Status
This page documents the implementation status of various HTML and CSS features in Blitz.
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:
1093b86 wpt: skip non-UTF-8 test files instead of crashing (#659) (2026-08-09)
wpt / css / css-highlight-api
| Area | Interop Score | Tests | Test % | Subtests | Subtest % |
|---|---|---|---|---|---|
| Total | 13.20% | (13/98) | 13.27% | (13/98) | 13.27% |
| painting | 14.60% | (13/89) | 14.61% | (13/89) | 14.61% |
| Test | Subtests | Subtest % | Status |
|---|---|---|---|
| highlight-fallback-not-tinted.html | (0/1) | 0.00% | FAIL |
| highlight-image-currentcolor.html | (0/1) | 0.00% | FAIL |
| highlight-image-stacked.html | (0/1) | 0.00% | FAIL |
| highlight-priority-painting.html | (0/1) | 0.00% | FAIL |
| highlight-text-across-elements.html | (0/1) | 0.00% | FAIL |
| highlight-text-cascade.html | (0/1) | 0.00% | FAIL |
| highlight-text-decorations.html | (0/1) | 0.00% | FAIL |
| highlight-text-replace.html | (0/1) | 0.00% | FAIL |
| highlight-text.html | (0/1) | 0.00% | FAIL |