WPT
This page compares scores on the Web Platform Tests across web engines, using the latest master runs from wpt.fyi and Blitz's own test runner.
wpt / html / canvas / offscreen
Spec: https://html.spec.whatwg.org/multipage/canvas.html#the-offscreencanvas-interface ↗
Runs: Chrome 155.0.8038.0 (wpt@397d01d8e, 2026-09-02) | Firefox 157.0a1 (wpt@397d01d8e, 2026-09-02) | Safari 251 preview (wpt@5ce815a83, 2026-08-27) | Ladybird 1.0-5f6fa (wpt@b1a7025f8, 2026-09-02) | Servo Servo 0.5 (wpt@2ccd2cbf8, 2026-09-01) | Blitz 7727414ca (wpt@a95401e4e, 2026-09-02)
Sort areas: alphabetical | by subtest count
| Area | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| Total | 97.2%2590/2664 | 81.3%2167/2664 | 79.7%2123/2664 | 16.9%450/2664 | 66.9%1782/2664 | 0.0%0/2664 |
| canvas-context | 100.0%30/30 | 100.0%30/30 | 93.3%28/30 | 80.0%24/30 | 93.3%28/30 | 0.0%0/30 |
| canvas-host | 100.0%92/92 | 100.0%92/92 | 100.0%92/92 | 56.5%52/92 | 100.0%92/92 | 0.0%0/92 |
| color-type | 100.0%8/8 | 50.0%4/8 | 50.0%4/8 | 0.0%0/8 | 25.0%2/8 | 0.0%0/8 |
| compositing | 100.0%220/220 | 89.1%196/220 | 88.2%194/220 | 2.7%6/220 | 87.3%192/220 | 0.0%0/220 |
| conformance-requirements | 100.0%4/4 | 100.0%4/4 | 100.0%4/4 | 0.0%0/4 | 100.0%4/4 | 0.0%0/4 |
| drawing-images-to-the-canvas | 100.0%54/54 | 100.0%54/54 | 100.0%54/54 | 11.1%6/54 | 96.3%52/54 | 0.0%0/54 |
| drawing-rectangles-to-the-canvas | 100.0%64/64 | 100.0%64/64 | 100.0%64/64 | 0.0%0/64 | 93.8%60/64 | 0.0%0/64 |
| fill-and-stroke-styles | 99.2%475/479 | 96.0%460/479 | 97.7%468/479 | 11.7%56/479 | 95.4%457/479 | 0.0%0/479 |
| filters | 92.6%50/54 | 7.4%4/54 | 3.7%2/54 | 3.7%2/54 | 3.7%2/54 | 0.0%0/54 |
| layers | 81.2%138/170 | 11.2%19/170 | 8.8%15/170 | 8.8%15/170 | 11.8%20/170 | 0.0%0/170 |
| line-styles | 100.0%66/66 | 100.0%66/66 | 100.0%66/66 | 27.3%18/66 | 97.0%64/66 | 0.0%0/66 |
| manual | 91.6%175/191 | 69.1%132/191 | 59.2%113/191 | 30.9%59/191 | 48.2%92/191 | 0.0%0/191 |
| path-objects | 99.5%408/410 | 98.0%402/410 | 98.5%404/410 | 4.9%20/410 | 70.7%290/410 | 0.0%0/410 |
| pixel-manipulation | 98.3%116/118 | 91.5%108/118 | 93.2%110/118 | 10.2%12/118 | 89.8%106/118 | 0.0%0/118 |
| reset | 100.0%74/74 | 89.2%66/74 | 86.5%64/74 | 2.7%2/74 | 73.0%54/74 | 0.0%0/74 |
| shadows | 100.0%112/112 | 100.0%112/112 | 100.0%112/112 | 16.1%18/112 | 37.5%42/112 | 0.0%0/112 |
| text | 98.2%334/340 | 56.5%192/340 | 46.8%159/340 | 16.5%56/340 | 17.9%61/340 | 0.0%0/340 |
| the-canvas-state | 100.0%112/112 | 100.0%112/112 | 100.0%112/112 | 91.1%102/112 | 100.0%112/112 | 0.0%0/112 |
| transformations | 100.0%44/44 | 100.0%44/44 | 100.0%44/44 | 0.0%0/44 | 100.0%44/44 | 0.0%0/44 |
| wide-gamut-canvas | 50.0%8/16 | 0.0%0/16 | 50.0%8/16 | 0.0%0/16 | 12.5%2/16 | 0.0%0/16 |
| Test | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| 2d.conformance.requirements.basics.html | PASS | PASS | PASS | FAIL | PASS | NOT RUN |
| 2d.conformance.requirements.basics.worker.html | PASS | PASS | PASS | FAIL | PASS | NOT RUN |
| 2d.conformance.requirements.missingargs.html | PASS | PASS | PASS | FAIL | PASS | NOT RUN |
| 2d.conformance.requirements.missingargs.worker.html | PASS | PASS | PASS | FAIL | PASS | NOT RUN |
| OffscreenCanvas-ctx-font-sibling-index-invalid.tentative.html | PASS | PASS | PASS | PASS | PASS | NOT RUN |
| set-proprietary-font-names-001-crash.html | PASS | PASS | PASS | PASS | PASS | NOT RUN |