Webcam Test
Check your camera works: live preview, real resolution and measured frame rate. Your work stays on this device whenever possible.
How to use Webcam Test
- Press "Start camera" and allow camera access when the browser asks.
- If you have more than one camera, pick it in the Camera list; names appear after the first permission.
- Use "Ask for resolution" to request HD, Full HD or 4K and see what the camera really delivers.
- Read Actual resolution and Measured frame rate once the two-second count finishes.
- Press "Take snapshot (PNG)" to save a still, then "Stop" to switch the camera off.
Worked example
A laptop with a built-in camera, tested with "Ask for resolution" set to 1920 x 1080: the page shows Actual resolution 1280 x 720, aspect ratio 16:9 and a measured 29.8 fps. That tells you the camera tops out at 720p, whatever the meeting app claims.
When to use this tool
- Checking a webcam before a job interview or online exam.
- Confirming which resolution a new USB camera really delivers.
Important limitations
Needs a browser that allows camera access on this page. Measured frame rate depends on lighting and USB bandwidth; nothing is recorded unless you press the snapshot button.
Frequently asked questions
Why does it say permission was blocked?
The browser remembers a refusal per site. Click the camera icon in the address bar, allow access for this page, and press Start camera again. On Windows and macOS the operating system can also block browsers from the camera in its privacy settings.
What is the difference between measured and reported frame rate?
Reported is what the camera driver says it is set to. Measured counts the frames that actually reached the page over two seconds. In low light many webcams slow down to expose longer, so measured can be well below 30.
Why can't I get 1080p even though my camera box says Full HD?
The browser asks for the resolution you pick and the camera answers with the closest mode it supports. USB bandwidth, a busy hub or another app using the camera can force a lower mode. The page shows the real result.
Is my video recorded or uploaded?
No. The live stream is shown in this tab only and stops when you press Stop or leave. A snapshot is created only when you press the button, and it goes straight to your downloads folder.
The camera works here but not in Zoom or Teams. Why?
Only one app can usually use a webcam at a time, and each app has its own permission and device choice. Close this tab, then pick the same camera inside the other app's video settings.