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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 / extensibility / foreignObject

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

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

AreaInterop ScoreTestsTest %SubtestsSubtest %
Total34.30%(8/24)33.33%(9/27)33.33%
TestSubtestsSubtest %Status
composited-inside-object.html(1/1)100.00%PASS
compositing-backface-visibility.html(1/1)100.00%PASS
containing-block.html(0/1)0.00%FAIL
filter-repaint.html(1/1)100.00%PASS
foreign-object-circular-filter-reference-crash.html(1/1)100.00%PASS
foreign-object-containing-svg-in-svg-in-object.html(0/1)0.00%FAIL
foreign-object-margin-collapsing.html(0/1)0.00%FAIL
foreign-object-paints-before-rect.html(0/1)0.00%FAIL
foreign-object-scale-scroll.html(1/1)100.00%PASS
foreign-object-size.html(0/1)0.00%FAIL
foreign-object-under-clip-path-crash.html(1/1)100.00%PASS
foreign-object-under-defs-crash.html(1/1)100.00%PASS
foreign-object-with-position-under-clip-path.html(0/1)0.00%FAIL
getboundingclientrect.html(0/1)0.00%FAIL
isolation-with-html.html(0/1)0.00%FAIL
isolation-with-svg.html(0/1)0.00%FAIL
masked.html(0/1)0.00%FAIL
overlapped-positioned-and-will-change-transform-descendant.html(0/1)0.00%FAIL
position-svg-root-in-foreign-object.html(0/1)0.00%FAIL
properties.svg(1/4)25.00%FAIL
scroll-transform-nested-stacked-children.html(0/1)0.00%FAIL
stacking-context.html(0/1)0.00%FAIL
will-change-in-foreign-object-paint-order.html(1/1)100.00%PASS
will-change-in-transformed-foreign-object.html(0/1)0.00%FAIL