# Webcam test

> Check your webcam in the browser: live preview, real resolution, measured frame rate, camera picker, mirror and snapshot. Nothing is recorded or uploaded.

URL: https://tools.cuelark.com/webcam-test
Publisher: Cuelark Team (https://cuelark.com)
Updated: 2026-11-10
Price: free, no sign-up
Privacy: runs in the browser; files are not uploaded

Press Start to see your camera, the resolution it really delivers and the frame rate measured frame by frame. Ask for 720p, 1080p or 4K to find what the camera supports, and switch between cameras.

## How to use it

1. Press Start webcam test and allow the camera.
2. Read the resolution and measured fps; try 720p, 1080p and 4K to see what the camera supports.
3. Switch cameras from the list, and save a snapshot if you want to compare.

## Details

- **Resolution:** What the camera actually delivers for the requested 480p, 720p, 1080p or 4K (browsers fall back to the nearest supported mode)
- **Frame rate:** Counted from frames the page receives each second, next to the rate the camera reports
- **Controls:** Camera picker, mirror view, snapshot as JPG (saved only to your device)

## Questions

### Is anything recorded or sent?

No. The page reads the device inside this tab and shows the result. Nothing is stored or uploaded; close the tab or press Stop and access ends.

### My 1080p webcam shows 640×480.

Some cameras only deliver full HD over USB 3 or in good light, and some apps hold the camera in a lower mode. Close other video apps, connect directly instead of through a hub, and choose 1080p again.

### Why is the frame rate low?

Most webcams cut the frame rate in dim rooms to get a brighter picture. Add light in front of you. USB bandwidth and a busy CPU can also lower it.

### The picture is black.

Check for a privacy shutter or a camera kill key (often F8, F10 or a key with a camera icon), and in Windows check Settings → Privacy & security → Camera. If another app is using the camera, close it.

### Why is my image mirrored?

Previews are usually mirrored so they feel like a mirror. Others in a call see the unmirrored image. Turn Mirror off to see what they see.

## Related tools

- [Microphone test](https://tools.cuelark.com/mic-test)
- [Keyboard tester](https://tools.cuelark.com/keyboard-test)
- [Dead pixel test](https://tools.cuelark.com/dead-pixel-test)
- [Passport size photo print sheet](https://tools.cuelark.com/photo-print-sheet)