WPT
wpt / css / mediaqueries / preferences-reducedTransparency.tentative.https.html
Spec: Media Queries ↗
Runs: Chrome 155.0.8042.0 (wpt@5c0dc39b9, 2026-09-04) | Firefox 157.0a1 (wpt@5c0dc39b9, 2026-09-04) | Safari 251 preview (wpt@0588f3896, 2026-09-04) | Ladybird 1.0-b1af2 (wpt@0588f3896, 2026-09-04) | Servo Servo 0.6 (wpt@2c385f65e, 2026-09-04) | Blitz a50cb8971 (wpt@a95401e4e, 2026-09-03)
View on the Blitz WPT dashboard | Open test on wpt.live | wpt.fyi
| Chrome | Firefox | Safari | Ladybird | Servo | Blitz | |
|---|---|---|---|---|---|---|
| Total | 13/13 | 0/13 | 0/13 | 0/13 | 0/13 | 0/13 |
| Subtest | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| navigator.preferences.reducedTransparency supported | PASS | FAIL | FAIL | FAIL | FAIL | FAIL |
| navigator.preferences.reducedTransparency.override supported | PASS | FAIL | FAIL | FAIL | FAIL | FAIL |
| navigator.preferences.reducedTransparency.value supported | PASS | FAIL | FAIL | FAIL | FAIL | FAIL |
| navigator.preferences.reducedTransparency.validValues supported | PASS | FAIL | FAIL | FAIL | FAIL | FAIL |
| navigator.preferences.reducedTransparency.requestOverride() with invalid value throws | PASS | NOTRUN | NOTRUN | NOTRUN | NOTRUN | FAIL |
| navigator.preferences.reducedTransparency.clearOverride() supported | PASS | NOTRUN | NOTRUN | NOTRUN | NOTRUN | FAIL |
| navigator.preferences.reducedTransparency.requestOverride(null) works like clearOverride() | PASS | NOTRUN | NOTRUN | NOTRUN | NOTRUN | FAIL |
| navigator.preferences.reducedTransparency.requestOverride('') works like clearOverride() | PASS | NOTRUN | NOTRUN | NOTRUN | NOTRUN | FAIL |
| navigator.preferences.reducedTransparency.requestOverride() updates (prefers-reduced-transparency) | PASS | NOTRUN | NOTRUN | NOTRUN | NOTRUN | FAIL |
| navigator.preferences.reducedTransparency fires change event when requesting override | PASS | FAIL | FAIL | FAIL | FAIL | FAIL |
| navigator.preferences.reducedTransparency fires change event when requesting override (without value change) | PASS | NOTRUN | NOTRUN | NOTRUN | NOTRUN | FAIL |
| navigator.preferences.reducedTransparency fires change event when clearing override | PASS | NOTRUN | NOTRUN | NOTRUN | NOTRUN | FAIL |
| navigator.preferences.reducedTransparency fires change event when clearing override (without value change) | PASS | NOTRUN | NOTRUN | NOTRUN | NOTRUN | FAIL |