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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.

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.

wpt / svg / painting / reftests

Score history
1 month3 months6 months1 yearAll time
0%20%40%60%80%100%svg/painting/reftests

Data from commit:
a50cb89 wpt: run reference-named files which are themselves tests (#836) (2026-09-03)

AreaInterop ScoreTestsTest %SubtestsSubtest %
Total44.40%(24/54)44.44%(24/54)44.44%
TestSubtestsSubtest %Status
display-none-mask.html(1/1)100.00%PASS
fallback-001.svg(1/1)100.00%PASS
fallback-002.svg(1/1)100.00%PASS
gradient-external-reference.svg(0/1)0.00%FAIL
large-transform-001.html(1/1)100.00%PASS
marker-context-fill-transform.html(0/1)0.00%FAIL
marker-external-reference.svg(0/1)0.00%FAIL
marker-implicit-subpaths.html(0/1)0.00%FAIL
marker-path-001.svg(1/1)100.00%PASS
marker-path-002.svg(1/1)100.00%PASS
marker-path-003.svg(0/1)0.00%FAIL
marker-path-011.svg(1/1)100.00%PASS
marker-path-012.svg(0/1)0.00%FAIL
marker-path-013.svg(0/1)0.00%FAIL
marker-path-021.svg(0/1)0.00%FAIL
marker-path-022.svg(0/1)0.00%FAIL
marker-path-023.svg(0/1)0.00%FAIL
marker-units-strokewidth-non-scaling-stroke.svg(0/1)0.00%FAIL
marker-units-userspaceonuse-non-scaling-stroke.svg(1/1)100.00%PASS
markers-orient-001.svg(1/1)100.00%PASS
markers-orient-002.svg(0/1)0.00%FAIL
mask-percentage.html(1/1)100.00%PASS
mask-print.svg(0/1)0.00%FAIL
non-scaling-stroke-001.html(0/1)0.00%FAIL
non-scaling-stroke-002.html(0/1)0.00%FAIL
non-scaling-stroke-003.html(0/1)0.00%FAIL
non-scaling-stroke-004.html(0/1)0.00%FAIL
non-scaling-stroke-005.html(0/1)0.00%FAIL
non-scaling-stroke-006.html(0/1)0.00%FAIL
non-scaling-stroke-007.html(0/1)0.00%FAIL
non-scaling-stroke-non-uniform-scale.html(0/1)0.00%FAIL
non-scaling-stroke-precision-loss.html(1/1)100.00%PASS
non-scaling-stroke-with-none-preserve-aspect-ratio.html(0/1)0.00%FAIL
paint-context-001.svg(1/1)100.00%PASS
paint-context-002.svg(1/1)100.00%PASS
paint-context-003.svg(0/1)0.00%FAIL
paint-context-004.svg(1/1)100.00%PASS
paint-context-005.svg(1/1)100.00%PASS
paint-context-006.svg(1/1)100.00%PASS
paint-context-007.svg(1/1)100.00%PASS
paint-context-008.svg(0/1)0.00%FAIL
paint-order-001.svg(1/1)100.00%PASS
paint-order-002.svg(1/1)100.00%PASS
paint-order-003.svg(1/1)100.00%PASS
paint-order-text-decorations.svg(1/1)100.00%PASS
pattern-external-reference.svg(0/1)0.00%FAIL
percentage-attribute.svg(1/1)100.00%PASS
percentage.svg(1/1)100.00%PASS
small-nested-viewbox.html(1/1)100.00%PASS
symbol-in-mask.html(0/1)0.00%FAIL
text-shadow-01.html(0/1)0.00%FAIL
text-shadow-02.html(0/1)0.00%FAIL
text-shadow-03.html(0/1)0.00%FAIL
zero-scale-svg-transform-inside-g-tag.html(0/1)0.00%FAIL