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conformance · v134

v134 · bounce-tracking-mitigations-on-http-cache — conformance probe

5 assertions drawn from the spec. Each is a single contract the spec text makes. Pass/fail reflects what this browser executed; blocked means the contract was not run because it needs user mediation, hardware, or another unavailable precondition. Open the page in Chrome stable / canary / Firefox / Safari to compare.

browser: spec: https://privacycg.github.io/nav-tracking-mitigations/#bounce-tracking-mitigations chromestatus: #6299570819301376 generated 2026-06-01T08:30:00Z by conformance-author-v1-subagent
0
pass
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fail
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blocked
5
total
id contract kind verdict detail
storage-access-api Storage Access API is exposed — the recommended replacement when first-party state is cleared by bounce-tracking mitigations. typeof
has-storage-access document.hasStorageAccess is exposed so pages can check state after a bounce-tracking-driven clear. typeof
clear-site-data-not-blocked-on-throw Fetching a URL with no body / no special header from same-origin does not throw (mitigations are silent — there is no observable error). script
cookie-store-exposed cookieStore is exposed when present — pages can observe cookie-clearing side effects of mitigations. script
no-direct-api-surface Bounce-tracking mitigations are a UA-internal heuristic — there is intentionally no document.bounceTrackingMitigation API to query. script