How to test your webcam
- Press Start webcam test and choose Allow when your browser asks to use the camera.
- You should see yourself in the preview. The status confirms the camera is working.
- If you have several cameras (built-in and USB, or front and back on a phone), switch between them with the Camera list.
- Check the readings below the picture, and press Save a snapshot if you want a still photo. It downloads straight to your device.
What the numbers mean
- Resolution is the size of the picture your camera is actually sending, for example 1280 × 720 (720p) or 1920 × 1080 (1080p). We ask for up to 1080p; if you see less, that is the most your camera (or its current mode) offers.
- Frame rate is measured live, in frames per second. Around 30 fps looks smooth. In dim light many webcams drop to 15 fps or less to let in more light, which looks jerky, so turning on a lamp often helps. Our white screen makes a handy face light.
- Aspect ratio is the shape of the picture: 16:9 is widescreen, 4:3 is squarer.
The preview is mirrored by default, as most video-call apps show you to yourself like a mirror. Untick Mirror image to see what others see.
Camera not working? Try this
- Permission blocked: click the camera or padlock icon in the address bar, allow the camera and reload.
- Camera busy: close Zoom, Teams, Skype and other apps that might be using it, then try again. On Windows only one app can usually use a webcam at a time.
- Black picture: check for a privacy shutter or slider over the lens, or a keyboard key with a camera symbol that turns it off.
- Windows: check Settings → Privacy & security → Camera allows apps and your browser.
- Mac: check System Settings → Privacy & Security → Camera and allow your browser.
- USB webcam: try another USB port, ideally directly on the computer rather than through a hub.
Private by design
The camera picture never leaves your device. It is shown in your browser only, snapshots are saved locally, and the camera switches off when you press Stop or close the page.