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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.

wpt / resource-timing

Spec: Resource Timing ↗

Runs: Chrome 158.0.8110.0 (wpt@850b36a56, 2026-10-18) | Firefox 160.0a1 (wpt@b58866519, 2026-10-18) | Safari 254 preview (wpt@850b36a56, 2026-10-18) | Ladybird 1.0-0197d (wpt@850b36a56, 2026-10-18) | Servo Servo 0.7 (wpt@df642c414, 2026-10-17) | Blitz fb8d6c15e (wpt@cd1d8aa5b, 2026-10-17)

Score history

Percentage of subtests passing over time, one master run per day. Every engine's percentage is relative to the same denominator: the total number of subtests known to any engine in the latest runs (so lines are not distorted by tests being added to WPT, and an engine that skips tests is not flattered for it).

1 month3 months6 months1 year2 years4 yearsAll time
0%20%40%60%80%100%Nov 2025Dec 2025Jan 2026Feb 2026Mar 2026Apr 2026May 2026Jun 2026Jul 2026Aug 2026Sep 2026Oct 2026ChromeFirefoxSafariLadybirdServo

Sort: alphabetical | by subtest count

AreaChromeFirefoxSafariLadybirdServoBlitz
Total98.7%1184/119980.5%966/119934.8%418/119941.0%492/119921.5%258/11990.0%0/1199
initiator-type95.9%48/5074.0%37/5080.0%40/5054.0%27/5062.0%31/500.0%0/50
tentative100.0%79/790.0%0/790.0%0/790.0%0/790.0%0/790.0%0/79
TestChromeFirefoxSafariLadybirdServoBlitz
Total98.7%1057/107086.8%929/107035.3%378/107043.4%465/107021.2%227/1070NO DATA
304-response-recorded.htmlPASSPASSPASSPASSFAILNOT RUN
SO-XO-SO-redirect-chain-tao.https.html4/44/43/40/40/4NOT RUN
TAO-match.html60/6060/600/606/6024/60NOT RUN
TAO-port-mismatch-means-crossorigin.html2/22/21/20/21/2NOT RUN
body-size-cross-origin.https.html4/66/63/60/61/6NOT RUN
buffer-full-add-after-full-event.htmlPASSPASSPASSPASSTIMEOUTNOT RUN
buffer-full-add-entries-during-callback-that-drop.htmlPASSPASSPASSPASSPASSNOT RUN
buffer-full-add-entries-during-callback.htmlPASSPASSPASSPASSPASSNOT RUN
buffer-full-add-then-clear.htmlPASSFAILPASSPASSPASSNOT RUN
buffer-full-decrease-buffer-during-callback.htmlPASSPASSPASSPASSPASSNOT RUN
buffer-full-eventually.htmlPASSPASSPASSTIMEOUTPASSNOT RUN
buffer-full-increase-buffer-during-callback.htmlPASSPASSPASSPASSPASSNOT RUN
buffer-full-inspect-buffer-during-callback.htmlPASSPASSPASSPASSPASSNOT RUN
buffer-full-set-to-current-buffer.htmlPASSPASSPASSPASSPASSNOT RUN
buffer-full-store-and-clear-during-callback.htmlPASSPASSPASSPASSPASSNOT RUN
buffer-full-then-decreased.htmlPASSPASSPASSPASSPASSNOT RUN
buffer-full-then-increased.htmlPASSFAILPASSPASSPASSNOT RUN
buffer-full-when-populate-entries.htmlPASSERRORPASSPASSPASSNOT RUN
buffered-flag.any.htmlPASSPASSPASSTIMEOUTPASSNOT RUN
buffered-flag.any.worker.htmlPASSPASSPASSTIMEOUTPASSNOT RUN
cached-image-gets-single-entry.htmlPASSPASSPASSTIMEOUTPASSNOT RUN
clear-resource-timings.htmlPASSPASSPASSPASSPASSNOT RUN
connection-reuse.html6/66/64/62/60/6NOT RUN
connection-reuse.https.html2/22/22/20/20/2NOT RUN
content-encoding.https.html29/290/290/290/290/29NOT RUN
content-type-minimization.html77/7746/770/770/770/77NOT RUN
content-type.html21/2121/210/215/210/21NOT RUN
cors-preflight.any.htmlPASSPASSFAILPASSFAILNOT RUN
cors-preflight.any.worker.htmlPASSPASSFAILPASSFAILNOT RUN
cross-origin-iframe.html2/22/21/20/21/2NOT RUN
cross-origin-redirects.html11/1111/1110/110/112/11NOT RUN
cross-origin-start-end-time-with-redirects.htmlPASSPASSPASSFAILFAILNOT RUN
cross-origin-status-codes.htmlPASSPASSPASSTIMEOUTPASSNOT RUN
decoded-body-size-compressed.https.html8/88/86/80/80/8NOT RUN
delivery-type.tentative.any.html3/31/31/33/30/3NOT RUN
delivery-type.tentative.any.serviceworker.html3/31/31/30/30/3NOT RUN
delivery-type.tentative.any.sharedworker.html3/31/31/33/30/3NOT RUN
delivery-type.tentative.any.worker.html3/31/31/33/30/3NOT RUN
document-domain-no-impact-opener.htmlPASSPASSPASSFAILFAILNOT RUN
encoded-body-size-cached.https.html2/20/20/20/20/2NOT RUN
entries-for-network-errors.sub.https.html9/90/90/90/90/9NOT RUN
entry-attributes.html3/33/31/31/30/3NOT RUN
event-source-timing.htmlPASSPASSPASSPASSTIMEOUTNOT RUN
fetch-cross-origin-redirect.https.html2/22/22/22/20/2NOT RUN
font-timestamps.html2/22/22/22/20/2NOT RUN
idlharness.any.html74/7966/7970/7968/7954/79NOT RUN
idlharness.any.worker.html74/7966/7970/7968/7954/79NOT RUN
iframe-failed-commit.html12/120/120/120/120/12NOT RUN
iframe-non-html.html4/44/44/40/44/4NOT RUN
iframe-redirect-without-location.htmlPASSPASSFAILFAILPASSNOT RUN
iframe-sequence-of-events.html19/1919/191/195/199/19NOT RUN
iframe-with-download.htmlPASSPASSPASSPASSFAILNOT RUN
image-sequence-of-events.html3/33/33/30/33/3NOT RUN
initiator-type-for-script.htmlPASSPASSPASSPASSPASSNOT RUN
input-sequence-of-events.htmlPASSPASSPASSPASSTIMEOUTNOT RUN
interim-response-times.h2.html12/1212/1212/126/120/12NOT RUN
interim-response-times.html12/1212/1212/126/120/12NOT RUN
internal-resources-not-counted.htmlPASSPASSPASSPASSFAILNOT RUN
link-sequence-of-events.htmlPASSPASSPASSPASSPASSNOT RUN
load-from-mem-cache-transfer-size.htmlPASSPASSPASSPASSFAILNOT RUN
nested-context-navigations-embed.html9/99/99/90/90/9NOT RUN
nested-context-navigations-iframe.html9/99/90/99/90/9NOT RUN
nested-context-navigations-object.html9/99/99/99/90/9NOT RUN
nested-nav-fallback-timing.html2/20/20/22/20/2NOT RUN
nextHopProtocol-is-tao-protected.https.html16/1616/1615/1613/167/16NOT RUN
no-entries-for-cross-origin-css-fetched-memory-cache.sub.htmlPASSPASSPASSPASSFAILNOT RUN
no-entries-for-cross-origin-css-fetched.sub.htmlPASSFAILPASSFAILFAILNOT RUN
object-not-found-adds-entry.html3/33/30/30/30/3NOT RUN
object-not-found-after-TAO-cross-origin-redirect.html7/87/82/87/82/8NOT RUN
object-not-found-after-cross-origin-redirect.htmlPASSPASSFAILPASSFAILNOT RUN
opaque-origin.html2/22/21/20/21/2NOT RUN
ping-rt-entries.htmlPASSFAILFAILFAILFAILNOT RUN
queue-entry-regardless-buffer-size.htmlPASSPASSPASSPASSTIMEOUTNOT RUN
redirects.html6/66/66/64/60/6NOT RUN
render-blocking-status-link.htmlPASSFAILFAILFAILFAILNOT RUN
render-blocking-status-script.htmlPASSFAILFAILFAILFAILNOT RUN
resource-ignore-data-url.htmlPASSPASSPASSTIMEOUTFAILNOT RUN
resource-reload-TAO.htmlPASSPASSFAILPASSFAILNOT RUN
resource-timing-failed-fetch-web-bundle.tentative.htmlPASSERRORERRORERRORERRORNOT RUN
resource-timing-failed-fetch.htmlPASSFAILPASSPASSPASSNOT RUN
resource-timing-level1.sub.html21/2121/210/210/210/21NOT RUN
resource_connection_reuse_mixed_content.html8/88/88/87/83/8NOT RUN
resource_connection_reuse_mixed_content_redirect.html8/88/88/87/83/8NOT RUN
resource_dedicated_worker.htmlPASSPASSPASSPASSPASSNOT RUN
resource_nested_dedicated_worker.worker.htmlPASSFAILPASSFAILFAILNOT RUN
resource_reparenting.htmlPASSPASSFAILFAILPASSNOT RUN
resource_subframe_self_navigation.html4/44/44/40/40/4NOT RUN
resource_timing.worker.htmlPASSPASSPASSTIMEOUTTIMEOUTNOT RUN
resource_timing_content_length.html4/44/40/40/40/4NOT RUN
response-status-code.cors.html30/3030/300/3020/300/30NOT RUN
response-status-code.cross-origin-redirect.html30/3030/300/3014/300/30NOT RUN
response-status-code.no-cors.html160/160160/1600/16070/1600/160NOT RUN
response-status-code.same-origin-redirect.html30/3030/300/304/300/30NOT RUN
response-status-code.same-origin.html100/100100/1000/10054/1000/100NOT RUN
same-origin-from-cross-origin-redirect.htmlPASSFAILPASSFAILFAILNOT RUN
script-rt-entries.html2/22/22/22/22/2NOT RUN
secure-iframe-in-insecure-context.html2/22/20/21/21/2NOT RUN
shared-worker-rt-entry.htmlPASSPASSFAILPASSPASSNOT RUN
sizes-cache.any.htmlPASSFAILFAILFAILFAILNOT RUN
sizes-cache.any.serviceworker.htmlPASSFAILFAILERRORERRORNOT RUN
sizes-cache.any.sharedworker.htmlPASSFAILFAILFAILFAILNOT RUN
sizes-cache.any.worker.htmlPASSFAILFAILFAILFAILNOT RUN
sizes-redirect-img.html5/55/52/50/50/5NOT RUN
sizes-redirect.any.htmlPASSPASSFAILFAILFAILNOT RUN
sizes-redirect.any.serviceworker.htmlPASSFAILFAILERRORERRORNOT RUN
sizes-redirect.any.sharedworker.htmlPASSFAILFAILFAILFAILNOT RUN
sizes-redirect.any.worker.htmlPASSFAILFAILFAILFAILNOT RUN
status-codes-create-entry.htmlPASSPASSPASSFAILPASSNOT RUN
supported_resource_type.any.html2/22/22/21/22/2NOT RUN
supported_resource_type.any.worker.html2/22/22/21/22/2NOT RUN
test_resource_timing.html28/2828/2828/2814/2813/28NOT RUN
test_resource_timing.https.html28/2828/2828/2814/2813/28NOT RUN
tojson.htmlPASSFAILFAILPASSFAILNOT RUN
workerStart-tao-protected.https.html3/32/32/30/30/3NOT RUN
worklet-rt-entries.https.htmlPASSFAILFAILFAILFAILNOT RUN
xhr-resource-timing.html2/22/21/21/20/2NOT RUN