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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 / wasm / webapi

Spec: WebAssembly Web API ↗

Runs: Chrome 158.0.8110.0 (wpt@4c84956f8, 2026-10-18) | Firefox 160.0a1 (wpt@b58866519, 2026-10-18) | Safari 254 preview (wpt@850b36a56, 2026-10-18) | Ladybird 1.0-75f48 (wpt@4c84956f8, 2026-10-18) | Servo Servo 0.7 (wpt@df642c414, 2026-10-17) | Blitz 38ca4e777 (wpt@cd1d8aa5b, 2026-10-18)

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
Total97.7%1050/107497.4%1047/107497.7%1050/107466.8%718/107433.3%358/10740.0%0/1074
esm-integration7.6%2/2611.5%3/267.6%2/2653.8%14/2611.5%3/260.0%0/26
TestChromeFirefoxSafariLadybirdServoBlitz
Total100.0%1048/104899.6%1044/1048100.0%1048/104867.1%704/104833.8%355/1048NO DATA
abort.any.html6/66/66/66/66/6NOT RUN
abort.any.worker.html6/66/66/66/66/6NOT RUN
body.any.html4/44/44/44/44/4NOT RUN
body.any.serviceworker.html4/44/44/40/40/4NOT RUN
body.any.sharedworker.html4/44/44/44/44/4NOT RUN
body.any.worker.html4/44/44/44/44/4NOT RUN
contenttype.any.html22/2222/2222/2213/2218/22NOT RUN
contenttype.any.serviceworker.html22/2222/2222/220/220/22NOT RUN
contenttype.any.sharedworker.html22/2222/2222/2213/2218/22NOT RUN
contenttype.any.worker.html22/2222/2222/2213/2218/22NOT RUN
empty-body.any.html8/88/88/88/80/8NOT RUN
empty-body.any.serviceworker.html8/88/88/80/80/8NOT RUN
empty-body.any.sharedworker.html8/88/88/88/80/8NOT RUN
empty-body.any.worker.html8/88/88/88/80/8NOT RUN
historical.any.htmlPASSPASSPASSPASSPASSNOT RUN
historical.any.serviceworker.htmlPASSPASSPASSERRORERRORNOT RUN
historical.any.sharedworker.htmlPASSPASSPASSPASSPASSNOT RUN
historical.any.worker.htmlPASSPASSPASSPASSTIMEOUTNOT RUN
idlharness.any.html12/1212/1212/1211/1212/12NOT RUN
idlharness.any.worker.html12/1212/1212/1211/1212/12NOT RUN
instantiateStreaming-bad-imports.any.html106/106106/106106/106106/1067/106NOT RUN
instantiateStreaming-bad-imports.any.serviceworker.html106/106106/106106/1060/1060/106NOT RUN
instantiateStreaming-bad-imports.any.sharedworker.html106/106106/106106/106106/1067/106NOT RUN
instantiateStreaming-bad-imports.any.worker.html106/106106/106106/106106/1067/106NOT RUN
instantiateStreaming.any.html25/2525/2525/250/250/25NOT RUN
instantiateStreaming.any.serviceworker.html25/2525/2525/250/250/25NOT RUN
instantiateStreaming.any.sharedworker.html25/2525/2525/250/250/25NOT RUN
instantiateStreaming.any.worker.html25/2525/2525/250/250/25NOT RUN
invalid-args.any.html44/4444/4444/4444/4444/44NOT RUN
invalid-args.any.serviceworker.html44/4444/4444/440/440/44NOT RUN
invalid-args.any.sharedworker.html44/4444/4444/4444/4444/44NOT RUN
invalid-args.any.worker.html44/4444/4444/4444/4444/44NOT RUN
invalid-code.any.html4/44/44/44/40/4NOT RUN
invalid-code.any.serviceworker.html4/44/44/40/40/4NOT RUN
invalid-code.any.sharedworker.html4/44/44/44/40/4NOT RUN
invalid-code.any.worker.html4/44/44/44/40/4NOT RUN
modified-contenttype.any.html4/44/44/44/40/4NOT RUN
modified-contenttype.any.serviceworker.html4/44/44/40/40/4NOT RUN
modified-contenttype.any.sharedworker.html4/44/44/44/40/4NOT RUN
modified-contenttype.any.worker.html4/44/44/44/40/4NOT RUN
origin.sub.any.html4/44/44/44/44/4NOT RUN
origin.sub.any.serviceworker.html4/44/44/40/40/4NOT RUN
origin.sub.any.sharedworker.html4/44/44/44/44/4NOT RUN
origin.sub.any.worker.html4/44/44/44/44/4NOT RUN
rejected-arg.any.html2/22/22/22/22/2NOT RUN
rejected-arg.any.serviceworker.html2/22/22/20/20/2NOT RUN
rejected-arg.any.sharedworker.html2/22/22/22/22/2NOT RUN
rejected-arg.any.worker.html2/22/22/22/22/2NOT RUN
status.any.html16/1616/1616/1616/1616/16NOT RUN
status.any.serviceworker.html16/1616/1616/160/160/16NOT RUN
status.any.sharedworker.html16/1616/1616/1616/1616/16NOT RUN
status.any.worker.html16/1616/1616/1616/1616/16NOT RUN
wasm_stream_compile_test.any.html13/1312/1313/1313/138/13NOT RUN
wasm_stream_compile_test.any.worker.html13/1312/1313/1313/138/13NOT RUN
wasm_stream_instantiate_test.any.html13/1312/1313/1313/138/13NOT RUN
wasm_stream_instantiate_test.any.worker.html13/1312/1313/1313/138/13NOT RUN