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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-opener-policy

Spec: https://html.spec.whatwg.org/multipage/origin.html#cross-origin-opener-policies ↗

Runs: Chrome 155.0.8039.0 (wpt@426cae6e2, 2026-09-03) | Firefox 157.0a1 (wpt@426cae6e2, 2026-09-03) | Safari 251 preview (wpt@5ce815a83, 2026-08-27) | Ladybird 1.0-a9df8 (wpt@e6996908b, 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
Total94.4%609/64579.1%510/64588.4%570/64531.6%204/64526.8%173/6450.0%0/645
historical100.0%76/76100.0%76/76100.0%76/7671.1%54/7647.4%36/760.0%0/76
reporting90.5%114/12617.5%22/12648.4%61/12615.1%19/12621.4%27/1260.0%0/126
tentative100.0%2/20.0%0/2100.0%2/20.0%0/20.0%0/20.0%0/2
TestChromeFirefoxSafariLadybirdServoBlitz
blob-popup.https.htmlPASSPASSPASSFAILFAILNOT RUN
coep-blob-popup.https.html3/32/33/30/30/3NOT RUN
coep-navigate-popup.https.html?0-14/44/44/41/41/4NOT RUN
coep-navigate-popup.https.html?2-34/44/44/40/40/4NOT RUN
coep-navigate-popup.https.html?4-last4/44/44/40/40/4NOT RUN
coep-redirect.https.html6/66/66/61/61/6NOT RUN
coep-with-cross-origin.https.html5/55/55/50/50/5NOT RUN
coep-with-same-origin.https.html5/55/55/51/51/5NOT RUN
coep-with-same-site.https.html5/55/55/50/50/5NOT RUN
coop-coep-sandbox.https.html4/44/44/43/43/4NOT RUN
coop-csp-sandbox-navigate.https.html1/22/22/20/20/2NOT RUN
coop-csp-sandbox.https.html2/22/22/22/21/2NOT RUN
coop-navigate-same-origin-csp-sandbox.htmlPASSFAILPASSFAILFAILNOT RUN
coop-navigated-history-popup.https.htmlPASSPASSFAILFAILTIMEOUTNOT RUN
coop-navigated-popup.https.htmlPASSPASSPASSFAILFAILNOT RUN
coop-noopener-allow-popups.https.html9/90/99/90/90/9NOT RUN
coop-popup-opener-navigates.https.htmlPASSPASSPASSFAILFAILNOT RUN
coop-same-origin-allow-popups-document-write.htmlPASSPASSPASSCRASHFAILNOT RUN
coop-sandbox-cuts-opener.https.html2/20/20/20/20/2NOT RUN
coop-sandbox-redirects-cuts-opener.https.html2/20/20/20/20/2NOT RUN
coop-sandbox.https.html4/44/44/40/43/4NOT RUN
header-parsing-failures.https.html?1-44/44/44/43/41/4NOT RUN
header-parsing-failures.https.html?12-last5/55/55/55/55/5NOT RUN
header-parsing-failures.https.html?5-84/44/44/44/44/4NOT RUN
header-parsing-failures.https.html?9-124/44/44/44/40/4NOT RUN
header-parsing-non-ascii.https.htmlPASSPASSPASSPASSPASSNOT RUN
header-parsing-repeated.https.htmlPASSPASSPASSPASSPASSNOT RUN
header-parsing-successes.https.html6/66/66/60/60/6NOT RUN
iframe-popup-same-origin-allow-popups-to-same-origin-allow-popups.https.html?1-26/66/66/63/63/6NOT RUN
iframe-popup-same-origin-allow-popups-to-same-origin-allow-popups.https.html?3-46/66/66/60/60/6NOT RUN
iframe-popup-same-origin-allow-popups-to-same-origin-allow-popups.https.html?5-60/66/66/60/60/6NOT RUN
iframe-popup-same-origin-allow-popups-to-same-origin-allow-popups.https.html?7-86/66/66/60/60/6NOT RUN
iframe-popup-same-origin-allow-popups-to-same-origin-allow-popups.https.html?9-last3/33/33/30/30/3NOT RUN
iframe-popup-same-origin-allow-popups-to-same-origin.https.html?1-26/66/66/60/60/6NOT RUN
iframe-popup-same-origin-allow-popups-to-same-origin.https.html?3-46/66/66/60/60/6NOT RUN
iframe-popup-same-origin-allow-popups-to-same-origin.https.html?5-66/66/66/60/60/6NOT RUN
iframe-popup-same-origin-allow-popups-to-same-origin.https.html?7-86/66/66/60/60/6NOT RUN
iframe-popup-same-origin-allow-popups-to-same-origin.https.html?9-last3/33/33/30/30/3NOT RUN
iframe-popup-same-origin-allow-popups-to-unsafe-none.https.html?1-26/66/66/66/65/6NOT RUN
iframe-popup-same-origin-allow-popups-to-unsafe-none.https.html?3-40/66/66/60/62/6NOT RUN
iframe-popup-same-origin-allow-popups-to-unsafe-none.https.html?5-66/66/66/66/63/6NOT RUN
iframe-popup-same-origin-allow-popups-to-unsafe-none.https.html?7-86/66/66/66/60/6NOT RUN
iframe-popup-same-origin-allow-popups-to-unsafe-none.https.html?9-last3/33/33/33/33/3NOT RUN
iframe-popup-same-origin-to-same-origin.https.html?1-26/66/66/63/63/6NOT RUN
iframe-popup-same-origin-to-same-origin.https.html?3-46/66/66/60/60/6NOT RUN
iframe-popup-same-origin-to-same-origin.https.html?5-66/66/66/60/60/6NOT RUN
iframe-popup-same-origin-to-same-origin.https.html?7-86/66/66/60/60/6NOT RUN
iframe-popup-same-origin-to-same-origin.https.html?9-last3/33/33/30/30/3NOT RUN
iframe-popup-same-origin-to-unsafe-none.https.html?1-26/66/66/60/60/6NOT RUN
iframe-popup-same-origin-to-unsafe-none.https.html?3-46/66/66/60/60/6NOT RUN
iframe-popup-same-origin-to-unsafe-none.https.html?5-66/66/66/60/60/6NOT RUN
iframe-popup-same-origin-to-unsafe-none.https.html?7-86/66/66/60/60/6NOT RUN
iframe-popup-same-origin-to-unsafe-none.https.html?9-last3/33/33/30/30/3NOT RUN
iframe-popup-unsafe-none-to-same-origin.https.html?1-26/66/66/60/60/6NOT RUN
iframe-popup-unsafe-none-to-same-origin.https.html?3-46/66/66/60/60/6NOT RUN
iframe-popup-unsafe-none-to-same-origin.https.html?5-66/66/66/60/60/6NOT RUN
iframe-popup-unsafe-none-to-same-origin.https.html?7-86/66/66/60/60/6NOT RUN
iframe-popup-unsafe-none-to-same-origin.https.html?9-last3/33/33/30/30/3NOT RUN
iframe-popup-unsafe-none-to-unsafe-none.https.html?1-26/66/66/66/65/6NOT RUN
iframe-popup-unsafe-none-to-unsafe-none.https.html?3-40/66/66/66/62/6NOT RUN
iframe-popup-unsafe-none-to-unsafe-none.https.html?5-66/66/66/66/63/6NOT RUN
iframe-popup-unsafe-none-to-unsafe-none.https.html?7-86/66/66/66/60/6NOT RUN
iframe-popup-unsafe-none-to-unsafe-none.https.html?9-last3/33/33/30/33/3NOT RUN
javascript-url.https.html?1-22/22/22/22/22/2NOT RUN
javascript-url.https.html?11-120/22/22/20/20/2NOT RUN
javascript-url.https.html?13-142/22/22/20/20/2NOT RUN
javascript-url.https.html?15-162/22/22/20/20/2NOT RUN
javascript-url.https.html?17-last2/22/22/21/21/2NOT RUN
javascript-url.https.html?3-42/22/22/20/20/2NOT RUN
javascript-url.https.html?5-62/22/22/20/20/2NOT RUN
javascript-url.https.html?7-82/22/22/22/22/2NOT RUN
javascript-url.https.html?9-102/22/22/20/21/2NOT RUN
navigate-to-aboutblank.https.html5/54/55/50/50/5NOT RUN
navigate-top-to-aboutblank.https.html0/30/30/30/30/3NOT RUN
no-https.html2/22/22/22/21/2NOT RUN
popup-coop-by-sw.https.html?1-44/40/44/40/40/4NOT RUN
popup-coop-by-sw.https.html?5-last4/40/44/40/40/4NOT RUN
popup-meta-http-equiv.https.htmlPASSPASSPASSPASSPASSNOT RUN
popup-redirect-cache.https.html?0-12/22/22/20/20/2NOT RUN
popup-redirect-cache.https.html?2-32/22/22/20/20/2NOT RUN
popup-redirect-cache.https.html?4-52/22/22/20/20/2NOT RUN
popup-redirect-cache.https.html?6-72/22/22/20/20/2NOT RUN
popup-redirect-cache.https.html?8-lastPASSPASSPASSFAILFAILNOT RUN
popup-redirect-same-origin-allow-popups.https.html2/20/22/20/20/2NOT RUN
popup-same-origin-allow-popups-with-cross-origin.https.html8/88/88/80/86/8NOT RUN
popup-same-origin-allow-popups-with-same-origin.https.html8/88/88/80/87/8NOT RUN
popup-same-origin-allow-popups-with-same-site.https.html8/88/88/86/80/8NOT RUN
popup-same-origin-non-initial-about-blank.https.htmlPASSPASSPASSPASSPASSNOT RUN
popup-same-origin-with-cross-origin.https.html8/88/88/80/80/8NOT RUN
popup-same-origin-with-same-origin.https.html8/88/88/81/81/8NOT RUN
popup-same-origin-with-same-site.https.html8/88/88/80/80/8NOT RUN
popup-unsafe-none-with-cross-origin.https.html8/88/88/80/86/8NOT RUN
popup-unsafe-none-with-same-origin.https.html8/88/88/86/86/8NOT RUN
popup-unsafe-none-with-same-site.https.html8/88/88/86/80/8NOT RUN
popup-unspecified-with-cross-origin.https.html8/88/88/86/86/8NOT RUN
popup-unspecified-with-same-origin.https.html8/88/88/86/86/8NOT RUN
popup-unspecified-with-same-site.https.html8/88/88/86/80/8NOT RUN
popup-with-structured-header.https.html3/33/33/31/31/3NOT RUN
resource-popup.https.html12/1212/1210/127/128/12NOT RUN