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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 / web-locks

Spec: Web Locks API ↗

Runs: Chrome 158.0.8110.0 (wpt@831ff48a8, 2026-10-18) | Firefox 160.0a1 (wpt@b58866519, 2026-10-18) | Safari 254 preview (wpt@470a7adf8, 2026-10-18) | Ladybird 1.0-ecff1 (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
Total99.0%517/52297.5%509/52296.5%504/52271.2%372/52210.7%56/5220.0%0/522
bfcache86.2%25/2968.9%20/2958.6%17/2941.3%12/290.0%0/290.0%0/29
crashtests100.0%5/5100.0%5/5100.0%5/5100.0%5/540.0%2/50.0%0/5
TestChromeFirefoxSafariLadybirdServoBlitz
Total99.7%487/48899.1%484/48898.7%482/48872.7%355/48811.0%54/488NO DATA
acquire.https.any.html11/1111/1111/1111/110/11NOT RUN
acquire.https.any.serviceworker.html11/1111/1111/110/110/11NOT RUN
acquire.https.any.sharedworker.html11/1111/1111/1111/110/11NOT RUN
acquire.https.any.worker.html11/1111/1111/1111/110/11NOT RUN
clientids.https.htmlFAILPASSPASSFAILFAILNOT RUN
frames.https.html8/88/88/82/80/8NOT RUN
held.https.any.html4/44/44/44/40/4NOT RUN
held.https.any.serviceworker.html4/44/44/40/40/4NOT RUN
held.https.any.sharedworker.html4/44/44/44/40/4NOT RUN
held.https.any.worker.html4/44/44/44/40/4NOT RUN
idlharness.https.any.html47/4747/4747/4747/4717/47NOT RUN
idlharness.https.any.serviceworker.html47/4747/4747/470/470/47NOT RUN
idlharness.https.any.sharedworker.html47/4747/4747/4747/4717/47NOT RUN
idlharness.https.any.worker.html47/4747/4747/4747/4717/47NOT RUN
ifAvailable.https.any.html10/1010/1010/1010/100/10NOT RUN
ifAvailable.https.any.serviceworker.html10/1010/1010/100/100/10NOT RUN
ifAvailable.https.any.sharedworker.html10/1010/1010/1010/100/10NOT RUN
ifAvailable.https.any.worker.html10/1010/1010/1010/100/10NOT RUN
lock-attributes.https.any.html2/22/22/22/20/2NOT RUN
lock-attributes.https.any.serviceworker.html2/22/22/20/20/2NOT RUN
lock-attributes.https.any.sharedworker.html2/22/22/22/20/2NOT RUN
lock-attributes.https.any.worker.html2/22/22/22/20/2NOT RUN
mode-exclusive.https.any.html2/22/22/22/20/2NOT RUN
mode-exclusive.https.any.serviceworker.html2/22/22/20/20/2NOT RUN
mode-exclusive.https.any.sharedworker.html2/22/22/22/20/2NOT RUN
mode-exclusive.https.any.worker.html2/22/22/22/20/2NOT RUN
mode-mixed.https.any.html3/33/33/33/30/3NOT RUN
mode-mixed.https.any.serviceworker.html3/33/33/30/30/3NOT RUN
mode-mixed.https.any.sharedworker.html3/33/33/33/30/3NOT RUN
mode-mixed.https.any.worker.html3/33/33/33/30/3NOT RUN
mode-shared.https.any.html2/22/22/22/20/2NOT RUN
mode-shared.https.any.serviceworker.html2/22/22/20/20/2NOT RUN
mode-shared.https.any.sharedworker.html2/22/22/22/20/2NOT RUN
mode-shared.https.any.worker.html2/22/22/22/20/2NOT RUN
non-fully-active.https.html5/55/55/54/50/5NOT RUN
non-secure-context.any.htmlPASSPASSPASSPASSPASSNOT RUN
non-secure-context.any.sharedworker.htmlPASSPASSPASSPASSPASSNOT RUN
non-secure-context.any.worker.htmlPASSPASSPASSPASSPASSNOT RUN
opaque-origin.https.html4/44/44/42/40/4NOT RUN
partitioned-web-locks.tentative.https.html2/22/21/22/20/2NOT RUN
query-empty.https.any.htmlPASSPASSPASSPASSFAILNOT RUN
query-empty.https.any.serviceworker.htmlPASSPASSPASSERRORERRORNOT RUN
query-empty.https.any.sharedworker.htmlPASSPASSPASSPASSFAILNOT RUN
query-empty.https.any.worker.htmlPASSPASSPASSPASSFAILNOT RUN
query-ordering.https.htmlPASSPASSPASSFAILFAILNOT RUN
query.https.any.html9/99/99/97/90/9NOT RUN
query.https.any.worker.html9/99/99/97/90/9NOT RUN
resource-names.https.any.html8/88/88/88/80/8NOT RUN
resource-names.https.any.serviceworker.html8/88/88/80/80/8NOT RUN
resource-names.https.any.sharedworker.html8/88/88/88/80/8NOT RUN
resource-names.https.any.worker.html8/88/88/88/80/8NOT RUN
secure-context.https.any.htmlPASSPASSPASSPASSFAILNOT RUN
secure-context.https.any.serviceworker.htmlPASSPASSPASSERRORERRORNOT RUN
secure-context.https.any.sharedworker.htmlPASSPASSPASSPASSFAILNOT RUN
secure-context.https.any.worker.htmlPASSPASSPASSPASSFAILNOT RUN
signal.https.any.html13/1313/1313/1313/130/13NOT RUN
signal.https.any.serviceworker.html13/1313/1313/130/130/13NOT RUN
signal.https.any.sharedworker.html13/1313/1313/1313/130/13NOT RUN
signal.https.any.worker.html13/1313/1313/1313/130/13NOT RUN
steal.https.any.html5/55/55/55/50/5NOT RUN
steal.https.any.serviceworker.html5/55/55/50/50/5NOT RUN
steal.https.any.sharedworker.html5/55/55/55/50/5NOT RUN
steal.https.any.worker.html5/55/55/55/50/5NOT RUN
storage-buckets.tentative.https.any.htmlPASSFAILFAILFAILFAILNOT RUN
storage-buckets.tentative.https.any.serviceworker.htmlPASSFAILFAILERRORERRORNOT RUN
storage-buckets.tentative.https.any.sharedworker.htmlPASSFAILFAILFAILFAILNOT RUN
storage-buckets.tentative.https.any.worker.htmlPASSFAILFAILFAILFAILNOT RUN
windows.https.window.html2/22/21/20/20/2NOT RUN
workers.https.html4/44/44/41/40/4NOT RUN