Click here to download the Blitz Browser!

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 / streams / readable-streams

Spec: Streams ↗

Runs: Chrome 158.0.8110.0 (wpt@4c84956f8, 2026-10-18) | Firefox 160.0a1 (wpt@b58866519, 2026-10-18) | Safari 254 preview (wpt@4c84956f8, 2026-10-18) | Ladybird 1.0-52892 (wpt@9d8aceec0, 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
Total86.1%1254/145595.3%1387/145596.7%1407/145572.3%1053/145556.6%824/14550.0%0/1455
crashtests100.0%15/15100.0%15/15100.0%15/1580.0%12/1580.0%12/150.0%0/15
TestChromeFirefoxSafariLadybirdServoBlitz
Total86.0%1239/144095.2%1372/144096.6%1392/144072.2%1041/144056.3%812/1440NO DATA
async-iterator.any.html40/4137/4141/4141/410/41NOT RUN
async-iterator.any.serviceworker.html40/4137/4141/410/410/41NOT RUN
async-iterator.any.sharedworker.html40/4137/4141/4141/410/41NOT RUN
async-iterator.any.worker.html40/4137/4141/4141/410/41NOT RUN
bad-strategies.any.html8/88/88/88/88/8NOT RUN
bad-strategies.any.serviceworker.html8/88/88/80/80/8NOT RUN
bad-strategies.any.sharedworker.html8/88/88/88/88/8NOT RUN
bad-strategies.any.worker.html8/88/88/88/88/8NOT RUN
bad-underlying-sources.any.html22/2222/2222/2222/2222/22NOT RUN
bad-underlying-sources.any.serviceworker.html22/2222/2222/220/220/22NOT RUN
bad-underlying-sources.any.sharedworker.html22/2222/2222/2222/2222/22NOT RUN
bad-underlying-sources.any.worker.html22/2222/2222/2222/2222/22NOT RUN
cancel.any.html11/1111/1111/1111/1111/11NOT RUN
cancel.any.serviceworker.html11/1111/1111/110/110/11NOT RUN
cancel.any.sharedworker.html11/1111/1111/1111/1111/11NOT RUN
cancel.any.worker.html11/1111/1111/1111/1111/11NOT RUN
constructor.any.htmlPASSPASSPASSPASSPASSNOT RUN
constructor.any.serviceworker.htmlPASSPASSPASSERRORERRORNOT RUN
constructor.any.sharedworker.htmlPASSPASSPASSPASSPASSNOT RUN
constructor.any.worker.htmlPASSPASSPASSPASSPASSNOT RUN
count-queuing-strategy-integration.any.html4/44/44/44/44/4NOT RUN
count-queuing-strategy-integration.any.serviceworker.html4/44/44/40/40/4NOT RUN
count-queuing-strategy-integration.any.sharedworker.html4/44/44/44/44/4NOT RUN
count-queuing-strategy-integration.any.worker.html4/44/44/44/44/4NOT RUN
cross-realm-crash.window.htmlPASSPASSPASSPASSPASSNOT RUN
default-reader.any.html29/2929/2929/2929/2929/29NOT RUN
default-reader.any.serviceworker.html29/2929/2929/290/290/29NOT RUN
default-reader.any.sharedworker.html29/2929/2929/2929/2929/29NOT RUN
default-reader.any.worker.html29/2929/2929/2929/2929/29NOT RUN
floating-point-total-queue-size.any.html4/44/44/44/44/4NOT RUN
floating-point-total-queue-size.any.serviceworker.html4/44/44/40/40/4NOT RUN
floating-point-total-queue-size.any.sharedworker.html4/44/44/44/44/4NOT RUN
floating-point-total-queue-size.any.worker.html4/44/44/44/44/4NOT RUN
from.any.html14/5049/5050/5048/5014/50NOT RUN
from.any.serviceworker.html14/5049/5050/500/500/50NOT RUN
from.any.sharedworker.html14/5049/5050/5048/5014/50NOT RUN
from.any.worker.html14/5049/5050/5048/5014/50NOT RUN
garbage-collection.any.html5/55/55/55/55/5NOT RUN
garbage-collection.any.serviceworker.html5/55/55/50/50/5NOT RUN
garbage-collection.any.sharedworker.html5/55/55/55/55/5NOT RUN
garbage-collection.any.worker.html5/55/55/55/55/5NOT RUN
general.any.html37/3838/3838/3838/3838/38NOT RUN
general.any.serviceworker.html37/3838/3838/380/380/38NOT RUN
general.any.sharedworker.html37/3838/3838/3838/3838/38NOT RUN
general.any.worker.html37/3838/3838/3838/3838/38NOT RUN
global.html8/99/99/99/98/9NOT RUN
owning-type-message-port.tentative.any.html0/20/20/20/20/2NOT RUN
owning-type-message-port.tentative.any.serviceworker.html0/20/20/20/20/2NOT RUN
owning-type-message-port.tentative.any.sharedworker.html0/20/20/20/20/2NOT RUN
owning-type-message-port.tentative.any.worker.html0/20/20/20/20/2NOT RUN
owning-type-video-frame.tentative.any.html0/50/50/50/50/5NOT RUN
owning-type-video-frame.tentative.any.serviceworker.html0/50/50/50/50/5NOT RUN
owning-type-video-frame.tentative.any.sharedworker.html0/50/50/50/50/5NOT RUN
owning-type-video-frame.tentative.any.worker.html0/50/50/50/50/5NOT RUN
owning-type.tentative.any.html0/50/50/50/50/5NOT RUN
owning-type.tentative.any.serviceworker.html0/50/50/50/50/5NOT RUN
owning-type.tentative.any.sharedworker.html0/50/50/50/50/5NOT RUN
owning-type.tentative.any.worker.html0/50/50/50/50/5NOT RUN
patched-global.any.html5/55/55/55/54/5NOT RUN
patched-global.any.serviceworker.html5/55/55/50/50/5NOT RUN
patched-global.any.sharedworker.html5/55/55/55/54/5NOT RUN
patched-global.any.worker.html5/55/55/55/54/5NOT RUN
read-task-handling.window.htmlPASSPASSPASSPASSPASSNOT RUN
reentrant-strategies.any.html10/1010/1010/1010/1010/10NOT RUN
reentrant-strategies.any.serviceworker.html10/1010/1010/100/100/10NOT RUN
reentrant-strategies.any.sharedworker.html10/1010/1010/1010/1010/10NOT RUN
reentrant-strategies.any.worker.html10/1010/1010/1010/1010/10NOT RUN
tee-detached-context-crash.htmlPASSPASSPASSPASSPASSNOT RUN
tee.any.html26/2626/2626/2626/2626/26NOT RUN
tee.any.serviceworker.html26/2626/2626/260/260/26NOT RUN
tee.any.sharedworker.html26/2626/2626/2626/2626/26NOT RUN
tee.any.worker.html26/2626/2626/2626/2626/26NOT RUN
templated.any.html91/9191/9191/9191/9191/91NOT RUN
templated.any.serviceworker.html91/9191/9191/910/910/91NOT RUN
templated.any.sharedworker.html91/9191/9191/9191/9191/91NOT RUN
templated.any.worker.html91/9191/9191/9191/9191/91NOT RUN