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Status

This page documents the implementation status of various HTML and CSS features in Blitz.

CSS PropertiesHTML ElementsEventsWPT TestsWPT History

This page documents Blitz's scores on the "css" subsuite of the Web Platform Tests.

wpt / css / css-paint-api

Score history
1 month3 months6 months1 year2 years4 yearsAll time
0%20%40%60%80%100%May 2025Jul 2025Sep 2025Nov 2025Jan 2026Mar 2026May 2026Jul 2026Sep 2026css/css-paint-api

Data from commit:
ab0e30b Give form controls a UA default font-family (#940) (2026-09-25)

AreaInterop ScoreTestsTest %SubtestsSubtest %
Total81.31%(95/118)80.51%(114/144)79.17%
parsing0.00%(0/1)0.00%(0/8)0.00%
hidpi100.00%(3/3)100.00%(3/3)100.00%
TestSubtestsSubtest %Status
background-image-alpha.https.html(1/1)100.00%PASS
background-image-multiple.https.html(1/1)100.00%PASS
background-image-tiled.https.html(1/1)100.00%PASS
background-repeat-x.https.html(1/1)100.00%PASS
color-custom-property-animation.https.html(1/1)100.00%PASS
column-count-crash.https.html(1/1)100.00%PASS
dynamic-import.https.html(1/1)100.00%PASS
geometry-background-image-001.https.html(1/1)100.00%PASS
geometry-background-image-002.https.html(1/1)100.00%PASS
geometry-background-image-tiled-001.https.html(1/1)100.00%PASS
geometry-background-image-tiled-002.https.html(1/1)100.00%PASS
geometry-background-image-tiled-003.https.html(1/1)100.00%PASS
geometry-border-image-001.https.html(0/1)0.00%FAIL
geometry-border-image-002.https.html(1/1)100.00%PASS
geometry-border-image-003.https.html(1/1)100.00%PASS
geometry-border-image-004.https.html(0/1)0.00%FAIL
geometry-border-image-005.https.html(0/1)0.00%FAIL
geometry-with-float-size.https.html(1/1)100.00%PASS
idlharness.html(19/20)95.00%FAIL
invalid-image-constructor-error.https.html(1/1)100.00%PASS
invalid-image-paint-error.https.html(1/1)100.00%PASS
invalid-image-pending-script.https.html(1/1)100.00%PASS
no-op-animation.https.html(1/1)100.00%PASS
non-registered-property-value.https.html(1/1)100.00%PASS
one-custom-property-animation-half-opaque.https.html(1/1)100.00%PASS
one-custom-property-animation.https.html(0/1)0.00%FAIL
overdraw.https.html(0/1)0.00%FAIL
paint-arguments.https.html(1/1)100.00%PASS
paint-function-arguments-var.https.html(1/1)100.00%PASS
paint-function-arguments.https.html(1/1)100.00%PASS
paint-function-this-value.https.html(1/1)100.00%PASS
paint2d-canvasFilter.tentative.https.html(1/1)100.00%PASS
paint2d-composite.https.html(1/1)100.00%PASS
paint2d-conicGradient.https.html(1/1)100.00%PASS
paint2d-filter.https.html(1/1)100.00%PASS
paint2d-gradient.https.html(1/1)100.00%PASS
paint2d-image.https.html(0/1)0.00%FAIL
paint2d-imageSmoothingQuality.high.https.html(1/1)100.00%PASS
paint2d-imageSmoothingQuality.low.https.html(1/1)100.00%PASS
paint2d-imageSmoothingQuality.med.https.html(1/1)100.00%PASS
paint2d-paths.https.html(1/1)100.00%PASS
paint2d-rects.https.html(1/1)100.00%PASS
paint2d-reset.https.html(1/1)100.00%PASS
paint2d-roundRect.https.html(1/1)100.00%PASS
paint2d-shadows.https.html(1/1)100.00%PASS
paint2d-transform.https.html(1/1)100.00%PASS
parse-input-arguments-001.https.html(1/1)100.00%PASS
parse-input-arguments-002.https.html(1/1)100.00%PASS
parse-input-arguments-003.https.html(1/1)100.00%PASS
parse-input-arguments-004.https.html(1/1)100.00%PASS
parse-input-arguments-005.https.html(1/1)100.00%PASS
parse-input-arguments-006.https.html(1/1)100.00%PASS
parse-input-arguments-007.https.html(1/1)100.00%PASS
parse-input-arguments-008.https.html(1/1)100.00%PASS
parse-input-arguments-009.https.html(1/1)100.00%PASS
parse-input-arguments-010.https.html(1/1)100.00%PASS
parse-input-arguments-011.https.html(1/1)100.00%PASS
parse-input-arguments-012.https.html(1/1)100.00%PASS
parse-input-arguments-013.https.html(1/1)100.00%PASS
parse-input-arguments-014.https.html(1/1)100.00%PASS
parse-input-arguments-015.https.html(1/1)100.00%PASS
parse-input-arguments-016.https.html(1/1)100.00%PASS
parse-input-arguments-017.https.html(1/1)100.00%PASS
parse-input-arguments-018.https.html(1/1)100.00%PASS
parse-input-arguments-019.https.html(1/1)100.00%PASS
parse-input-arguments-020.https.html(1/1)100.00%PASS
parse-input-arguments-021.https.html(1/1)100.00%PASS
parse-input-arguments-022.https.html(1/1)100.00%PASS
registered-property-interpolation-001.https.html(0/1)0.00%FAIL
registered-property-interpolation-002.https.html(0/1)0.00%FAIL
registered-property-interpolation-003.https.html(0/1)0.00%FAIL
registered-property-interpolation-004.https.html(0/1)0.00%FAIL
registered-property-interpolation-005.https.html(0/1)0.00%FAIL
registered-property-interpolation-006.https.html(0/1)0.00%FAIL
registered-property-interpolation-007.https.html(0/1)0.00%FAIL
registered-property-interpolation-008.https.html(0/1)0.00%FAIL
registered-property-interpolation-009.https.html(0/1)0.00%FAIL
registered-property-interpolation-010.https.html(0/1)0.00%FAIL
registered-property-invalidation-001.https.html(1/1)100.00%PASS
registered-property-invalidation-002.https.html(1/1)100.00%PASS
registered-property-stylemap.https.html(1/1)100.00%PASS
registered-property-utf8-animation.https.html(0/1)0.00%FAIL
registered-property-value-001.https.html(1/1)100.00%PASS
registered-property-value-002.https.html(1/1)100.00%PASS
registered-property-value-003.https.html(1/1)100.00%PASS
registered-property-value-004.https.html(1/1)100.00%PASS
registered-property-value-005.https.html(1/1)100.00%PASS
registered-property-value-006.https.html(1/1)100.00%PASS
registered-property-value-007.https.html(1/1)100.00%PASS
registered-property-value-008.https.html(1/1)100.00%PASS
registered-property-value-009.https.html(1/1)100.00%PASS
registered-property-value-010.https.html(1/1)100.00%PASS
registered-property-value-011.https.html(1/1)100.00%PASS
registered-property-value-012.https.html(1/1)100.00%PASS
registered-property-value-013.https.html(1/1)100.00%PASS
registered-property-value-014.https.html(1/1)100.00%PASS
registered-property-value-015.https.html(1/1)100.00%PASS
registered-property-value-016.https.html(1/1)100.00%PASS
registered-property-value-017.https.html(1/1)100.00%PASS
registered-property-value-018.https.html(1/1)100.00%PASS
roundrect.https.html(1/1)100.00%PASS
setTransform-001.https.html(1/1)100.00%PASS
setTransform-002.https.html(1/1)100.00%PASS
setTransform-003.https.html(1/1)100.00%PASS
setTransform-004.https.html(1/1)100.00%PASS
style-background-image.https.html(1/1)100.00%PASS
style-before-pseudo.https.html(1/1)100.00%PASS
style-first-letter-pseudo.https.html(0/1)0.00%FAIL
top-level-await.https.html(1/1)100.00%PASS
two-custom-property-animation.https.html(0/1)0.00%FAIL
two-element-custom-property-animation.https.html(1/1)100.00%PASS
two-element-one-custom-property-animation.https.html(1/1)100.00%PASS
valid-image-after-load.https.html(0/1)0.00%FAIL
valid-image-before-load.https.html(0/1)0.00%FAIL