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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 / longtask-timing

Spec: Long Tasks API ↗

Runs: Chrome 155.0.8039.0 (wpt@3f6b09ae3, 2026-09-03) | Firefox 157.0a1 (wpt@3f6b09ae3, 2026-09-03) | Safari 251 preview (wpt@5ce815a83, 2026-08-27) | Ladybird 1.0-795e1 (wpt@7e3d005d7, 2026-09-03) | Servo Servo 0.6 (wpt@09159dcb3, 2026-09-02) | Blitz 188486089 (wpt@a95401e4e, 2026-09-02)

Sort areas: alphabetical | by subtest count

AreaChromeFirefoxSafariLadybirdServoBlitz
Total87.0%67/771.3%1/771.3%1/771.3%1/771.3%1/770.0%0/77
shared-renderer100.0%1/10.0%0/10.0%0/10.0%0/10.0%0/10.0%0/1
TestChromeFirefoxSafariLadybirdServoBlitz
buffered-flag.window.htmlPASSFAILFAILFAILFAILNOT RUN
containerNames.htmlPASSFAILFAILFAILFAILNOT RUN
containerTypes.html4/40/40/40/40/4NOT RUN
idlharness.window.html42/501/501/501/501/50NOT RUN
long-microtask.window.htmlPASSFAILFAILFAILFAILNOT RUN
longtask-attributes.htmlPASSFAILFAILFAILFAILNOT RUN
longtask-before-observer.window.htmlPASSFAILFAILFAILFAILNOT RUN
longtask-detach-frame.htmlPASSFAILFAILFAILFAILNOT RUN
longtask-in-childiframe-crossorigin.htmlTIMEOUTFAILFAILFAILFAILNOT RUN
longtask-in-childiframe.htmlPASSFAILFAILFAILFAILNOT RUN
longtask-in-externalscript.htmlPASSFAILFAILFAILFAILNOT RUN
longtask-in-parentiframe.htmlPASSFAILFAILFAILFAILNOT RUN
longtask-in-raf.htmlPASSFAILFAILFAILFAILNOT RUN
longtask-in-sibling-iframe-crossorigin.htmlTIMEOUTFAILFAILFAILFAILNOT RUN
longtask-in-sibling-iframe.htmlPASSFAILFAILFAILFAILNOT RUN
longtask-promise.html4/40/40/40/40/4NOT RUN
longtask-sync-xhr.htmlPASSERRORERRORERRORERRORNOT RUN
longtask-tojson.htmlPASSFAILFAILFAILFAILNOT RUN
spin-eventloop-not-longtask.htmlPASSERRORERRORERRORERRORNOT RUN
supported-longtask-types.window.html2/20/20/20/20/2NOT RUN