WPT
wpt / clipboard-apis / async-custom-formats-write-fail.tentative.https.html
Spec: Clipboard API and events ↗
Runs: Chrome 155.0.8040.0 (wpt@476394464, 2026-09-03) | Firefox 157.0a1 (wpt@476394464, 2026-09-03) | Safari 251 preview (wpt@5ce815a83, 2026-08-27) | Ladybird 1.0-a7825 (wpt@a1e944e7a, 2026-09-03) | Servo Servo 0.6 (wpt@7e3d005d7, 2026-09-03) | Blitz a50cb8971 (wpt@a95401e4e, 2026-09-03)
View on the Blitz WPT dashboard | Open test on wpt.live | wpt.fyi
| Chrome | Firefox | Safari | Ladybird | Servo | Blitz | |
|---|---|---|---|---|---|---|
| Total | 2/5 | 5/5 | 0/5 | 5/5 | 1/5 | NOT RUN |
| Subtest | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| navigator.clipboard.write() fails for more than 100 custom formats | PASS | PASS | FAIL | PASS | FAIL | — |
| navigator.clipboard.write() fails for custom formats without web prefix | PASS | PASS | FAIL | PASS | FAIL | — |
| new ClipboardItem() fails for custom formats with web prefix, but invalid MIME types | FAIL | PASS | FAIL | PASS | PASS | — |
| navigator.clipboard.write() fails for custom format with web prefix, but different Blob type | TIMEOUT | PASS | FAIL | PASS | FAIL | — |
| navigator.clipboard.write() fails when standard format does not match the Blob type | NOTRUN | PASS | FAIL | PASS | FAIL | — |