Every key.
Every click.
Checked.

Free tests for your keyboard, mouse, screen, webcam and mic, right in your browser. A plain answer in seconds, and nothing leaves your device.

Test my keyboard Test my mouse
Keyboard test Dead keys, key chatter and how many keys work at once. Mouse test Every button, the scroll wheel, double clicks and polling rate. Click speed test Your clicks per second over 1 to 60 seconds. Monitor test Dead pixels, backlight bleed, banding and refresh rate. Mic test Levels, playback, background noise and a left/right speaker check. Webcam test Picture, resolution and real frame rate.

Private by design

Every test runs inside your browser. Nothing you press, say or show the camera is uploaded or stored.

Plain answers

Each test tells you in a sentence whether something's wrong, and what to try before you buy a replacement.

Free, without the clutter

No sign-up, no downloads and no ads in the way of the test.