,false,false,false
  expression: undefined desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 1200,1200,1200,1200,1200 passed: false,false,false,false,false
  expression: undefined desired expression: innerWidth actual value: 2560,2560,2560,2560 desired value: 1200,1200,1200,1200 passed: false,false,false,false
  expression: undefined desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 1200,1200,1200,1200,1200 passed: false,false,false,false,false
  expression: undefined desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 1200,1200,1200,1200,1200 passed: false,false,false,false,false
  expression: undefined desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 2560,1280,1280,1280,1280 passed: true,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: 1240,1240,1240,1240,1240 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 desired value: 1000,1000 passed: true,true
  expression: undefined desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 1405,1405,1405,1405,1405 passed: false,false,false,false,false
  expression: undefined desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 1405,1405,1405,1405,1405 passed: false,false,false,false,false
outerHeightHeight of the browser window in pixels, including browser chrome.
  expression: outerHeight desired expression: innerHeight actual value: 1371,1371,1371,1371,1371 desired value: 1296,1296,1296,1296,1296 passed: false,false,false,false,false
  expression: outerHeight desired expression: innerHeight actual value: 1371,1371,1371,1371,1371 desired value: 1296,1296,1296,1296,1296 passed: false,false,false,false,false
  expression: outerHeight desired expression: innerHeight actual value: 1371,1371,1371,1371 desired value: 1296,1296,1296,1296 passed: false,false,false,false
  expression: outerHeight desired expression: innerHeight actual value: 1371,1371,1371,1371,1371 desired value: 1292,1292,1292,1292,1292 passed: false,false,false,false,false
  expression: outerHeight desired expression: innerHeight actual value: 1371,1371,1371,1371,1371 desired value: 1292,1292,1292,1292,1292 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: 1415,1415,1415,1415,1415 desired value: 1310,1310,1310,1310,1310 passed: false,false,false,false,false
  expression: outerHeight desired expression: innerHeight actual value: 1415,1415,1415,1415,1415 desired value: 1310,1310,1310,1310,1310 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 desired value: 1000,1000 passed: true,true
  expression: outerHeight desired expression: innerHeight actual value: 1371,1371,1371,1371,1371 desired value: 1278,1237,1237,1237,1237 passed: false,false,false,false,false
  expression: outerHeight desired expression: innerHeight actual value: 1371,1371,1371,1371,1371 desired value: 1278,1278,1278,1278,1278 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: 1296,1296,1296,1296,1296 passed: false,false,false,false,false
  expression: screen.height desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 1296,1296,1296,1296,1296 passed: false,false,false,false,false
  expression: screen.height desired expression: innerHeight actual value: 1440,1440,1440,1440 desired value: 1296,1296,1296,1296 passed: false,false,false,false
  expression: screen.height desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 1292,1292,1292,1292,1292 passed: false,false,false,false,false
  expression: screen.height desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 1292,1292,1292,1292,1292 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: 1310,1310,1310,1310,1310 passed: false,false,false,false,false
  expression: screen.height desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 1310,1310,1310,1310,1310 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 desired value: 1000,1000 passed: true,true
  expression: screen.height desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 1278,1237,1237,1237,1237 passed: false,false,false,false,false
  expression: screen.height desired expression: innerHeight actual value: 1440,1440,1440,1440,1440 desired value: 1278,1278,1278,1278,1278 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: 1200,1200,1200,1200,1200 passed: false,false,false,false,false
  expression: screen.width desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 1200,1200,1200,1200,1200 passed: false,false,false,false,false
  expression: screen.width desired expression: innerWidth actual value: 2560,2560,2560,2560 desired value: 1200,1200,1200,1200 passed: false,false,false,false
  expression: screen.width desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 1200,1200,1200,1200,1200 passed: false,false,false,false,false
  expression: screen.width desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 1200,1200,1200,1200,1200 passed: false,false,false,false,false
  expression: screen.width desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 2560,1280,1280,1280,1280 passed: true,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: 1240,1240,1240,1240,1240 passed: false,false,false,false,false
  expression: screen.width desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 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 desired value: 1000,1000 passed: true,true
  expression: screen.width desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 1405,1405,1405,1405,1405 passed: false,false,false,false,false
  expression: screen.width desired expression: innerWidth actual value: 2560,2560,2560,2560,2560 desired value: 1405,1405,1405,1405,1405 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: 363,363,363,363,363 desired value: 0,0,0,0,0 passed: false,false,false,false,false
  expression: screenX desired expression: 0 actual value: 363,363,363,363,363 desired value: 0,0,0,0,0 passed: false,false,false,false,false
  expression: screenX desired expression: 0 actual value: 363,363,363,363 desired value: 0,0,0,0 passed: false,false,false,false
  expression: screenX desired expression: 0 actual value: 3740,3740,3740,3740,3740 desired value: 0,0,0,0,0 passed: false,false,false,false,false
  expression: screenX desired expression: 0 actual value: 3740,3740,3740,3740,3740 desired value: 0,0,0,0,0 passed: false,false,false,false,false
  expression: screenX desired expression: 0 actual value: 397,2560,2560,2560,2560 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: 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: 2600,2600,2600,2600,2600 desired value: 0,0,0,0,0 passed: false,false,false,false,false
  expression: screenX desired expression: 0 actual value: 3796,3796,3796,3796,3796 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: 0,0 desired value: 0,0 passed: true,true
  expression: screenX desired expression: 0 actual value: 3503,3503,3503,3503,3503 desired value: 0,0,0,0,0 passed: false,false,false,false,false
  expression: screenX desired expression: 0 actual value: 3503,3503,3503,3503,3503 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: 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 desired value: 0,0,0,0 passed: 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: 133,25,25,25,25 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: 160,160,160,160,160 desired value: 0,0,0,0,0 passed: false,false,false,false,false
  expression: screenY desired expression: 0 actual value: 189,189,189,189,189 desired value: 0,0,0,0,0 passed: false,false,false,false,false
  expression: screenY desired expression: 0 actual value: 0,0 desired value: 0,0 passed: true,true
  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
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
  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
  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
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 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
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 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
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 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
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 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
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 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
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 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
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 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
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 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
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 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
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
igshidInstagram tracking parameter
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 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
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
mkt_tokAdobe Marketo tracking parameter
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 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
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 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
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 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
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 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
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 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
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 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
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 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
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 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
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 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
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 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
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 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
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false
  value: 3230257842465605 passed: false,false,false,false,false
  value: 3230257842465605 passed: false,false,false,false,false