Answer: Run the suite above — it checks your screen, sensors, battery, camera and audio hardware live, all in the browser.
Test your camera, mic and speakers before your next call — free, private, nothing uploaded.
Going into an interview, stand-up or client call? Run the trio in order — it takes about a minute:
If all three pass, your meeting app will work. If one fails, each test page includes troubleshooting steps for the most common causes (permissions, exclusive device locks, privacy shutters).
You can test your webcam, microphone, speakers or headphones, keyboard, screen for dead pixels, touch input, GPS, accelerometer, and browser capabilities. Each test runs locally in your browser with nothing uploaded.
A black camera preview usually means another app is using the camera, permission was denied, or a privacy shutter is closed. Close other video apps (Zoom, Teams, browser tabs), re-grant camera permission from the address bar, and reload the page.
Allow microphone access, then speak — the live level meter should bounce with your voice. Record a short clip and play it back through your speakers to confirm both capture and output. If the meter stays flat, check that the correct input device is selected in your OS sound settings.
Yes. Camera, microphone, speaker, touch, GPS, and accelerometer tests all work on modern mobile browsers. Keyboard testing is most useful on laptops and external keyboards; screen dead-pixel tests benefit from full-screen mode on any device.
Every test on this page runs entirely in your browser using standard web APIs — getUserMedia for camera and microphone, the Web Audio API for playback, the Fullscreen API for screen tests. There is no account, no upload and no server-side processing: audio and video never leave your device, and closing a tab releases the hardware immediately.
Is it really private? Yes. The camera and mic tests only render your stream locally so you can see and hear it yourself. Nothing is recorded to disk or sent over the network — you can watch the browser's camera/mic indicator disappear the moment you press Stop.
Why does my browser ask for permission? Browsers require an explicit grant before any page can access a camera or microphone. You only need to allow it once per site; if you deny it by accident, click the lock icon in the address bar and change the Camera or Microphone setting to Allow.
Do these work on phones? Camera, mic, speaker, screen and browser tests all work on mobile browsers. The keyboard test needs a physical keyboard, so it's best on a laptop or desktop.