Online device tests
Six quick tests for the things that let you down most often: the microphone in a call, the webcam, keyboard, mouse, screen and headphones. Each takes about a minute and tells you what to do if something is wrong.
The tests run right in your browser: sound, video and keystrokes are never sent or stored. The browser asks for microphone or camera access only after you press the start button.
Pick a test
Microphone
Live level, background noise and a 5-second recording to play back.
Test now →Webcam
Live preview, real resolution and frame rate, lighting check.
Test now →Keyboard
Every key, sticky keys and simultaneous presses (ghosting).
Test now →Mouse
Buttons, wheel, double click, polling rate and cursor drift.
Test now →Dead pixels
Full-screen colours to find dead, hot and stuck pixels.
Test now →Headphones and stereo
Left and right channels, frequency sweep, phase and balance.
Test now →