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WPT

wpt / css / mediaqueries / preferences-reducedMotion.tentative.https.html

Spec: Media Queries ↗

Runs: Chrome 155.0.8039.0 (wpt@d0c38285b, 2026-09-03) | Firefox 157.0a1 (wpt@ed1909ed6, 2026-09-03) | Safari 251 preview (wpt@5ce815a83, 2026-08-27) | Ladybird 1.0-56c61 (wpt@cc4d45aa0, 2026-09-03) | Servo Servo 0.6 (wpt@09159dcb3, 2026-09-02) | Blitz 188486089 (wpt@a95401e4e, 2026-09-02)

View on the Blitz WPT dashboard | Open test on wpt.live | wpt.fyi

ChromeFirefoxSafariLadybirdServoBlitz
Total13/130/130/130/130/130/13
SubtestChromeFirefoxSafariLadybirdServoBlitz
navigator.preferences.reducedMotion supportedPASSFAILFAILFAILFAILFAIL
navigator.preferences.reducedMotion.override supportedPASSFAILFAILFAILFAILFAIL
navigator.preferences.reducedMotion.value supportedPASSFAILFAILFAILFAILFAIL
navigator.preferences.reducedMotion.validValues supportedPASSFAILFAILFAILFAILFAIL
navigator.preferences.reducedMotion.requestOverride() with invalid value throwsPASSNOTRUNNOTRUNNOTRUNNOTRUNFAIL
navigator.preferences.reducedMotion.clearOverride() supportedPASSNOTRUNNOTRUNNOTRUNNOTRUNFAIL
navigator.preferences.reducedMotion.requestOverride(null) works like clearOverride()PASSNOTRUNNOTRUNNOTRUNNOTRUNFAIL
navigator.preferences.reducedMotion.requestOverride('') works like clearOverride()PASSNOTRUNNOTRUNNOTRUNNOTRUNFAIL
navigator.preferences.reducedMotion.requestOverride() updates (prefers-reduced-motion)PASSNOTRUNNOTRUNNOTRUNNOTRUNFAIL
navigator.preferences.reducedMotion fires change event when requesting overridePASSFAILFAILFAILFAILFAIL
navigator.preferences.reducedMotion fires change event when requesting override (without value change)PASSNOTRUNNOTRUNNOTRUNNOTRUNFAIL
navigator.preferences.reducedMotion fires change event when clearing overridePASSNOTRUNNOTRUNNOTRUNNOTRUNFAIL
navigator.preferences.reducedMotion fires change event when clearing override (without value change)PASSNOTRUNNOTRUNNOTRUNNOTRUNFAIL