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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 / webvtt / api / VTTRegion

Spec: WebVTT: The Web Video Text Tracks Format ↗

Runs: Chrome 155.0.8042.0 (wpt@4eb09bcd9, 2026-09-04) | Firefox 157.0a1 (wpt@c3fcbf4ba, 2026-09-04) | Safari 251 preview (wpt@e7122b73f, 2026-09-04) | Ladybird 1.0-52f0f (wpt@a1ecd0c09, 2026-09-04) | Servo Servo 0.6 (wpt@2c385f65e, 2026-09-04) | Blitz a50cb8971 (wpt@a95401e4e, 2026-09-03)

Sort areas: alphabetical | by subtest count

AreaChromeFirefoxSafariLadybirdServoBlitz
Total100.0%11/1190.9%10/11100.0%11/1190.9%10/1190.9%10/110.0%0/11
TestChromeFirefoxSafariLadybirdServoBlitz
constructor.html2/22/22/22/22/2NOT RUN
id.htmlPASSPASSPASSPASSPASSNOT RUN
lines.htmlPASSFAILPASSPASSPASSNOT RUN
non-visible-cue-with-region.htmlPASSPASSPASSFAILFAILNOT RUN
regionAnchorX.htmlPASSPASSPASSPASSPASSNOT RUN
regionAnchorY.htmlPASSPASSPASSPASSPASSNOT RUN
scroll.htmlPASSPASSPASSPASSPASSNOT RUN
viewportAnchorX.htmlPASSPASSPASSPASSPASSNOT RUN
viewportAnchorY.htmlPASSPASSPASSPASSPASSNOT RUN
width.htmlPASSPASSPASSPASSPASSNOT RUN