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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 / webusb

Spec: WebUSB API ↗

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
Total80.7%682/8459.4%80/8459.4%80/8459.2%78/8459.1%77/8450.0%0/845
getDevices100.0%2/20.0%0/20.0%0/20.0%0/20.0%0/20.0%0/2
requestDevice50.0%1/20.0%0/20.0%0/20.0%0/20.0%0/20.0%0/2
TestChromeFirefoxSafariLadybirdServoBlitz
Total80.7%679/8419.5%80/8419.5%80/8419.2%78/8419.1%77/841NO DATA
idlharness.https.any.html198/27923/27923/27923/27923/279NOT RUN
idlharness.https.any.worker.html197/27823/27823/27823/27823/278NOT RUN
insecure-context.any.html14/1414/1414/1414/1414/14NOT RUN
insecure-context.any.worker.html14/1414/1414/1414/1414/14NOT RUN
protected-interface-classes.https.any.html7/70/70/70/70/7NOT RUN
protected-interface-classes.https.any.worker.html7/70/70/70/70/7NOT RUN
usb-allowed-by-permissions-policy-attribute-redirect-on-load.https.sub.html4/41/41/41/40/4NOT RUN
usb-allowed-by-permissions-policy-attribute.https.sub.html5/50/50/50/50/5NOT RUN
usb-allowed-by-permissions-policy.https.sub.html6/60/60/60/60/6NOT RUN
usb-default-permissions-policy.https.sub.html3/31/31/31/31/3NOT RUN
usb-disabled-by-permissions-policy.https.sub.html7/72/72/72/72/7NOT RUN
usb-garbage-collection.https.window.htmlPASSFAILFAILFAILFAILNOT RUN
usb-supported-by-permissions-policy.htmlPASSFAILFAILFAILFAILNOT RUN
usb.https.any.html4/40/40/40/40/4NOT RUN
usb.https.any.worker.html4/40/40/40/40/4NOT RUN
usb.https.window.html7/70/70/70/70/7NOT RUN
usb.serviceworker.https.html2/22/22/20/20/2NOT RUN
usbAlternateInterface.https.any.html2/20/20/20/20/2NOT RUN
usbAlternateInterface.https.any.worker.html2/20/20/20/20/2NOT RUN
usbConfiguration.https.any.html2/20/20/20/20/2NOT RUN
usbConfiguration.https.any.worker.html2/20/20/20/20/2NOT RUN
usbConnectionEvent.https.any.html2/20/20/20/20/2NOT RUN
usbConnectionEvent.https.any.worker.html2/20/20/20/20/2NOT RUN
usbDevice-iframe.https.html3/30/30/30/30/3NOT RUN
usbDevice-same-objecct.https.any.htmlPASSFAILFAILFAILFAILNOT RUN
usbDevice-same-objecct.https.any.worker.htmlPASSFAILFAILFAILFAILNOT RUN
usbDevice-worker.https.htmlPASSFAILFAILFAILFAILNOT RUN
usbDevice.https.any.html65/650/650/650/650/65NOT RUN
usbDevice.https.any.worker.html65/650/650/650/650/65NOT RUN
usbEndpoint.https.any.html2/20/20/20/20/2NOT RUN
usbEndpoint.https.any.worker.html2/20/20/20/20/2NOT RUN
usbInTransferResult.https.any.html4/40/40/40/40/4NOT RUN
usbInTransferResult.https.any.worker.html4/40/40/40/40/4NOT RUN
usbInterface.https.any.html4/40/40/40/40/4NOT RUN
usbInterface.https.any.worker.html4/40/40/40/40/4NOT RUN
usbIsochronousInTransferPacket.https.any.html4/40/40/40/40/4NOT RUN
usbIsochronousInTransferPacket.https.any.worker.html4/40/40/40/40/4NOT RUN
usbIsochronousInTransferResult.https.any.html3/30/30/30/30/3NOT RUN
usbIsochronousInTransferResult.https.any.worker.html3/30/30/30/30/3NOT RUN
usbIsochronousOutTransferPacket.https.any.html3/30/30/30/30/3NOT RUN
usbIsochronousOutTransferPacket.https.any.worker.html3/30/30/30/30/3NOT RUN
usbIsochronousOutTransferResult.https.any.html2/20/20/20/20/2NOT RUN
usbIsochronousOutTransferResult.https.any.worker.html2/20/20/20/20/2NOT RUN
usbOutTransferResult.https.any.html3/30/30/30/30/3NOT RUN
usbOutTransferResult.https.any.worker.html3/30/30/30/30/3NOT RUN