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.
Spec: https://tc39.es/ecma262/ ↗
Runs: Chrome 155.0.8040.0 (wpt@105b6a3a5, 2026-09-03) | Firefox 157.0a1 (wpt@e6996908b, 2026-09-03) | Safari 251 preview (wpt@5ce815a83, 2026-08-27) | Ladybird 1.0-f436a (wpt@476394464, 2026-09-03) | Servo Servo 0.6 (wpt@7e3d005d7, 2026-09-03) | Blitz a50cb8971 (wpt@a95401e4e, 2026-09-03)
Sort areas: alphabetical | by subtest count
| Area | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| Total | 76.9%110/143 | 76.2%109/143 | 76.2%109/143 | 74.8%107/143 | 75.5%108/143 | 0.0%0/143 |
| weakrefs | 8.3%3/36 | 5.6%2/36 | 8.3%3/36 | 2.8%1/36 | 2.8%1/36 | 0.0%0/36 |
| Test | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| Array.DefineOwnProperty.html | PASS | PASS | PASS | PASS | PASS | NOT RUN |
| Array.prototype.join-order.html | 51/51 | 51/51 | 51/51 | 51/51 | 51/51 | NOT RUN |
| Math.max.html | 6/6 | 6/6 | 6/6 | 6/6 | 6/6 | NOT RUN |
| Math.min.html | 6/6 | 6/6 | 6/6 | 6/6 | 6/6 | NOT RUN |
| Object.prototype.freeze.html | PASS | PASS | PASS | PASS | PASS | NOT RUN |
| Object.prototype.getOwnPropertyNames.html | 4/4 | 4/4 | 4/4 | 4/4 | 4/4 | NOT RUN |
| Object.prototype.hasOwnProperty-order.html | 4/4 | 4/4 | 4/4 | 4/4 | 4/4 | NOT RUN |
| Object.prototype.hasOwnProperty-prototype-chain.html | 3/3 | 3/3 | 3/3 | 3/3 | 3/3 | NOT RUN |
| Object.prototype.preventExtensions.html | PASS | PASS | PASS | PASS | PASS | NOT RUN |
| Object.prototype.seal.html | PASS | PASS | PASS | PASS | PASS | NOT RUN |
| Promise-incumbent-global.sub.html | PASS | PASS | FAIL | TIMEOUT | PASS | NOT RUN |
| Promise-subclassing.html | 8/8 | 8/8 | 8/8 | 8/8 | 8/8 | NOT RUN |
| WeakMap.prototype-properties.html | 20/20 | 20/20 | 20/20 | 20/20 | 20/20 | NOT RUN |