Free device tools
Check that your hardware works, and record your screen, straight from the browser.
Screen Recorder
Record your screen and download the video. No install, no account.
Webcam Test
See your live camera feed, check its resolution, take a snapshot.
Microphone Test
A live level meter shows whether your microphone is picking up sound.
Keyboard Test
Press keys and see them light up — spot a dead key in seconds.
Popular shortcuts
Before a video call, after buying a second-hand laptop, when a colleague says they can’t hear you: these tests answer the question in seconds, without installing anything.
Camera and microphone access stays in the page — nothing is recorded or uploaded unless you record your screen yourself, and even then the recording stays in your browser until you download it.
Frequently asked questions
Why does the browser ask for permission?
Camera, microphone and screen access always require your explicit permission. You can revoke it from the padlock icon in the address bar.
Is anything recorded?
Only when you use the screen recorder, and the recording stays on your device until you download it.
Do these work on phones?
The webcam, mic, speaker, dead-pixel and screen tests do. Screen recording depends on the browser, and desktop is the reliable option.