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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 / encoding-detection

Runs: Chrome 158.0.8110.0 (wpt@456f346c2, 2026-10-18) | Firefox 160.0a1 (wpt@b58866519, 2026-10-18) | Safari 254 preview (wpt@470a7adf8, 2026-10-18) | Ladybird 1.0-b284f (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
Total81.3%61/75100.0%75/7533.3%25/7566.6%50/7595.9%72/750.0%0/75
TestChromeFirefoxSafariLadybirdServoBlitz
Total81.3%61/75100.0%75/7533.3%25/7566.6%50/7595.9%72/75NO DATA
ar-ISO-8859-6-late.tentative.htmlFAILPASSFAILFAILPASSNOT RUN
ar-ISO-8859-6.tentative.htmlFAILPASSFAILPASSPASSNOT RUN
ar-windows-1256-late.tentative.htmlPASSPASSFAILFAILPASSNOT RUN
ar-windows-1256.tentative.htmlPASSPASSFAILPASSPASSNOT RUN
ca-windows-1252-late.tentative.htmlPASSPASSPASSPASSPASSNOT RUN
ca-windows-1252.tentative.htmlPASSPASSPASSPASSPASSNOT RUN
el-ISO-8859-7-late.tentative.htmlPASSPASSFAILFAILPASSNOT RUN
el-ISO-8859-7.tentative.htmlPASSPASSFAILPASSPASSNOT RUN
el-windows-1253-late.tentative.htmlFAILPASSFAILFAILPASSNOT RUN
el-windows-1253.tentative.htmlFAILPASSFAILPASSPASSNOT RUN
en-copyright-windows-1252.tentative.htmlPASSPASSPASSPASSPASSNOT RUN
en-euro-windows-1252.tentative.htmlPASSPASSPASSPASSPASSNOT RUN
en-windows-1252.tentative.htmlFAILPASSPASSPASSPASSNOT RUN
es-maria-windows-1252.htmlPASSPASSPASSPASSPASSNOT RUN
es-nuestra-senora-windows-1252.tentative.htmlPASSPASSPASSPASSPASSNOT RUN
es-number-one-windows-1252.tentative.htmlPASSPASSPASSPASSPASSNOT RUN
es-ordinal-windows-1252.htmlPASSPASSPASSPASSPASSNOT RUN
fa-windows-1256-late.tentative.htmlPASSPASSFAILFAILPASSNOT RUN
fa-windows-1256.tentative.htmlPASSPASSFAILPASSPASSNOT RUN
fi-windows-1252-late.tentative.htmlFAILPASSPASSPASSPASSNOT RUN
fi-windows-1252.tentative.htmlPASSPASSPASSPASSPASSNOT RUN
he-ISO-8859-8-late.tentative.htmlPASSPASSFAILFAILPASSNOT RUN
he-ISO-8859-8.tentative.htmlPASSPASSFAILPASSPASSNOT RUN
he-windows-1255-late.tentative.htmlPASSPASSFAILFAILPASSNOT RUN
he-windows-1255.tentative.htmlPASSPASSFAILPASSPASSNOT RUN
is-windows-1252-late.tentative.htmlPASSPASSPASSPASSPASSNOT RUN
is-windows-1252.tentative.htmlPASSPASSPASSPASSPASSNOT RUN
it-number-one-windows-1252.tentative.htmlPASSPASSPASSPASSPASSNOT RUN
it-ordinal-windows-1252.htmlPASSPASSPASSPASSPASSNOT RUN
it-roman-ordinal-windows-1252.htmlPASSPASSPASSPASSPASSNOT RUN
it-windows-1252-late.tentative.htmlPASSPASSPASSPASSPASSNOT RUN
it-windows-1252.tentative.htmlPASSPASSPASSPASSPASSNOT RUN
ja-EUC-JP-late.tentative.htmlFAILPASSFAILFAILPASSNOT RUN
ja-EUC-JP.tentative.htmlFAILPASSFAILPASSPASSNOT RUN
ja-ISO-2022-JP-late.tentative.htmlPASSPASSPASSPASSFAILNOT RUN
ja-ISO-2022-JP.tentative.htmlPASSPASSPASSPASSFAILNOT RUN
ja-Shift_JIS-late.tentative.htmlPASSPASSFAILFAILPASSNOT RUN
ja-Shift_JIS.tentative.htmlPASSPASSFAILPASSPASSNOT RUN
ja-half-width-late.tentative.htmlFAILPASSFAILFAILPASSNOT RUN
ja-half-width.tentative.htmlFAILPASSFAILPASSPASSNOT RUN
ko-EUC-KR-late.tentative.htmlPASSPASSFAILFAILPASSNOT RUN
ko-EUC-KR.tentative.htmlPASSPASSFAILPASSPASSNOT RUN
lt-windows-1257-late.tentative.htmlPASSPASSFAILFAILPASSNOT RUN
lt-windows-1257.tentative.htmlPASSPASSFAILPASSPASSNOT RUN
lv-windows-1257-late.tentative.htmlPASSPASSFAILFAILPASSNOT RUN
lv-windows-1257.tentative.htmlPASSPASSFAILPASSPASSNOT RUN
nbsp-even-windows-1252.tentative.htmlPASSPASSPASSPASSPASSNOT RUN
nbsp-odd-windows-1252.tentative.htmlPASSPASSPASSPASSPASSNOT RUN
pl-ISO-8859-2-late.tentative.htmlPASSPASSFAILFAILPASSNOT RUN
pl-ISO-8859-2.tentative.htmlPASSPASSFAILPASSPASSNOT RUN
pl-windows-1250-late.tentative.htmlPASSPASSFAILFAILPASSNOT RUN
pl-windows-1250.tentative.htmlPASSPASSFAILPASSPASSNOT RUN
pt-windows-1252-late.tentative.htmlPASSPASSPASSPASSPASSNOT RUN
pt-windows-1252.tentative.htmlPASSPASSPASSPASSPASSNOT RUN
ru-IBM866-late.tentative.htmlPASSPASSFAILFAILPASSNOT RUN
ru-IBM866.tentative.htmlPASSPASSFAILPASSPASSNOT RUN
ru-ISO-8859-5-late.tentative.htmlPASSPASSFAILFAILPASSNOT RUN
ru-ISO-8859-5.tentative.htmlPASSPASSFAILPASSPASSNOT RUN
th-windows-874-late.tentative.htmlPASSPASSFAILFAILPASSNOT RUN
th-windows-874.tentative.htmlPASSPASSFAILPASSPASSNOT RUN
tr-windows-1254-late.tentative.htmlPASSPASSFAILFAILPASSNOT RUN
tr-windows-1254.tentative.htmlPASSPASSFAILPASSPASSNOT RUN
uk-KOI8-U-late.tentative.htmlFAILPASSFAILFAILPASSNOT RUN
uk-KOI8-U.tentative.htmlFAILPASSFAILPASSPASSNOT RUN
uk-windows-1251-late.tentative.htmlPASSPASSFAILFAILPASSNOT RUN
uk-windows-1251.tentative.htmlPASSPASSFAILPASSPASSNOT RUN
utf-8.htmlPASSPASSPASSPASSFAILNOT RUN
vi-windows-1258-late.tentative.htmlFAILPASSFAILFAILPASSNOT RUN
vi-windows-1258.tentative.htmlFAILPASSFAILPASSPASSNOT RUN
yi-windows-1255-late.tentative.htmlPASSPASSFAILFAILPASSNOT RUN
yi-windows-1255.tentative.htmlPASSPASSFAILPASSPASSNOT RUN
zh-Big5-late.tentative.htmlPASSPASSFAILFAILPASSNOT RUN
zh-Big5.tentative.htmlPASSPASSFAILPASSPASSNOT RUN
zh-GBK-late.tentative.htmlPASSPASSFAILFAILPASSNOT RUN
zh-GBK.tentative.htmlPASSPASSFAILPASSPASSNOT RUN