How to test your webcam
Run the test
Click Start and allow camera access when your browser asks. Nothing is requested until you click. If you have more than one camera, such as a laptop camera and a USB webcam, choose it from the list; switching restarts the preview on that camera.
Press Take photo to capture a single frame, then download it if you want to compare it later. Click Stop to turn the camera off; its light should go out.
Read the results
Resolution is the size of the frames your camera is actually sending to the browser. This test asks for up to 1920 × 1080; the camera and browser pick the closest mode they support, so a 720p camera shows 1280 × 720.
Frame rate is measured from the frames arriving in the preview. Cameras often drop to a lower rate in dim light to get a brighter picture, so add light if the number falls. Where the browser cannot count frames, the rate the camera reports is shown instead.
Megapixels is width × height divided by one million, so 1920 × 1080 is 2.1 MP and 1280 × 720 is 0.9 MP.
Brightness is the average light level of the picture; if it reads "Dark, add light", face a window or lamp rather than sitting with it behind you. Average color shows a strong tint at a glance, such as an orange cast under warm bulbs.