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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 / fetch / api

Spec: Fetch ↗

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 1.0-1706f (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
Total97.1%7810/803995.9%7710/803996.9%7790/803974.5%5994/803975.9%6104/80390.0%0/8039
abort98.2%333/33985.2%289/33987.0%295/33948.3%164/33970.7%240/3390.0%0/339
basic96.4%1420/147396.3%1419/147396.6%1423/147375.4%1112/147371.2%1049/14730.0%0/1473
body100.0%102/10260.7%62/10260.7%62/10256.8%58/10286.2%88/1020.0%0/102
cors89.0%699/78599.2%779/78599.2%779/78594.6%743/78585.7%673/7850.0%0/785
crashtests100.0%7/7100.0%7/785.7%6/785.7%6/757.1%4/70.0%0/7
credentials100.0%56/56100.0%56/5692.8%52/5675.0%42/5675.0%42/560.0%0/56
headers100.0%1043/1043100.0%1043/104399.6%1039/104375.7%790/104364.3%671/10430.0%0/1043
policies95.2%20/2195.2%20/2195.2%20/2157.1%12/2157.1%12/210.0%0/21
redirect98.7%944/95699.5%952/95698.9%946/95687.6%838/95686.9%831/9560.0%0/956
request98.8%1663/168298.8%1663/168297.8%1645/168263.0%1060/168276.9%1294/16820.0%0/1682
response94.4%890/94288.0%829/94298.9%932/94275.7%714/94276.7%723/9420.0%0/942
TestChromeFirefoxSafariLadybirdServoBlitz
Total100.0%633/63393.3%591/63393.3%591/63371.8%455/63375.3%477/633NO DATA
idlharness.https.any.html165/165147/165147/165151/165165/165NOT RUN
idlharness.https.any.serviceworker.html156/156148/156148/1560/1560/156NOT RUN
idlharness.https.any.sharedworker.html156/156148/156148/156152/156156/156NOT RUN
idlharness.https.any.worker.html156/156148/156148/156152/156156/156NOT RUN