WPT
wpt / fetch / api / headers / headers-no-cors.any.worker.html
Spec: Fetch ↗
Runs: Chrome 155.0.8038.0 (wpt@7addae031, 2026-09-02) | Firefox 157.0a1 (wpt@7addae031, 2026-09-02) | Safari 251 preview (wpt@5ce815a83, 2026-08-27) | Ladybird 1.0-a7884 (wpt@b1a7025f8, 2026-09-02) | Servo Servo 0.6 (wpt@09159dcb3, 2026-09-02) | Blitz 188486089 (wpt@a95401e4e, 2026-09-02)
View on the Blitz WPT dashboard | Open test on wpt.live | wpt.fyi
| Chrome | Firefox | Safari | Ladybird | Servo | Blitz | |
|---|---|---|---|---|---|---|
| Total | 27/27 | 27/27 | 27/27 | 27/27 | 26/27 | NOT RUN |
| Subtest | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| Loading data… | PASS | PASS | PASS | PASS | PASS | — |
| "no-cors" Headers object cannot have accept set to sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss, , sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss | PASS | PASS | PASS | PASS | PASS | — |
| "no-cors" Headers object cannot have accept-language set to sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss, , sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss | PASS | PASS | PASS | PASS | PASS | — |
| "no-cors" Headers object cannot have content-language set to sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss, , sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss | PASS | PASS | PASS | PASS | PASS | — |
| "no-cors" Headers object cannot have accept set to , sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss | PASS | PASS | PASS | PASS | PASS | — |
| "no-cors" Headers object cannot have accept-language set to , sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss | PASS | PASS | PASS | PASS | PASS | — |
| "no-cors" Headers object cannot have content-language set to , sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss | PASS | PASS | PASS | PASS | PASS | — |
| "no-cors" Headers object cannot have content-type set to text/plain;ssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss, text/plain | PASS | PASS | PASS | PASS | FAIL | — |
| "no-cors" Headers object cannot have accept/" as header | PASS | PASS | PASS | PASS | PASS | — |
| "no-cors" Headers object cannot have accept/012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678 as header | PASS | PASS | PASS | PASS | PASS | — |
| "no-cors" Headers object cannot have accept-language/ as header | PASS | PASS | PASS | PASS | PASS | — |
| "no-cors" Headers object cannot have accept-language/@ as header | PASS | PASS | PASS | PASS | PASS | — |
| "no-cors" Headers object cannot have authorization/basics as header | PASS | PASS | PASS | PASS | PASS | — |
| "no-cors" Headers object cannot have content-language/ as header | PASS | PASS | PASS | PASS | PASS | — |
| "no-cors" Headers object cannot have content-language/@ as header | PASS | PASS | PASS | PASS | PASS | — |
| "no-cors" Headers object cannot have content-type/text/html as header | PASS | PASS | PASS | PASS | PASS | — |
| "no-cors" Headers object cannot have content-type/text/plain; long=0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901 as header | PASS | PASS | PASS | PASS | PASS | — |
| "no-cors" Headers object cannot have range/bytes 0- as header | PASS | PASS | PASS | PASS | PASS | — |
| "no-cors" Headers object cannot have test/hi as header | PASS | PASS | PASS | PASS | PASS | — |
| "no-cors" Headers object cannot have dpr/2 as header | PASS | PASS | PASS | PASS | PASS | — |
| "no-cors" Headers object cannot have rtt/1.0 as header | PASS | PASS | PASS | PASS | PASS | — |
| "no-cors" Headers object cannot have downlink/-1.0 as header | PASS | PASS | PASS | PASS | PASS | — |
| "no-cors" Headers object cannot have ect/6g as header | PASS | PASS | PASS | PASS | PASS | — |
| "no-cors" Headers object cannot have save-data/on as header | PASS | PASS | PASS | PASS | PASS | — |
| "no-cors" Headers object cannot have viewport-width/100 as header | PASS | PASS | PASS | PASS | PASS | — |
| "no-cors" Headers object cannot have width/100 as header | PASS | PASS | PASS | PASS | PASS | — |
| "no-cors" Headers object cannot have unknown/doesitmatter as header | PASS | PASS | PASS | PASS | PASS | — |