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Status

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

CSS PropertiesHTML ElementsEventsWPT Tests

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

Note: As it does not have a JavaScript engine, Blitz can only run about 20% of the total subtests. In the numbers below, tests that Blitz can't run are ignored and percentages are relative to the number of tests run.

Data from commit:
708eb61 WPT runner: support mismatch reftests and multiple rel=match links (#665) (2026-08-09)

wpt / css / css-images / gradient

AreaInterop ScoreTestsTest %SubtestsSubtest %
Total52.60%(40/76)52.63%(40/76)52.63%
TestSubtestsSubtest %Status
color-scheme-dependent-color-stops.html(1/1)100.00%PASS
conic-gradient-001.html(1/1)100.00%PASS
css-color-4-colors-default-to-oklab-gradient.html(0/1)0.00%FAIL
display-p3-linear-gradient.html(0/1)0.00%FAIL
gradient-analogous-missing-components-001.html(1/1)100.00%PASS
gradient-analogous-missing-components-002.html(1/1)100.00%PASS
gradient-analogous-missing-components-003.html(1/1)100.00%PASS
gradient-analogous-missing-components-004.html(1/1)100.00%PASS
gradient-decreasing-hue-hsl.html(0/1)0.00%FAIL
gradient-decreasing-hue-lch.html(0/1)0.00%FAIL
gradient-eval-001.html(0/1)0.00%FAIL
gradient-eval-002.html(0/1)0.00%FAIL
gradient-eval-003.html(0/1)0.00%FAIL
gradient-eval-004.html(0/1)0.00%FAIL
gradient-eval-005.html(0/1)0.00%FAIL
gradient-eval-006.html(0/1)0.00%FAIL
gradient-eval-007.html(0/1)0.00%FAIL
gradient-eval-008.html(0/1)0.00%FAIL
gradient-eval-009.html(0/1)0.00%FAIL
gradient-eval-predefined-color-spaces.html(1/1)100.00%PASS
gradient-hue-direction.html(1/1)100.00%PASS
gradient-increasing-hue-hsl.html(0/1)0.00%FAIL
gradient-increasing-hue-lch.html(0/1)0.00%FAIL
gradient-infinity-001.html(1/1)100.00%PASS
gradient-infinity-002.html(1/1)100.00%PASS
gradient-infinity-003.html(1/1)100.00%PASS
gradient-longer-hue-hsl-001.html(0/1)0.00%FAIL
gradient-longer-hue-hsl-002.html(0/1)0.00%FAIL
gradient-longer-hue-hsl-003.html(0/1)0.00%FAIL
gradient-longer-hue-hsl-004.html(1/1)100.00%PASS
gradient-longer-hue-hsl-005.html(1/1)100.00%PASS
gradient-longer-hue-hsl-006.html(0/1)0.00%FAIL
gradient-longer-hue-hsl-007.html(1/1)100.00%PASS
gradient-longer-hue-hsl-008.html(0/1)0.00%FAIL
gradient-longer-hue-hsl-009.html(1/1)100.00%PASS
gradient-longer-hue-hsl-010.html(1/1)100.00%PASS
gradient-longer-hue-hsl-011.html(1/1)100.00%PASS
gradient-longer-hue-hsl-012.html(1/1)100.00%PASS
gradient-longer-hue-hsl-013.html(1/1)100.00%PASS
gradient-longer-hue-lch-001.html(0/1)0.00%FAIL
gradient-longer-hue-lch-002.html(0/1)0.00%FAIL
gradient-longer-hue-lch-003.html(0/1)0.00%FAIL
gradient-longer-hue-lch-004.html(1/1)100.00%PASS
gradient-longer-hue-lch-005.html(1/1)100.00%PASS
gradient-longer-hue-lch-006.html(0/1)0.00%FAIL
gradient-longer-hue-lch-007.html(1/1)100.00%PASS
gradient-longer-hue-lch-008.html(0/1)0.00%FAIL
gradient-longer-hue-lch-009.html(1/1)100.00%PASS
gradient-longer-hue-lch-010.html(1/1)100.00%PASS
gradient-longer-hue-lch-011.html(1/1)100.00%PASS
gradient-longer-hue-lch-012.html(1/1)100.00%PASS
gradient-none-interpolation.html(0/1)0.00%FAIL
gradient-powerless-hue-hsl.html(0/1)0.00%FAIL
gradient-powerless-hue-hwb.html(0/1)0.00%FAIL
gradient-powerless-hue-lch.html(0/1)0.00%FAIL
gradient-powerless-hue-oklch.html(0/1)0.00%FAIL
gradient-single-stop-001.html(1/1)100.00%PASS
gradient-single-stop-002.html(1/1)100.00%PASS
gradient-single-stop-003.html(1/1)100.00%PASS
gradient-single-stop-004.html(1/1)100.00%PASS
gradient-single-stop-005.html(1/1)100.00%PASS
gradient-single-stop-006.html(1/1)100.00%PASS
gradient-single-stop-007.html(1/1)100.00%PASS
gradient-single-stop-008.html(1/1)100.00%PASS
gradient-single-stop-longer-hue-hsl-002.html(1/1)100.00%PASS
gradient-single-stop-longer-hue-hsl.html(1/1)100.00%PASS
gradient-single-stop-longer-hue-oklch.html(1/1)100.00%PASS
gradient-single-stop-none-interpolation.html(1/1)100.00%PASS
gradient-to-transparent.html(0/1)0.00%FAIL
legacy-color-gradient.html(0/1)0.00%FAIL
linear-gradient-relative-currentcolor-stop.html(1/1)100.00%PASS
oklab-gradient.html(0/1)0.00%FAIL
repeating-gradient-hsl-and-oklch.html(1/1)100.00%PASS
srgb-gradient.html(0/1)0.00%FAIL
srgb-linear-gradient.html(0/1)0.00%FAIL
xyz-gradient.html(0/1)0.00%FAIL