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WPT

This page compares scores on the Web Platform Tests across web engines, using the latest master runs from wpt.fyi and Blitz's own test runner.

wpt / html / cross-origin-embedder-policy

Spec: https://html.spec.whatwg.org/multipage/origin.html#coep ↗

Runs: Chrome 155.0.8039.0 (wpt@47d833bbc, 2026-09-03) | Firefox 157.0a1 (wpt@47d833bbc, 2026-09-03) | Safari 251 preview (wpt@5ce815a83, 2026-08-27) | Ladybird 1.0-3d220 (wpt@476394464, 2026-09-03) | Servo Servo 0.6 (wpt@7e3d005d7, 2026-09-03) | Blitz a50cb8971 (wpt@a95401e4e, 2026-09-03)

Sort areas: alphabetical | by subtest count

AreaChromeFirefoxSafariLadybirdServoBlitz
Total91.5%527/57676.9%443/57678.6%453/57640.3%232/57635.1%202/5760.0%0/576
credentialless98.4%180/18394.5%173/18376.5%140/18359.0%108/18345.4%83/1830.0%0/183
multi-globals0.0%0/10.0%0/1100.0%1/10.0%0/10.0%0/10.0%0/1
TestChromeFirefoxSafariLadybirdServoBlitz
about-blank-popup.https.htmlPASSFAILPASSFAILFAILNOT RUN
blob.https.html9/99/96/90/90/9NOT RUN
block-local-documents-inheriting-none.https.htmlPASSFAILFAILERRORFAILNOT RUN
cache-storage-reporting-dedicated-worker.https.html2/20/20/20/20/2NOT RUN
cache-storage-reporting-document.https.html2/20/20/20/20/2NOT RUN
cache-storage-reporting-service-worker.https.html2/20/20/20/20/2NOT RUN
cache-storage-reporting-shared-worker.https.html2/20/20/20/20/2NOT RUN
coep-frame-javascript.https.htmlPASSPASSPASSFAILFAILNOT RUN
coep-on-response-from-service-worker.https.html13/1313/1313/130/130/13NOT RUN
cross-origin-isolated-permission-iframe.https.window.html8/83/83/85/80/8NOT RUN
cross-origin-isolated-permission-worker.https.window.html14/158/1513/156/150/15NOT RUN
data.https.htmlPASSPASSPASSFAILFAILNOT RUN
dedicated-worker-cache-storage.https.html7/88/88/84/80/8NOT RUN
dedicated-worker.https.html6/1411/1411/141/141/14NOT RUN
header-parsing.https.html25/2515/2525/2516/2514/25NOT RUN
iframe-history-none-require-corp.https.htmlPASSPASSPASSPASSPASSNOT RUN
javascript.https.htmlPASSPASSPASSFAILFAILNOT RUN
meta-http-equiv.https.htmlPASSPASSPASSPASSPASSNOT RUN
no-secure-context.htmlPASSPASSPASSPASSPASSNOT RUN
non-initial-about-blank.https.htmlPASSPASSPASSPASSPASSNOT RUN
none-load-from-cache-storage.https.html29/2929/2929/290/290/29NOT RUN
none-sw-from-none.https.html13/1313/1313/1310/1312/13NOT RUN
none-sw-from-require-corp.https.html13/1313/1313/138/1310/13NOT RUN
none.https.html4/44/44/44/43/4NOT RUN
reflection-credentialless.tentative.https.any.htmlFAILFAILFAILFAILFAILNOT RUN
reflection-credentialless.tentative.https.any.serviceworker-module.htmlFAILFAILFAILERRORERRORNOT RUN
reflection-credentialless.tentative.https.any.serviceworker.htmlFAILFAILFAILERRORERRORNOT RUN
reflection-credentialless.tentative.https.any.sharedworker-module.htmlFAILFAILFAILFAILFAILNOT RUN
reflection-credentialless.tentative.https.any.sharedworker.htmlFAILFAILFAILFAILFAILNOT RUN
reflection-credentialless.tentative.https.any.worker.htmlFAILFAILFAILFAILFAILNOT RUN
reflection-require-corp.tentative.https.any.htmlFAILFAILFAILFAILFAILNOT RUN
reflection-require-corp.tentative.https.any.serviceworker-module.htmlFAILFAILFAILERRORERRORNOT RUN
reflection-require-corp.tentative.https.any.serviceworker.htmlFAILFAILFAILERRORERRORNOT RUN
reflection-require-corp.tentative.https.any.sharedworker-module.htmlFAILFAILFAILFAILFAILNOT RUN
reflection-require-corp.tentative.https.any.sharedworker.htmlFAILFAILFAILFAILFAILNOT RUN
reflection-require-corp.tentative.https.any.worker.htmlFAILFAILFAILFAILFAILNOT RUN
reflection-unsafe-none.tentative.https.any.htmlFAILFAILFAILFAILFAILNOT RUN
reflection-unsafe-none.tentative.https.any.serviceworker-module.htmlFAILFAILFAILERRORERRORNOT RUN
reflection-unsafe-none.tentative.https.any.serviceworker.htmlFAILFAILFAILERRORERRORNOT RUN
reflection-unsafe-none.tentative.https.any.sharedworker-module.htmlFAILFAILFAILFAILFAILNOT RUN
reflection-unsafe-none.tentative.https.any.sharedworker.htmlFAILFAILFAILFAILFAILNOT RUN
reflection-unsafe-none.tentative.https.any.worker.htmlFAILFAILFAILFAILFAILNOT RUN
report-only-require-corp.https.html4/44/44/44/44/4NOT RUN
reporting-navigation.https.html28/3014/3030/3014/3014/30NOT RUN
reporting-subresource-corp.https.html22/262/2612/262/262/26NOT RUN
reporting-to-document-reporting-endpoint.https.window.html3/30/33/30/30/3NOT RUN
reporting-to-endpoint.https.html0/50/50/50/50/5NOT RUN
reporting-to-frame-owner.https.html9/93/93/93/93/9NOT RUN
reporting-to-worker-owner.https.html9/93/93/93/93/9NOT RUN
require-corp-about-blank.https.html3/33/33/32/32/3NOT RUN
require-corp-about-srcdoc.https.html3/33/33/32/32/3NOT RUN
require-corp-cached-images.https.html5/55/55/53/53/5NOT RUN
require-corp-load-from-cache-storage.https.html29/2927/2929/290/290/29NOT RUN
require-corp-revalidated-images.https.html5/55/55/53/53/5NOT RUN
require-corp-sw-from-none.https.html13/1313/1313/139/1311/13NOT RUN
require-corp-sw-from-require-corp.https.html13/1313/1313/138/1310/13NOT RUN
require-corp-sw.https.html6/66/66/60/60/6NOT RUN
require-corp-worker-script-revalidation.htmlPASSPASSPASSPASSPASSNOT RUN
require-corp.https.html16/1616/1616/165/1610/16NOT RUN
sandbox.https.htmlPASSPASSPASSFAILFAILNOT RUN
service-worker-cache-storage.https.html4/44/44/40/40/4NOT RUN
shared-workers.https.html5/115/116/114/114/11NOT RUN
srcdoc.https.htmlPASSPASSPASSFAILFAILNOT RUN
worker-inheritance.sub.https.html9/98/95/93/93/9NOT RUN