WPT
wpt / resource-timing / idlharness.any.html
Spec: Resource Timing ↗
Runs: Chrome 155.0.8041.0 (wpt@2c385f65e, 2026-09-04) | Firefox 157.0a1 (wpt@2c385f65e, 2026-09-04) | Safari 251 preview (wpt@5ce815a83, 2026-08-27) | Ladybird 1.0-a7825 (wpt@2c385f65e, 2026-09-04) | 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 | 74/79 | 64/79 | 70/79 | 68/79 | 54/79 | NOT RUN |
| Subtest | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| idl_test setup | PASS | PASS | PASS | PASS | PASS | — |
| idl_test validation | PASS | PASS | PASS | PASS | PASS | — |
| Partial interface Performance: original interface defined | PASS | PASS | PASS | PASS | PASS | — |
| Partial interface Performance: member names are unique | PASS | PASS | PASS | PASS | PASS | — |
| Partial interface Performance[2]: member names are unique | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: existence and properties of interface object | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface object length | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface object name | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: existence and properties of interface prototype object | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: existence and properties of interface prototype object's "constructor" property | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: existence and properties of interface prototype object's @@unscopables property | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: attribute initiatorType | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: attribute deliveryType | PASS | FAIL | PASS | PASS | FAIL | — |
| PerformanceResourceTiming interface: attribute nextHopProtocol | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: attribute workerStart | PASS | PASS | PASS | PASS | FAIL | — |
| PerformanceResourceTiming interface: attribute redirectStart | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: attribute redirectEnd | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: attribute fetchStart | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: attribute domainLookupStart | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: attribute domainLookupEnd | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: attribute connectStart | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: attribute connectEnd | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: attribute secureConnectionStart | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: attribute requestStart | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: attribute finalResponseHeadersStart | PASS | PASS | PASS | PASS | FAIL | — |
| PerformanceResourceTiming interface: attribute firstInterimResponseStart | PASS | PASS | PASS | PASS | FAIL | — |
| PerformanceResourceTiming interface: attribute responseStart | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: attribute responseEnd | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: attribute workerRouterEvaluationStart | PASS | FAIL | PASS | FAIL | FAIL | — |
| PerformanceResourceTiming interface: attribute workerCacheLookupStart | PASS | FAIL | PASS | FAIL | FAIL | — |
| PerformanceResourceTiming interface: attribute workerMatchedRouterSource | FAIL | FAIL | PASS | FAIL | FAIL | — |
| PerformanceResourceTiming interface: attribute workerFinalRouterSource | FAIL | FAIL | PASS | FAIL | FAIL | — |
| PerformanceResourceTiming interface: attribute transferSize | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: attribute encodedBodySize | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: attribute decodedBodySize | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: attribute responseStatus | PASS | PASS | FAIL | PASS | FAIL | — |
| PerformanceResourceTiming interface: attribute renderBlockingStatus | PASS | FAIL | FAIL | PASS | FAIL | — |
| PerformanceResourceTiming interface: attribute contentType | PASS | PASS | FAIL | PASS | FAIL | — |
| PerformanceResourceTiming interface: attribute contentEncoding | PASS | FAIL | FAIL | FAIL | FAIL | — |
| PerformanceResourceTiming interface: operation toJSON() | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming must be primary interface of resource | PASS | PASS | PASS | PASS | PASS | — |
| Stringification of resource | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: resource must inherit property "initiatorType" with the proper type | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: resource must inherit property "deliveryType" with the proper type | PASS | FAIL | PASS | PASS | FAIL | — |
| PerformanceResourceTiming interface: resource must inherit property "nextHopProtocol" with the proper type | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: resource must inherit property "workerStart" with the proper type | PASS | PASS | PASS | PASS | FAIL | — |
| PerformanceResourceTiming interface: resource must inherit property "redirectStart" with the proper type | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: resource must inherit property "redirectEnd" with the proper type | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: resource must inherit property "fetchStart" with the proper type | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: resource must inherit property "domainLookupStart" with the proper type | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: resource must inherit property "domainLookupEnd" with the proper type | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: resource must inherit property "connectStart" with the proper type | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: resource must inherit property "connectEnd" with the proper type | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: resource must inherit property "secureConnectionStart" with the proper type | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: resource must inherit property "requestStart" with the proper type | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: resource must inherit property "finalResponseHeadersStart" with the proper type | PASS | PASS | PASS | PASS | FAIL | — |
| PerformanceResourceTiming interface: resource must inherit property "firstInterimResponseStart" with the proper type | PASS | PASS | PASS | PASS | FAIL | — |
| PerformanceResourceTiming interface: resource must inherit property "responseStart" with the proper type | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: resource must inherit property "responseEnd" with the proper type | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: resource must inherit property "workerRouterEvaluationStart" with the proper type | PASS | FAIL | PASS | FAIL | FAIL | — |
| PerformanceResourceTiming interface: resource must inherit property "workerCacheLookupStart" with the proper type | PASS | FAIL | PASS | FAIL | FAIL | — |
| PerformanceResourceTiming interface: resource must inherit property "workerMatchedRouterSource" with the proper type | FAIL | FAIL | PASS | FAIL | FAIL | — |
| PerformanceResourceTiming interface: resource must inherit property "workerFinalRouterSource" with the proper type | FAIL | FAIL | PASS | FAIL | FAIL | — |
| PerformanceResourceTiming interface: resource must inherit property "transferSize" with the proper type | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: resource must inherit property "encodedBodySize" with the proper type | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: resource must inherit property "decodedBodySize" with the proper type | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: resource must inherit property "responseStatus" with the proper type | PASS | PASS | FAIL | PASS | FAIL | — |
| PerformanceResourceTiming interface: resource must inherit property "renderBlockingStatus" with the proper type | PASS | FAIL | FAIL | PASS | FAIL | — |
| PerformanceResourceTiming interface: resource must inherit property "contentType" with the proper type | PASS | PASS | FAIL | PASS | FAIL | — |
| PerformanceResourceTiming interface: resource must inherit property "contentEncoding" with the proper type | PASS | FAIL | FAIL | FAIL | FAIL | — |
| PerformanceResourceTiming interface: resource must inherit property "toJSON()" with the proper type | PASS | PASS | PASS | PASS | PASS | — |
| PerformanceResourceTiming interface: default toJSON operation on resource | FAIL | FAIL | FAIL | FAIL | FAIL | — |
| Performance interface: operation clearResourceTimings() | PASS | PASS | PASS | PASS | PASS | — |
| Performance interface: operation setResourceTimingBufferSize(unsigned long) | PASS | PASS | PASS | PASS | PASS | — |
| Performance interface: attribute onresourcetimingbufferfull | PASS | PASS | PASS | PASS | PASS | — |
| Performance interface: performance must inherit property "clearResourceTimings()" with the proper type | PASS | PASS | PASS | PASS | PASS | — |
| Performance interface: performance must inherit property "setResourceTimingBufferSize(unsigned long)" with the proper type | PASS | PASS | PASS | PASS | PASS | — |
| Performance interface: calling setResourceTimingBufferSize(unsigned long) on performance with too few arguments must throw TypeError | PASS | PASS | PASS | PASS | PASS | — |
| Performance interface: performance must inherit property "onresourcetimingbufferfull" with the proper type | PASS | PASS | PASS | PASS | PASS | — |