All browser hardware tests

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

Phone body tests

1 tools

Phone Vibration Test: Request One Short PulseRequest one short phone-body pulse and separate the browser reply from what you felt.No permission needed

MIDI input tests

1 tools

MIDI Input Test: Check Notes, Velocity and ReleaseCheck whether one MIDI input sends notes, releases and control changes to this browser.midi required

Mouse tests

8 tools

Mouse testCheck buttons, wheel direction, click count and pointer response.No permission needed Mouse Polling Rate Test and Browser Hz CheckerEstimate browser-observed pointer event frequency with an error range.No permission needed Mouse double click testCollect a longer click sample and isolate unintended duplicates.No permission needed Mouse latency testMeasure click-to-paint timing with browser scheduling included.No permission needed Mouse Scroll Test for Wheel Direction and ReversalsCount wheel steps in both directions and catch skipped or reversed scrolls.No permission needed Mouse Button Test: Check Each Press and ReleaseSee which mouse button you pressed and count every press and release.No permission needed Mouse DPI testEstimate browser pointer movement per inch using a measured ruler distance.No permission needed Mouse drag testRecord press, movement, release and cancelled pointer events during a sustained drag.No permission needed

Keyboard tests

4 tools

Keyboard testVerify physical keys, layouts, rollover and release events.No permission needed Keyboard latency testMeasure key-to-paint timing over a bounded sample.No permission needed Keyboard polling rate testInspect browser key-repeat intervals and learn how to check real keyboard polling.No permission needed Keyboard chatter testLog presses and releases while counting held-key repeats separately from short second presses.No permission needed

Speed and timing tests

4 tools

CPS testThis is a speed test, not a fault check. Measure click rate, consistency, local history and shareable results.No permission needed Right click CPS testRun the CPS timer with the context menu suppressed.No permission needed Spacebar CPS testMeasure repeated spacebar presses with the same CPS clock.No permission needed Kohi click testRun a Kohi style click speed test for Minecraft PvP practice.No permission needed

Controller tests

4 tools

Controller and gamepad testCheck buttons, sticks, triggers and neutral dead zones.No permission needed Stick drift testLeave the sticks untouched and read the resting offset, drift direction and dead zone.No permission needed Controller polling rate testObserve positive gamepad timestamp intervals at browser display-frame sampling.No permission needed Controller vibration testRequest short weak, strong and combined rumble; compare replies with what you feel.No permission needed

Screen tests

7 tools

Screen test for dead and stuck pixelsInspect fullscreen patterns and record visible defect coordinates.No permission needed Screen bleeding testUse a controlled dark pattern to inspect uneven backlight areas.No permission needed OLED screen testInspect solid colours for uneven brightness and image retention.No permission needed Monitor refresh rate testMeasure the refresh rate this browser observes in the current window.No permission needed Touch screen testPaint the grid with your finger to find dead touch areas and count touch points.No permission needed Stuck pixel fixerFlash a small colour cycling patch over a stuck pixel, after a seizure warning.No permission needed GPU checker: browser driver informationRead the WebGL driver vendor and renderer this browser exposes, with sources and limits.No permission needed

Audio tests

3 tools

Sound testCheck left and right audio channels and play test tones.No permission needed Speaker testCheck your left and right speakers one at a time.No permission needed Headphone testCheck left and right channels, sweep low to high frequencies and confirm phase.No permission needed

Camera and mic tests

2 tools

Mic testInspect input level, clipping, silence gaps and a local recording.microphone required Webcam testPreview the negotiated camera stream and inspect its delivered mode.camera required

How to choose a testStart with the device check, then narrow down the signal.Read guide

This directory holds 34 free online hardware tests, split into 7 everyday device checks and 27 focused diagnostics and speed tests. 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 83 browser hardware guides cover the same ground in prose, and how to test a mouse before you replace it is the usual starting point.