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 / webmessaging / broadcastchannel
Spec: https://html.spec.whatwg.org/multipage/web-messaging.html ↗
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
| Area | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| Total | 100.0%72/72 | 100.0%72/72 | 100.0%72/72 | 86.1%62/72 | 81.9%59/72 | 0.0%0/72 |
| Test | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| basics.any.html | 7/7 | 7/7 | 7/7 | 7/7 | 7/7 | NOT RUN |
| basics.any.worker.html | 7/7 | 7/7 | 7/7 | 7/7 | 7/7 | NOT RUN |
| blobs.html | 2/2 | 2/2 | 2/2 | 2/2 | 2/2 | NOT RUN |
| cross-origin.html | PASS | PASS | PASS | PASS | PASS | NOT RUN |
| cross-partition.https.tentative.html | 5/5 | 5/5 | 5/5 | 0/5 | 0/5 | NOT RUN |
| detached-iframe.html | 6/6 | 6/6 | 6/6 | 2/6 | 6/6 | NOT RUN |
| interface.any.html | 13/13 | 13/13 | 13/13 | 13/13 | 13/13 | NOT RUN |
| interface.any.worker.html | 13/13 | 13/13 | 13/13 | 13/13 | 13/13 | NOT RUN |
| opaque-origin.html | 4/4 | 4/4 | 4/4 | 4/4 | 0/4 | NOT RUN |
| ordering.html | PASS | PASS | PASS | PASS | FAIL | NOT RUN |
| origin.window.html | PASS | PASS | PASS | PASS | PASS | NOT RUN |
| sandbox.html | PASS | PASS | PASS | PASS | PASS | NOT RUN |
| service-worker.https.html | PASS | PASS | PASS | FAIL | FAIL | NOT RUN |
| workers.html | 10/10 | 10/10 | 10/10 | 10/10 | 8/10 | NOT RUN |