probekits

All browser hardware tests

Find the focused check for the device signal you need to verify. Every test runs locally in your browser.

Core tests

6 tools
Mouse testCheck buttons, wheel direction, click count and pointer response.No permission neededKeyboard testVerify physical keys, layouts, rollover and release events.No permission neededWebcam testPreview the negotiated camera stream and inspect its delivered mode.camera requiredMicrophone testInspect input level, clipping, silence gaps and a local recording.microphone requiredSound testCheck left and right audio channels and play test tones.No permission neededCPS testThis is a speed test, not a fault check. Measure click rate, consistency, local history and shareable results.No permission needed

Specialised diagnostics

12 tools
Mouse polling rate testEstimate browser-observed pointer event frequency with an error range.No permission neededMouse double click testCollect a longer click sample and isolate unintended duplicates.No permission neededMouse latency testMeasure click-to-paint timing with browser scheduling included.No permission neededKeyboard latency testMeasure key-to-paint timing over a bounded sample.No permission neededKeyboard repeat rate testInspect browser key-repeat intervals with an explicit margin of error.No permission neededSpeaker testCheck your left and right speakers one at a time.No permission neededScreen testInspect fullscreen patterns and record visible defect coordinates.No permission neededScreen bleeding testUse a controlled dark pattern to inspect uneven backlight areas.No permission neededOLED screen testInspect solid colours for uneven brightness and image retention.No permission neededGamepad testCheck buttons, sticks, triggers and neutral dead zones.No permission neededRight click CPS testRun the CPS timer with the context menu suppressed.No permission neededSpacebar CPS testMeasure repeated spacebar presses with the same CPS clock.No permission needed

This directory holds 18 free online hardware tests, split into 6 everyday device checks and 12 focused diagnostics. Everything runs in the browser tab you already have open: there is no installer, no extension, no account, and no measurement leaves your device.

Start with the everyday check that matches the device — a mouse test, a keyboard test, a webcam test, a mic test, a sound test, a screen test or a gamepad test. Each one opens with a plain verdict and links onward to the narrower diagnostics when the first result is not conclusive: polling rate and double-click checks under the mouse, latency and repeat-rate checks under the keyboard, backlight bleed and OLED checks under the screen.

Speed tools sit in the same directory but answer a different question. A CPS test, a right click CPS test and a spacebar CPS test measure how fast you can click, not whether a switch is failing. When you want a longer explanation before running anything, the 14 browser hardware guides cover the same ground in prose, and how to test a mouse before you replace it is the usual starting point.