Test every device you plug into your PC
Keyboard, mouse, microphone, webcam, speakers, monitor, controller and printer tests that run right here in your browser. Free, with nothing to install.
Pick a device
Tests and fix guides for everything you can connect to a computer, from keyboards to printers.
- Keyboard tester
- Spacebar counter
- Spacebar clicker
- Keyboard latency test
- Keyboard ghosting test
- Keyboard sound test
- Gamepad tester
- Controller tester
- Stick drift test
- Controller vibration test
- Xbox controller tester
- PS5 controller tester
- Printer test page
- Color printer test page
- Epson printer test page
- 3D printer calibration
- Hp printer test page
- Printer test page PDF
Popular tests
The tests people search for most, each one ready the moment the page loads.
Keyboard Tester
Find dead, stuck and double-typing keys on any keyboard.
Mic Test
Hear your mic, check its level, noise and clipping, and get a fix for each problem.
Webcam Test
See the real resolution, frame rate, light and noise of any webcam, with fixes for a black or blurry picture.
Dead Pixel Test
Fill the screen with pure colors, find dead and stuck pixels, and map them for a warranty claim.
CPS Test
Count your clicks per second with a live graph, ranks and personal bests.
Left Right Audio Test
Hear left and right named from each side, then check balance, polarity and mono.
Something not working?
Start with the fault. Each guide walks through the likely causes and fixes, then opens the right test so you can confirm it worked.
Browse 36 fix guidesYour camera, microphone and keystrokes stay on your device.
Every test runs inside this browser tab. Nothing is uploaded or stored on a server, and there is nothing to sign up for.
Works in Chrome, Edge, Firefox and Safari on Windows, Mac, Linux, Android and iPhone.