Cross-Origin-Opener-Policy · ControlCurrent

Support in current browsers

Checked against the current browser versions recorded in MDN browser data 8.1.5.

Browser	Minimum	Outcome	Reason
Chrome	155	Works	Every required mapped BCD feature is available without a recorded qualification.
Edge	154	Works	Every required mapped BCD feature is available without a recorded qualification.
Firefox	157	Works	Every required mapped BCD feature is available without a recorded qualification.
Safari	27	Works	Every required mapped BCD feature is available without a recorded qualification.
Chrome for Android	155	Works	Every required mapped BCD feature is available without a recorded qualification.
Firefox for Android	157	Works	Every required mapped BCD feature is available without a recorded qualification.
Safari on iOS	27	Works	Every required mapped BCD feature is available without a recorded qualification.
Android WebView	155	Not supported	At least one required mapped feature is not available at this browser baseline.
Samsung Internet	30.0	Works	Every required mapped BCD feature is available without a recorded qualification.

The release trace

How support changed

Each segment groups recorded releases with the same result. Gaps between recorded versions are not filled in. This is support at each release, rather than the planner’s check of every release above a minimum.

Chrome

http.headers.Cross-Origin-Opener-Policy

1 – 8181 recorded releases
Not supported
83 – 15573 recorded releases
Works

Edge

http.headers.Cross-Origin-Opener-Policy

12 – 8110 recorded releases
Not supported
83 – 15472 recorded releases
Works

Firefox

http.headers.Cross-Origin-Opener-Policy

1 – 7881 recorded releases
Not supported
79 – 15779 recorded releases
Works

Safari

http.headers.Cross-Origin-Opener-Policy

1 – 15.127 recorded releases
Not supported
15.2 – 2734 recorded releases
Works

Chrome for Android

http.headers.Cross-Origin-Opener-Policy

18 – 8158 recorded releases
Not supported
83 – 15573 recorded releases
Works

Firefox for Android

http.headers.Cross-Origin-Opener-Policy

4 – 6862 recorded releases
Not supported
79 – 15779 recorded releases
Works

Safari on iOS

http.headers.Cross-Origin-Opener-Policy

1 – 15.124 recorded releases
Not supported
15.2 – 2734 recorded releases
Works

Android WebView

http.headers.Cross-Origin-Opener-Policy

1 – 155126 recorded releases
Not supported

Samsung Internet

http.headers.Cross-Origin-Opener-Policy

1.0 – 12.129 recorded releases
Not supported
13.0 – 30.023 recorded releases
Works

BCD 8.1.5 · catalogue 2.3.0. Source corrections can change this trace without a new browser release.

A fixed result snapshot

What those browser runs reported

Reviewed 11 October 2026

These are published results from specific stable-labelled browser builds. They are separate from the compatibility calculation and from evidence about your application. File outcomes and subtest counts stay separate. OK describes a completed harness, which can still contain failing subtests; Pass and Fail can also describe tests without a harness.

Exact browser builds, systems and source revision

firefox 157.0 · linux 22.04 · stable
Run 4877098740350976 · 2026-10-06T10:36:34.451Z to 2026-10-06T11:50:28.028Z
cc74d2669f5de548e808779877d1d33339ec5115
safari 27.0 (22625.1.29.11.27) · mac 27.0 · stable
Run 5164107446878208 · 2026-10-06T06:14:03.64Z to 2026-10-06T09:13:55.471Z
cc74d2669f5de548e808779877d1d33339ec5115
chrome 154.0.8037.92 · linux 22.04 · stable
Run 6218298311311360 · 2026-10-06T07:44:01.102Z to 2026-10-06T11:57:16.569Z
cc74d2669f5de548e808779877d1d33339ec5115

“Stable” is the upstream run label. Complete runtime flags were not supplied by the summary API. These results do not cover every browser version, mobile platform or operating system.

Cross-Origin-Opener-Policy

html/cross-origin-opener-policy

161 test files retained from 161 returned search matches. Only this exact directory prefix is included. This is the returned result inventory, not a claim that every possible suite test ran.

Browser build	Subtests passed / reported	File outcomes
firefox 157.0	510 / 651	150 OK · 11 Timeout
safari 27.0 (22625.1.29.11.27)	573 / 651	159 OK · 2 Timeout
chrome 154.0.8037.92	614 / 619	152 OK · 8 Error · 1 Timeout

Read all 161 retained file results

Test file	firefox	safari	chrome
`blob-popup.https.html`	OK · 1/1 subtests	OK · 1/1 subtests	OK · 1/1 subtests
`coep-blob-popup.https.html`	OK · 2/3 subtests	OK · 3/3 subtests	OK · 3/3 subtests
`coep-navigate-popup.https.html?0-1`	OK · 4/4 subtests	OK · 4/4 subtests	OK · 4/4 subtests
`coep-navigate-popup.https.html?2-3`	OK · 4/4 subtests	OK · 4/4 subtests	OK · 4/4 subtests
`coep-navigate-popup.https.html?4-last`	OK · 4/4 subtests	OK · 4/4 subtests	OK · 4/4 subtests
`coep-redirect.https.html`	OK · 6/6 subtests	OK · 6/6 subtests	OK · 6/6 subtests
`coep-with-cross-origin.https.html`	OK · 5/5 subtests	OK · 5/5 subtests	OK · 5/5 subtests
`coep-with-same-origin.https.html`	OK · 5/5 subtests	OK · 5/5 subtests	OK · 5/5 subtests
`coep-with-same-site.https.html`	OK · 5/5 subtests	OK · 5/5 subtests	OK · 5/5 subtests
`coop-coep-sandbox.https.html`	OK · 4/4 subtests	OK · 4/4 subtests	OK · 4/4 subtests
`coop-csp-sandbox-navigate.https.html`	OK · 2/2 subtests	OK · 2/2 subtests	OK · 1/2 subtests
`coop-csp-sandbox.https.html`	OK · 2/2 subtests	OK · 2/2 subtests	OK · 2/2 subtests
`coop-navigate-same-origin-csp-sandbox.html`	OK · 0/1 subtests	OK · 1/1 subtests	OK · 1/1 subtests
`coop-navigated-history-popup.https.html`	OK · 1/1 subtests	OK · 0/1 subtests	OK · 1/1 subtests
`coop-navigated-popup.https.html`	OK · 1/1 subtests	OK · 1/1 subtests	OK · 1/1 subtests
`coop-noopener-allow-popups.https.html`	Timeout · 0/9 subtests	OK · 9/9 subtests	OK · 9/9 subtests
`coop-popup-opener-navigates.https.html`	OK · 1/1 subtests	OK · 1/1 subtests	OK · 1/1 subtests
`coop-same-origin-allow-popups-document-write.html`	OK · 1/1 subtests	OK · 1/1 subtests	OK · 1/1 subtests
`coop-sandbox-cuts-opener.https.html`	OK · 0/2 subtests	OK · 0/2 subtests	OK · 2/2 subtests
`coop-sandbox-redirects-cuts-opener.https.html`	OK · 0/2 subtests	OK · 0/2 subtests	OK · 2/2 subtests
`coop-sandbox.https.html`	OK · 4/4 subtests	OK · 4/4 subtests	OK · 4/4 subtests
`header-parsing-failures.https.html?1-4`	OK · 4/4 subtests	OK · 4/4 subtests	OK · 4/4 subtests
`header-parsing-failures.https.html?12-last`	OK · 5/5 subtests	OK · 5/5 subtests	OK · 5/5 subtests
`header-parsing-failures.https.html?5-8`	OK · 4/4 subtests	OK · 4/4 subtests	OK · 4/4 subtests
`header-parsing-failures.https.html?9-12`	OK · 4/4 subtests	OK · 4/4 subtests	OK · 4/4 subtests
`header-parsing-non-ascii.https.html`	OK · 1/1 subtests	OK · 1/1 subtests	OK · 1/1 subtests
`header-parsing-repeated.https.html`	OK · 1/1 subtests	OK · 1/1 subtests	OK · 1/1 subtests
`header-parsing-successes.https.html`	OK · 6/6 subtests	OK · 6/6 subtests	OK · 6/6 subtests
`historical/coep-navigate-popup-unsafe-inherit.https.html`	OK · 4/4 subtests	OK · 4/4 subtests	OK · 4/4 subtests
`historical/popup-same-origin-unsafe-allow-outgoing-with-cross-origin.https.html`	OK · 8/8 subtests	OK · 8/8 subtests	OK · 8/8 subtests
`historical/popup-same-origin-unsafe-allow-outgoing-with-same-origin.https.html`	OK · 8/8 subtests	OK · 8/8 subtests	OK · 8/8 subtests
`historical/popup-same-origin-unsafe-allow-outgoing-with-same-site.https.html`	OK · 8/8 subtests	OK · 8/8 subtests	OK · 8/8 subtests
`historical/popup-same-site-unsafe-allow-outgoing-with-cross-origin.https.html`	OK · 8/8 subtests	OK · 8/8 subtests	OK · 8/8 subtests
`historical/popup-same-site-unsafe-allow-outgoing-with-same-origin.https.html`	OK · 8/8 subtests	OK · 8/8 subtests	OK · 8/8 subtests
`historical/popup-same-site-unsafe-allow-outgoing-with-same-site.https.html`	OK · 8/8 subtests	OK · 8/8 subtests	OK · 8/8 subtests
`historical/popup-same-site-with-cross-origin.https.html`	OK · 8/8 subtests	OK · 8/8 subtests	OK · 8/8 subtests
`historical/popup-same-site-with-same-origin.https.html`	OK · 8/8 subtests	OK · 8/8 subtests	OK · 8/8 subtests
`historical/popup-same-site-with-same-site.https.html`	OK · 8/8 subtests	OK · 8/8 subtests	OK · 8/8 subtests
`iframe-popup-same-origin-allow-popups-to-same-origin-allow-popups.https.html?1-2`	OK · 6/6 subtests	OK · 6/6 subtests	OK · 6/6 subtests
`iframe-popup-same-origin-allow-popups-to-same-origin-allow-popups.https.html?3-4`	OK · 6/6 subtests	OK · 6/6 subtests	OK · 6/6 subtests
`iframe-popup-same-origin-allow-popups-to-same-origin-allow-popups.https.html?5-6`	OK · 6/6 subtests	OK · 6/6 subtests	OK · 6/6 subtests
`iframe-popup-same-origin-allow-popups-to-same-origin-allow-popups.https.html?7-8`	OK · 6/6 subtests	OK · 6/6 subtests	OK · 6/6 subtests
`iframe-popup-same-origin-allow-popups-to-same-origin-allow-popups.https.html?9-last`	OK · 3/3 subtests	OK · 3/3 subtests	OK · 3/3 subtests
`iframe-popup-same-origin-allow-popups-to-same-origin.https.html?1-2`	OK · 6/6 subtests	OK · 6/6 subtests	OK · 6/6 subtests
`iframe-popup-same-origin-allow-popups-to-same-origin.https.html?3-4`	OK · 6/6 subtests	OK · 6/6 subtests	OK · 6/6 subtests
`iframe-popup-same-origin-allow-popups-to-same-origin.https.html?5-6`	OK · 6/6 subtests	OK · 6/6 subtests	OK · 6/6 subtests
`iframe-popup-same-origin-allow-popups-to-same-origin.https.html?7-8`	OK · 6/6 subtests	OK · 6/6 subtests	OK · 6/6 subtests
`iframe-popup-same-origin-allow-popups-to-same-origin.https.html?9-last`	OK · 3/3 subtests	OK · 3/3 subtests	OK · 3/3 subtests
`iframe-popup-same-origin-allow-popups-to-unsafe-none.https.html?1-2`	OK · 6/6 subtests	OK · 6/6 subtests	OK · 6/6 subtests
`iframe-popup-same-origin-allow-popups-to-unsafe-none.https.html?3-4`	OK · 6/6 subtests	OK · 6/6 subtests	OK · 6/6 subtests
`iframe-popup-same-origin-allow-popups-to-unsafe-none.https.html?5-6`	OK · 6/6 subtests	OK · 6/6 subtests	Error · 0/0 subtests
`iframe-popup-same-origin-allow-popups-to-unsafe-none.https.html?7-8`	OK · 6/6 subtests	OK · 6/6 subtests	OK · 6/6 subtests
`iframe-popup-same-origin-allow-popups-to-unsafe-none.https.html?9-last`	OK · 3/3 subtests	OK · 3/3 subtests	OK · 3/3 subtests
`iframe-popup-same-origin-to-same-origin.https.html?1-2`	OK · 6/6 subtests	OK · 6/6 subtests	OK · 6/6 subtests
`iframe-popup-same-origin-to-same-origin.https.html?3-4`	OK · 6/6 subtests	OK · 6/6 subtests	OK · 6/6 subtests
`iframe-popup-same-origin-to-same-origin.https.html?5-6`	OK · 6/6 subtests	OK · 6/6 subtests	OK · 6/6 subtests
`iframe-popup-same-origin-to-same-origin.https.html?7-8`	OK · 6/6 subtests	OK · 6/6 subtests	OK · 6/6 subtests
`iframe-popup-same-origin-to-same-origin.https.html?9-last`	OK · 3/3 subtests	OK · 3/3 subtests	OK · 3/3 subtests
`iframe-popup-same-origin-to-unsafe-none.https.html?1-2`	OK · 6/6 subtests	OK · 6/6 subtests	OK · 6/6 subtests
`iframe-popup-same-origin-to-unsafe-none.https.html?3-4`	OK · 6/6 subtests	OK · 6/6 subtests	OK · 6/6 subtests
`iframe-popup-same-origin-to-unsafe-none.https.html?5-6`	OK · 6/6 subtests	OK · 6/6 subtests	Error · 0/0 subtests
`iframe-popup-same-origin-to-unsafe-none.https.html?7-8`	OK · 6/6 subtests	OK · 6/6 subtests	OK · 6/6 subtests
`iframe-popup-same-origin-to-unsafe-none.https.html?9-last`	OK · 3/3 subtests	OK · 3/3 subtests	OK · 3/3 subtests
`iframe-popup-unsafe-none-to-same-origin.https.html?1-2`	OK · 6/6 subtests	OK · 6/6 subtests	Error · 0/0 subtests
`iframe-popup-unsafe-none-to-same-origin.https.html?3-4`	OK · 6/6 subtests	OK · 6/6 subtests	OK · 6/6 subtests
`iframe-popup-unsafe-none-to-same-origin.https.html?5-6`	OK · 6/6 subtests	OK · 6/6 subtests	OK · 6/6 subtests
`iframe-popup-unsafe-none-to-same-origin.https.html?7-8`	OK · 6/6 subtests	OK · 6/6 subtests	Error · 0/0 subtests
`iframe-popup-unsafe-none-to-same-origin.https.html?9-last`	OK · 3/3 subtests	OK · 3/3 subtests	OK · 3/3 subtests
`iframe-popup-unsafe-none-to-unsafe-none.https.html?1-2`	OK · 6/6 subtests	OK · 6/6 subtests	OK · 6/6 subtests
`iframe-popup-unsafe-none-to-unsafe-none.https.html?3-4`	OK · 6/6 subtests	OK · 6/6 subtests	OK · 6/6 subtests
`iframe-popup-unsafe-none-to-unsafe-none.https.html?5-6`	OK · 6/6 subtests	OK · 6/6 subtests	OK · 6/6 subtests
`iframe-popup-unsafe-none-to-unsafe-none.https.html?7-8`	OK · 6/6 subtests	OK · 6/6 subtests	OK · 6/6 subtests
`iframe-popup-unsafe-none-to-unsafe-none.https.html?9-last`	OK · 3/3 subtests	OK · 3/3 subtests	OK · 3/3 subtests
`javascript-url.https.html?1-2`	OK · 2/2 subtests	OK · 2/2 subtests	OK · 2/2 subtests
`javascript-url.https.html?11-12`	OK · 2/2 subtests	OK · 2/2 subtests	OK · 2/2 subtests
`javascript-url.https.html?13-14`	OK · 2/2 subtests	OK · 2/2 subtests	Error · 0/0 subtests
`javascript-url.https.html?15-16`	OK · 2/2 subtests	OK · 2/2 subtests	OK · 2/2 subtests
`javascript-url.https.html?17-last`	OK · 2/2 subtests	OK · 2/2 subtests	OK · 2/2 subtests
`javascript-url.https.html?3-4`	OK · 2/2 subtests	OK · 2/2 subtests	OK · 2/2 subtests
`javascript-url.https.html?5-6`	OK · 2/2 subtests	OK · 2/2 subtests	OK · 2/2 subtests
`javascript-url.https.html?7-8`	OK · 2/2 subtests	OK · 2/2 subtests	Error · 0/0 subtests
`javascript-url.https.html?9-10`	OK · 2/2 subtests	OK · 2/2 subtests	Error · 0/0 subtests
`navigate-to-aboutblank.https.html`	OK · 4/5 subtests	OK · 5/5 subtests	OK · 5/5 subtests
`navigate-top-to-aboutblank.https.html`	OK · 0/3 subtests	OK · 0/3 subtests	OK · 0/3 subtests
`no-https.html`	OK · 2/2 subtests	OK · 2/2 subtests	OK · 2/2 subtests
`popup-coop-by-sw.https.html?1-4`	Timeout · 0/4 subtests	OK · 4/4 subtests	OK · 4/4 subtests
`popup-coop-by-sw.https.html?5-last`	Timeout · 0/4 subtests	OK · 4/4 subtests	OK · 4/4 subtests
`popup-meta-http-equiv.https.html`	OK · 1/1 subtests	OK · 1/1 subtests	OK · 1/1 subtests
`popup-redirect-cache.https.html?0-1`	OK · 2/2 subtests	OK · 2/2 subtests	OK · 2/2 subtests
`popup-redirect-cache.https.html?2-3`	OK · 2/2 subtests	OK · 2/2 subtests	OK · 2/2 subtests
`popup-redirect-cache.https.html?4-5`	OK · 2/2 subtests	OK · 2/2 subtests	OK · 2/2 subtests
`popup-redirect-cache.https.html?6-7`	OK · 2/2 subtests	OK · 2/2 subtests	OK · 2/2 subtests
`popup-redirect-cache.https.html?8-last`	OK · 1/1 subtests	OK · 1/1 subtests	OK · 1/1 subtests
`popup-redirect-same-origin-allow-popups.https.html`	OK · 0/2 subtests	OK · 2/2 subtests	OK · 2/2 subtests
`popup-same-origin-allow-popups-with-cross-origin.https.html`	OK · 8/8 subtests	OK · 8/8 subtests	OK · 8/8 subtests
`popup-same-origin-allow-popups-with-same-origin.https.html`	OK · 8/8 subtests	OK · 8/8 subtests	OK · 8/8 subtests
`popup-same-origin-allow-popups-with-same-site.https.html`	OK · 8/8 subtests	OK · 8/8 subtests	OK · 8/8 subtests
`popup-same-origin-non-initial-about-blank.https.html`	OK · 1/1 subtests	OK · 1/1 subtests	OK · 1/1 subtests
`popup-same-origin-with-cross-origin.https.html`	OK · 8/8 subtests	OK · 8/8 subtests	OK · 8/8 subtests
`popup-same-origin-with-same-origin.https.html`	OK · 8/8 subtests	OK · 8/8 subtests	OK · 8/8 subtests
`popup-same-origin-with-same-site.https.html`	OK · 8/8 subtests	OK · 8/8 subtests	OK · 8/8 subtests
`popup-unsafe-none-with-cross-origin.https.html`	OK · 8/8 subtests	OK · 8/8 subtests	OK · 8/8 subtests
`popup-unsafe-none-with-same-origin.https.html`	OK · 8/8 subtests	OK · 8/8 subtests	OK · 8/8 subtests
`popup-unsafe-none-with-same-site.https.html`	OK · 8/8 subtests	OK · 8/8 subtests	OK · 8/8 subtests
`popup-unspecified-with-cross-origin.https.html`	OK · 8/8 subtests	OK · 8/8 subtests	OK · 8/8 subtests
`popup-unspecified-with-same-origin.https.html`	OK · 8/8 subtests	OK · 8/8 subtests	OK · 8/8 subtests
`popup-unspecified-with-same-site.https.html`	OK · 8/8 subtests	OK · 8/8 subtests	OK · 8/8 subtests
`popup-with-structured-header.https.html`	OK · 3/3 subtests	OK · 3/3 subtests	OK · 3/3 subtests
`reporting/access-reporting/access-from-coop-page-to-openee_coop-ro_cross-origin.https.html`	OK · 0/2 subtests	OK · 0/2 subtests	OK · 2/2 subtests
`reporting/access-reporting/access-from-coop-page-to-openee_coop-ro.https.html`	OK · 0/2 subtests	OK · 0/2 subtests	OK · 2/2 subtests
`reporting/access-reporting/access-from-coop-page-to-opener_coop-ro_cross-origin.https.html`	OK · 0/2 subtests	OK · 0/2 subtests	OK · 2/2 subtests
`reporting/access-reporting/access-from-coop-page-to-opener_coop-ro.https.html`	OK · 0/2 subtests	OK · 0/2 subtests	OK · 2/2 subtests
`reporting/access-reporting/access-from-coop-page-to-other_coop-ro_cross-origin.https.html`	OK · 0/1 subtests	OK · 0/1 subtests	OK · 1/1 subtests
`reporting/access-reporting/access-from-coop-page-to-other_coop-ro.https.html`	OK · 0/1 subtests	OK · 0/1 subtests	OK · 1/1 subtests
`reporting/access-reporting/access-to-coop-page-from-openee_coop-ro_cross-origin.https.html`	OK · 0/2 subtests	OK · 0/2 subtests	OK · 2/2 subtests
`reporting/access-reporting/access-to-coop-page-from-openee_coop-ro.https.html`	OK · 0/2 subtests	OK · 0/2 subtests	OK · 2/2 subtests
`reporting/access-reporting/access-to-coop-page-from-opener_coop-ro_cross-origin.https.html`	OK · 0/2 subtests	OK · 0/2 subtests	OK · 2/2 subtests
`reporting/access-reporting/access-to-coop-page-from-opener_coop-ro.https.html`	OK · 0/2 subtests	OK · 0/2 subtests	OK · 2/2 subtests
`reporting/access-reporting/access-to-coop-page-from-other_coop-ro_cross-origin.https.html`	OK · 0/1 subtests	OK · 0/1 subtests	OK · 1/1 subtests
`reporting/access-reporting/access-to-coop-page-from-other_coop-ro.https.html`	OK · 0/1 subtests	OK · 0/1 subtests	OK · 1/1 subtests
`reporting/access-reporting/property-blur.https.html`	OK · 0/2 subtests	OK · 0/2 subtests	OK · 2/2 subtests
`reporting/access-reporting/property-close.https.html`	OK · 0/2 subtests	OK · 0/2 subtests	OK · 2/2 subtests
`reporting/access-reporting/property-closed.https.html`	OK · 0/2 subtests	OK · 0/2 subtests	OK · 2/2 subtests
`reporting/access-reporting/property-focus.https.html`	OK · 0/2 subtests	OK · 0/2 subtests	OK · 2/2 subtests
`reporting/access-reporting/property-frames.https.html`	OK · 0/2 subtests	OK · 0/2 subtests	OK · 2/2 subtests
`reporting/access-reporting/property-indexed-getter.https.html`	OK · 4/6 subtests	OK · 4/6 subtests	OK · 6/6 subtests
`reporting/access-reporting/property-length.https.html`	OK · 0/2 subtests	OK · 0/2 subtests	OK · 2/2 subtests
`reporting/access-reporting/property-location-get.https.html`	OK · 0/2 subtests	OK · 0/2 subtests	OK · 2/2 subtests
`reporting/access-reporting/property-location-set.https.html`	OK · 0/2 subtests	OK · 0/2 subtests	OK · 2/2 subtests
`reporting/access-reporting/property-named-getter.https.html`	OK · 5/8 subtests	OK · 5/8 subtests	OK · 8/8 subtests
`reporting/access-reporting/property-opener-get.https.html`	OK · 0/2 subtests	OK · 0/2 subtests	OK · 2/2 subtests
`reporting/access-reporting/property-opener-set.https.html`	OK · 2/2 subtests	OK · 2/2 subtests	OK · 2/2 subtests
`reporting/access-reporting/property-postmessage-1.https.html`	OK · 0/2 subtests	OK · 0/2 subtests	Error · 0/0 subtests
`reporting/access-reporting/property-postmessage-2.https.html`	OK · 0/2 subtests	OK · 0/2 subtests	OK · 2/2 subtests
`reporting/access-reporting/property-self.https.html`	OK · 0/2 subtests	OK · 0/2 subtests	OK · 2/2 subtests
`reporting/access-reporting/property-top.https.html`	OK · 0/2 subtests	OK · 0/2 subtests	OK · 2/2 subtests
`reporting/access-reporting/property-window.https.html`	OK · 0/2 subtests	OK · 0/2 subtests	OK · 2/2 subtests
`reporting/access-reporting/report-to-both_coop-ro.https.html`	OK · 0/2 subtests	OK · 0/2 subtests	OK · 2/2 subtests
`reporting/access-reporting/reporting-observer.html`	Timeout · 0/4 subtests	Timeout · 0/4 subtests	Timeout · 3/4 subtests
`reporting/document-reporting/report-only-four-reports.https.html`	OK · 0/1 subtests	OK · 1/1 subtests	OK · 1/1 subtests
`reporting/document-reporting/report-to-both_coop-ro.https.html`	OK · 0/2 subtests	OK · 0/2 subtests	OK · 2/2 subtests
`reporting/document-reporting/reporting-redirect-with-same-origin-allow-popups.https.html`	OK · 0/2 subtests	OK · 2/2 subtests	OK · 2/2 subtests
`reporting/document-reporting/reporting-redirect-with-unsafe-none.https.html`	OK · 0/2 subtests	OK · 0/2 subtests	OK · 2/2 subtests
`reporting/navigation-reporting/report-only-four-reports.https.html`	OK · 1/2 subtests	OK · 2/2 subtests	OK · 2/2 subtests
`reporting/navigation-reporting/report-only-from-unsafe-none.https.html`	OK · 1/3 subtests	OK · 3/3 subtests	OK · 3/3 subtests
`reporting/navigation-reporting/report-only-same-origin-report-to.https.html`	OK · 2/4 subtests	OK · 4/4 subtests	OK · 4/4 subtests
`reporting/navigation-reporting/report-only-same-origin-with-coep-report-only.https.html`	OK · 2/2 subtests	OK · 2/2 subtests	OK · 2/2 subtests
`reporting/navigation-reporting/report-only-same-origin-with-coep.https.html`	OK · 2/2 subtests	OK · 2/2 subtests	OK · 2/2 subtests
`reporting/navigation-reporting/report-only-same-origin.https.html`	OK · 1/3 subtests	OK · 3/3 subtests	OK · 3/3 subtests
`reporting/navigation-reporting/reporting-coop-navigated-opener.https.html`	OK · 0/1 subtests	OK · 1/1 subtests	OK · 1/1 subtests
`reporting/navigation-reporting/reporting-coop-navigated-popup.https.html`	Timeout · 0/2 subtests	OK · 2/2 subtests	OK · 2/2 subtests
`reporting/navigation-reporting/reporting-popup-report-to-must-be-string.https.html`	Timeout · 0/6 subtests	OK · 6/6 subtests	OK · 6/6 subtests
`reporting/navigation-reporting/reporting-popup-same-origin-allow-popups-report-to.https.html`	Timeout · 0/4 subtests	OK · 4/4 subtests	OK · 4/4 subtests
`reporting/navigation-reporting/reporting-popup-same-origin-coep-report-to.https.html`	Timeout · 1/6 subtests	OK · 6/6 subtests	OK · 6/6 subtests
`reporting/navigation-reporting/reporting-popup-same-origin-report-to.https.html`	Timeout · 1/7 subtests	OK · 7/7 subtests	OK · 7/7 subtests
`reporting/navigation-reporting/reporting-popup-same-origin.https.html`	Timeout · 0/5 subtests	OK · 5/5 subtests	OK · 5/5 subtests
`reporting/navigation-reporting/reporting-popup-unsafe-none-report-to.https.html`	Timeout · 0/4 subtests	OK · 4/4 subtests	OK · 4/4 subtests
`reporting/navigation-reporting/reporting-redirect-with-same-origin-allow-popups.https.html`	OK · 0/2 subtests	OK · 2/2 subtests	OK · 2/2 subtests
`reporting/tentative/access-to-noopener-page-from-no-coop-ro.https.html`	OK · 0/2 subtests	OK · 0/2 subtests	OK · 2/2 subtests
`resource-popup.https.html`	OK · 12/12 subtests	Timeout · 7/12 subtests	OK · 12/12 subtests
`tentative/noopener/coop-noopener-allow-popups-restrict-properties.https.html`	OK · 0/2 subtests	OK · 2/2 subtests	OK · 2/2 subtests

Pinned API query Test source at the run revision

Source-response fingerprint

SHA-256 d116721b6823af4ff8fdaabb5ccb919e7ca9fa51fb11641d0172ca2fe4080a4f

The digest identifies the complete downloaded directory response used for this projection, before file selection. It does not authenticate the runner or prove that the results are truthful.

What this feature can and cannot do

Helps protect against

Cross-window reference attacks
Cross-origin process isolation gaps

Does not guarantee

All cross-origin data exposure
Application authorisation
Isolation without companion resource policies

What you need before using it

Popup and integration compatibility review

Fallback to keep in place

Use defensive opener handling and explicit cross-origin communication checks.