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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 / webtransport

Spec: WebTransport ↗

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-e7b21 (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
Total94.7%1311/138379.6%1102/138392.4%1279/13830.2%3/13830.2%3/13830.0%0/1383
TestChromeFirefoxSafariLadybirdServoBlitz
Total94.7%1311/138379.6%1102/138392.4%1279/13830.2%3/13830.2%3/1383NO DATA
anticipated-concurrent-incoming-streams.https.any.html18/181/1816/180/180/18NOT RUN
anticipated-concurrent-incoming-streams.https.any.serviceworker.html18/181/1816/180/180/18NOT RUN
anticipated-concurrent-incoming-streams.https.any.sharedworker.html18/181/1816/180/180/18NOT RUN
anticipated-concurrent-incoming-streams.https.any.worker.html18/181/1816/180/180/18NOT RUN
anticipated-streams.https.any.html8/82/84/80/8NOT RUNNOT RUN
anticipated-streams.https.any.serviceworker.html8/82/84/80/8NOT RUNNOT RUN
anticipated-streams.https.any.sharedworker.html8/82/84/80/8NOT RUNNOT RUN
anticipated-streams.https.any.worker.html8/82/84/80/8NOT RUNNOT RUN
back-forward-cache-with-closed-webtransport-connection-ccns.https.tentative.window.htmlFAILFAILFAILFAILFAILNOT RUN
back-forward-cache-with-closed-webtransport-connection.https.window.htmlPASSPASSPASSFAILFAILNOT RUN
back-forward-cache-with-open-webtransport-connection-ccns.https.tentative.window.htmlFAILFAILFAILFAILFAILNOT RUN
back-forward-cache-with-open-webtransport-connection.https.window.htmlPASSFAILPASSFAILFAILNOT RUN
bidirectional-cancel-crash.https.htmlPASSPASSPASSTIMEOUTTIMEOUTNOT RUN
close.https.any.html12/1212/129/120/120/12NOT RUN
close.https.any.serviceworker.html12/1212/129/120/120/12NOT RUN
close.https.any.sharedworker.html12/1212/129/120/120/12NOT RUN
close.https.any.worker.html12/1212/129/120/120/12NOT RUN
congestion-control.https.any.html4/44/44/40/40/4NOT RUN
congestion-control.https.any.serviceworker.html4/44/44/40/40/4NOT RUN
congestion-control.https.any.sharedworker.html4/44/44/40/40/4NOT RUN
congestion-control.https.any.worker.html4/44/44/40/40/4NOT RUN
connect.https.any.html15/1515/1515/150/150/15NOT RUN
connect.https.any.serviceworker.html15/1515/1515/150/150/15NOT RUN
connect.https.any.sharedworker.html15/1515/1515/150/150/15NOT RUN
connect.https.any.worker.html15/1515/1515/150/150/15NOT RUN
constructor-sharedarraybuffer.https.any.html2/22/22/20/20/2NOT RUN
constructor-sharedarraybuffer.https.any.serviceworker.html2/22/22/20/20/2NOT RUN
constructor-sharedarraybuffer.https.any.sharedworker.html2/22/22/20/20/2NOT RUN
constructor-sharedarraybuffer.https.any.worker.html2/22/22/20/20/2NOT RUN
constructor.https.sub.any.html29/2929/2929/290/290/29NOT RUN
constructor.https.sub.any.serviceworker.html29/2929/2929/290/290/29NOT RUN
constructor.https.sub.any.sharedworker.html29/2929/2929/290/290/29NOT RUN
constructor.https.sub.any.worker.html29/2929/2929/290/290/29NOT RUN
csp-fail.https.window.htmlPASSPASSPASSFAILFAILNOT RUN
csp-pass.https.window.htmlPASSPASSPASSFAILFAILNOT RUN
datagram-bad-chunk.https.any.htmlPASSPASSPASSFAILFAILNOT RUN
datagram-bad-chunk.https.any.serviceworker.htmlPASSPASSPASSERRORERRORNOT RUN
datagram-bad-chunk.https.any.sharedworker.htmlPASSPASSPASSFAILFAILNOT RUN
datagram-bad-chunk.https.any.worker.htmlPASSPASSPASSFAILFAILNOT RUN
datagram-cancel-crash.https.sub.window.htmlPASSPASSPASSFAILFAILNOT RUN
datagrams-writable.https.any.html11/1311/1310/130/130/13NOT RUN
datagrams.https.any.html11/116/1111/110/110/11NOT RUN
datagrams.https.any.serviceworker.html11/116/1111/110/110/11NOT RUN
datagrams.https.any.sharedworker.html11/116/1111/110/110/11NOT RUN
datagrams.https.any.worker.html11/116/1111/110/110/11NOT RUN
draining.https.any.html8/83/83/80/80/8NOT RUN
draining.https.any.serviceworker.html8/83/83/80/80/8NOT RUN
draining.https.any.sharedworker.html8/83/83/80/80/8NOT RUN
draining.https.any.worker.html8/83/84/80/80/8NOT RUN
echo-large-bidirectional-streams.https.any.htmlPASSPASSPASSFAILFAILNOT RUN
echo-large-bidirectional-streams.https.any.serviceworker.htmlPASSPASSPASSERRORERRORNOT RUN
echo-large-bidirectional-streams.https.any.sharedworker.htmlPASSPASSPASSFAILFAILNOT RUN
echo-large-bidirectional-streams.https.any.worker.htmlPASSPASSPASSFAILFAILNOT RUN
export-keying-material.https.any.html15/1514/1512/150/150/15NOT RUN
export-keying-material.https.any.serviceworker.html15/1514/1512/150/150/15NOT RUN
export-keying-material.https.any.sharedworker.html15/1514/1512/150/150/15NOT RUN
export-keying-material.https.any.worker.html15/1514/1512/150/150/15NOT RUN
headers.https.any.html21/2121/2121/210/210/21NOT RUN
headers.https.any.serviceworker.html21/2121/2121/210/210/21NOT RUN
headers.https.any.sharedworker.html21/2121/2121/210/210/21NOT RUN
headers.https.any.worker.html21/2121/2121/210/210/21NOT RUN
historical.https.sub.any.html0/32/33/30/30/3NOT RUN
historical.https.sub.any.serviceworker.html0/32/33/30/30/3NOT RUN
historical.https.sub.any.sharedworker.html0/32/33/30/30/3NOT RUN
historical.https.sub.any.worker.html0/32/33/30/30/3NOT RUN
idlharness.https.sub.any.html112/121108/121121/1211/1211/121NOT RUN
idlharness.https.sub.any.serviceworker.html112/121108/121121/1210/1210/121NOT RUN
idlharness.https.sub.any.sharedworker.html112/121108/121121/1211/1211/121NOT RUN
idlharness.https.sub.any.worker.html112/121108/121121/1211/1211/121NOT RUN
in-removed-iframe.https.htmlPASSPASSPASSFAILFAILNOT RUN
incoming-multiple-streams.https.any.html2/22/22/20/20/2NOT RUN
incoming-multiple-streams.https.any.serviceworker.html2/22/22/20/20/2NOT RUN
incoming-multiple-streams.https.any.sharedworker.html2/22/22/20/20/2NOT RUN
incoming-multiple-streams.https.any.worker.html2/22/22/20/20/2NOT RUN
receive-stream-pull.https.any.html3/33/33/30/30/3NOT RUN
receive-stream-pull.https.any.serviceworker.html3/33/33/30/30/3NOT RUN
receive-stream-pull.https.any.sharedworker.html3/33/33/30/30/3NOT RUN
receive-stream-pull.https.any.worker.html3/33/33/30/30/3NOT RUN
receive-stream-stats.https.any.html4/40/42/40/40/4NOT RUN
receive-stream-stats.https.any.serviceworker.html4/40/42/40/40/4NOT RUN
receive-stream-stats.https.any.sharedworker.html4/40/42/40/40/4NOT RUN
receive-stream-stats.https.any.worker.html4/40/42/40/40/4NOT RUN
reliability.https.any.htmlPASSPASSPASSFAILFAILNOT RUN
reliability.https.any.serviceworker.htmlPASSPASSPASSERRORERRORNOT RUN
reliability.https.any.sharedworker.htmlPASSPASSPASSFAILFAILNOT RUN
reliability.https.any.worker.htmlPASSPASSPASSFAILFAILNOT RUN
reliability.https.window.htmlPASSPASSPASSFAILFAILNOT RUN
response-headers.https.any.html2/22/22/20/2NOT RUNNOT RUN
response-headers.https.any.serviceworker.html2/22/22/20/2NOT RUNNOT RUN
response-headers.https.any.sharedworker.html2/22/22/20/2NOT RUNNOT RUN
response-headers.https.any.worker.html2/22/22/20/2NOT RUNNOT RUN
sendgroup.https.any.html13/1313/1312/130/130/13NOT RUN
sendgroup.https.any.serviceworker.html13/1313/1312/130/130/13NOT RUN
sendgroup.https.any.sharedworker.html13/1313/1312/130/130/13NOT RUN
sendgroup.https.any.worker.html13/1313/1312/130/130/13NOT RUN
sendorder.https.any.html3/33/33/30/30/3NOT RUN
sendorder.https.any.serviceworker.html3/33/33/30/30/3NOT RUN
sendorder.https.any.sharedworker.html3/33/33/30/30/3NOT RUN
sendorder.https.any.worker.html3/33/33/30/30/3NOT RUN
sendstream-bad-chunk.https.any.htmlPASSPASSPASSFAILFAILNOT RUN
sendstream-bad-chunk.https.any.serviceworker.htmlPASSPASSPASSERRORERRORNOT RUN
sendstream-bad-chunk.https.any.sharedworker.htmlPASSPASSPASSFAILFAILNOT RUN
sendstream-bad-chunk.https.any.worker.htmlPASSPASSPASSFAILFAILNOT RUN
server-certificate-hashes.https.any.htmlPASSPASSPASSFAILFAILNOT RUN
server-certificate-hashes.https.any.serviceworker.htmlPASSPASSPASSERRORERRORNOT RUN
server-certificate-hashes.https.any.sharedworker.htmlPASSPASSPASSFAILFAILNOT RUN
server-certificate-hashes.https.any.worker.htmlPASSPASSPASSFAILFAILNOT RUN
stats.https.any.html8/88/88/80/80/8NOT RUN
stats.https.any.serviceworker.html8/88/88/80/80/8NOT RUN
stats.https.any.sharedworker.html8/88/88/80/80/8NOT RUN
stats.https.any.worker.html8/88/88/80/80/8NOT RUN
stream-stats.https.any.html6/11NOT RUN6/110/11NOT RUNNOT RUN
stream-stats.https.any.serviceworker.html6/11NOT RUN6/110/11NOT RUNNOT RUN
stream-stats.https.any.sharedworker.html6/11NOT RUN6/110/11NOT RUNNOT RUN
stream-stats.https.any.worker.html6/11NOT RUN6/110/11NOT RUNNOT RUN
streams-close.https.any.html10/106/1010/100/100/10NOT RUN
streams-close.https.any.serviceworker.html10/106/1010/100/100/10NOT RUN
streams-close.https.any.sharedworker.html10/106/1010/100/100/10NOT RUN
streams-close.https.any.worker.html10/106/1010/100/100/10NOT RUN
streams-echo.https.any.html10/1010/1010/100/100/10NOT RUN
streams-echo.https.any.serviceworker.html10/1010/1010/100/100/10NOT RUN
streams-echo.https.any.sharedworker.html10/1010/1010/100/100/10NOT RUN
streams-echo.https.any.worker.html10/1010/1010/100/100/10NOT RUN
streams-reset-bidi-keeps-writing.https.any.htmlPASSNOT RUNPASSFAILNOT RUNNOT RUN
streams-reset-bidi-keeps-writing.https.any.serviceworker.htmlPASSNOT RUNPASSERRORNOT RUNNOT RUN
streams-reset-bidi-keeps-writing.https.any.sharedworker.htmlPASSNOT RUNPASSFAILNOT RUNNOT RUN
streams-reset-bidi-keeps-writing.https.any.worker.htmlPASSNOT RUNPASSFAILNOT RUNNOT RUN
streams-stop-sending-bidi-keeps-reading.https.any.htmlPASSNOT RUNPASSFAILNOT RUNNOT RUN
streams-stop-sending-bidi-keeps-reading.https.any.serviceworker.htmlPASSNOT RUNPASSERRORNOT RUNNOT RUN
streams-stop-sending-bidi-keeps-reading.https.any.sharedworker.htmlPASSNOT RUNPASSFAILNOT RUNNOT RUN
streams-stop-sending-bidi-keeps-reading.https.any.worker.htmlPASSNOT RUNPASSFAILNOT RUNNOT RUN