New tool: Camera Test

Click Turn on camera and your webcam feed appears instantly in the browser, so you can check the resolution, frame rate, and brightness it’s actually capturing, plus whether your microphone is picking up sound, all on one screen. If you have more than one camera connected, switch between them right from the list, and turning on Mirrored makes your own preview easier to look at while the other side of a call always sees the natural, unmirrored view. You can save what you see as a screenshot, and everything is processed entirely in your browser, so video and audio are never sent to a server.

Try the Camera Test