Webcam Test
Check your webcam in the browser. Start the test, allow camera access, and you get a live preview plus the resolution, frame rate, and brightness your camera is really delivering. Nothing is recorded or uploaded.
The test asks for camera access and shows you exactly what your webcam sees — nothing is recorded or sent anywhere.
The video stays on this device. Stop the test or close the page and the camera switches off.
Face a window or lamp, and keep bright light out of the background. The brightness reading should sit mid-range.
Webcams halve their frame rate in dim rooms to lengthen the exposure. Below ~20 FPS, more light beats new hardware.
The feed renders locally in your browser — no recording, no upload. Stop the test and the camera light goes off.
A webcam fails at the worst moment — the interview, the client call, the exam proctor — because nothing exercises it between calls. An update swaps the driver, another app grabs the camera and never lets go, a privacy shutter stays shut, or the meeting app picks the wrong device. This test shows the same picture Zoom, Meet, or Teams will get: if the preview looks right, the camera, its driver, and the browser permission all work. It is also a fast hardware check when you buy a used laptop or set up an external webcam.
Press start and the browser hands the page a live video stream through the standard WebRTC camera API every video-call site uses. The camera’s name and reported frame rate come from the driver; the resolution and measured FPS are read off the frames as they arrive, so the two can disagree. That gap is revealing — many “1080p” webcams quietly negotiate 720p unless an app asks for more, and nearly every webcam halves its frame rate in dim light to lengthen the exposure, which is why a choppy picture is usually a lighting problem, not a hardware one.
What the numbers mean
| Reading | What it is | What to look for |
|---|---|---|
| Resolution | Width × height of the frames arriving right now | 1280×720 (720p) is fine for calls; 1920×1080 (1080p) is what most decent webcams advertise |
| Frame rate | Frames per second, measured from the live stream | 25–30 FPS looks smooth; below ~20, add light in front of you |
| Aspect ratio | The frame’s shape, reduced from the resolution | 16:9 on any modern webcam; 4:3 means an old or fallback mode |
| Megapixels | Resolution as one figure (width × height ÷ a million) | 0.9 MP is 720p, 2.1 MP is 1080p; a “4K” camera should show ~8.3 MP |
| Brightness | Average lightness of the current frame, sampled live | Mid-range is right; very low means backlit, very high means blown out |
Webcam not working?
| Cause | What you see | Fix |
|---|---|---|
| Browser permission blocked | The test fails instantly, or the prompt never appears | Click the camera icon in the address bar, allow access, and reload the page |
| Another app holds the camera | “Camera in use” error or a black frame — Zoom, Teams, and OBS often keep it open | Quit the other app (check the tray or menu bar), then try again |
| OS privacy setting | Every browser and app is blocked at once | Windows: Settings → Privacy & security → Camera. macOS: System Settings → Privacy & Security → Camera |
| Privacy shutter or kill switch | The stats look normal, but the picture is pure black | Slide the shutter open, or toggle the camera Fn key some laptops have |
| Wrong camera selected | A blank or frozen feed from a “virtual” camera left by OBS or a phone-link app | Pick the physical webcam in the camera dropdown above |
| Driver or USB fault | The camera is not listed at all | Replug an external webcam into another port; reinstall the driver, then restart |
Getting a better picture
Most “bad webcam” complaints are really bad lighting. The sensor is tiny and needs far more light than your eyes do: face a window or a lamp, never sit with one behind you (a bright background forces the camera to darken your face into a silhouette), and watch the brightness reading settle mid-range. Raise the camera to eye level so the lens is not looking up your chin, then take a snapshot to check — it saves the un-mirrored view, which is what everyone else on the call sees. Mounting a webcam on a monitor? The Monitor Center Finder marks the exact middle of the screen so the camera sits dead center.