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Webcam test: check your camera online

Check that your camera works before a call: live preview, resolution and frame rate, camera picker, mirror view and snapshot. Nothing is recorded.

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Before a video interview, a class or a call, it helps to know that your camera works, which camera the browser picks, and how good the picture is. This test asks for camera permission only when you click Start, then shows a live preview with the details the browser reports for the video track: the resolution actually delivered, the frame rate, the maximum resolution the camera supports, which way it faces and its device name.

The frame rate is also measured from the frames that really arrive, which reveals when a camera drops to 15 fps in low light or over a busy USB hub. You can switch between cameras, request 720p, 1080p or 4K to see what the camera can deliver, mirror the preview the way most call apps show you, and take a snapshot to check framing and lighting.

The video never leaves your device: there is no recording and no upload. Snapshots are created only when you click and saved only if you download them.

How to use it

  1. Click Start camera and allow access when the browser asks.
  2. Pick a camera from the list if you have more than one, and try a higher resolution if you want to see the maximum.
  3. Check the preview and the details: delivered resolution, reported and measured frame rate.
  4. Take a snapshot to check lighting and framing, then click Stop camera when you are done.

Frequently asked questions

Is my video recorded or uploaded?

No. The stream is displayed on this page only. Snapshots stay in your browser unless you download them, and the camera stops when you click Stop or leave the page.

Why is the resolution lower than my camera's specification?

Browsers start with a modest default. Choose 1080p or 4K in "Requested resolution" to ask for more; the camera delivers the closest mode it supports. Some laptop cameras advertise a still-photo resolution that video cannot reach.

Why is the measured frame rate lower than reported?

Many webcams lower the frame rate automatically in dim light to get a brighter image. More light usually brings it back to 30 fps. USB bandwidth and a busy computer can also reduce it.

The camera shows a black screen or an error. What should I check?

Look for a physical privacy shutter or a camera key on the keyboard, close apps that might be using the camera (Teams, Zoom, other browser tabs), and check that the browser has camera permission in your system privacy settings.

Does the mirror option affect what others see?

No. Mirroring only flips the preview on this page (and the snapshot, if on). Call apps send the unmirrored image, so text behind you reads correctly for others.

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