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: Web Serial API ↗
Runs: Chrome 155.0.8039.0 (wpt@3f6b09ae3, 2026-09-03) | Firefox 157.0a1 (wpt@3f6b09ae3, 2026-09-03) | Safari 251 preview (wpt@5ce815a83, 2026-08-27) | Ladybird 1.0-795e1 (wpt@7e3d005d7, 2026-09-03) | Servo Servo 0.6 (wpt@09159dcb3, 2026-09-02) | Blitz 188486089 (wpt@a95401e4e, 2026-09-02)
Sort areas: alphabetical | by subtest count
| Area | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| Total | 99.3%140/141 | 95.7%135/141 | 29.8%42/141 | 85.1%120/141 | 29.8%42/141 | 0.0%0/141 |
| getPorts | 100.0%2/2 | 50.0%1/2 | 0.0%0/2 | 0.0%0/2 | 0.0%0/2 | 0.0%0/2 |
| requestPort | 50.0%1/2 | 50.0%1/2 | 0.0%0/2 | 0.0%0/2 | 0.0%0/2 | 0.0%0/2 |
| Test | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| idlharness.https.any.html | 57/57 | 57/57 | 21/57 | 57/57 | 21/57 | NOT RUN |
| idlharness.https.any.worker.html | 56/56 | 56/56 | 21/56 | 56/56 | 21/56 | NOT RUN |
| serial-allowed-by-permissions-policy-attribute-redirect-on-load.https.sub.html | 4/4 | 4/4 | 0/4 | 2/4 | 0/4 | NOT RUN |
| serial-allowed-by-permissions-policy-attribute.https.sub.html | 5/5 | 5/5 | 0/5 | 0/5 | 0/5 | NOT RUN |
| serial-allowed-by-permissions-policy.https.sub.html | 6/6 | 6/6 | 0/6 | 0/6 | 0/6 | NOT RUN |
| serial-default-permissions-policy.https.sub.html | 3/3 | 3/3 | 0/3 | 1/3 | 0/3 | NOT RUN |
| serial-disabled-by-permissions-policy.https.sub.html | 6/6 | 2/6 | 0/6 | 4/6 | 0/6 | NOT RUN |