An online webcam test that shows what your camera really delivers
The Webcam Test checks in seconds whether your camera works, then shows exactly what it is sending: the real resolution, aspect ratio, reported and measured frame rate, and the highest resolution the camera says it supports. You can mirror the preview, take a full-resolution snapshot and record a short test clip to play back.
Use it before a job interview, an online class, a client call or a live stream, when a new USB webcam arrives, or when a video app shows a black box and you need to know whether the camera or the app is at fault. It works with built-in laptop cameras, USB webcams, phone cameras and virtual cameras.
Everything runs inside your browser. The video never leaves your device, nothing is recorded unless you press record, and snapshots or clips are only saved if you choose to download them.
How to use the Webcam Test
- Press Start camera and choose Allow when your browser asks for camera permission.
- If you have more than one camera, pick it from the Camera list. Choose a Requested resolution — 480p, 720p, 1080p or 4K — to see which modes it supports.
- Read the result panel: delivered resolution, measured frame rate, reported frame rate, aspect ratio, megapixels and maximum resolution. The details list below adds focus, exposure and zoom support.
- Press Mirror to flip the preview, Take snapshot for a PNG, or Record test clip for a 3–10 second clip you can replay. Tick Include microphone to check sound at the same time.
- Press Stop camera when you are finished. The camera light should switch off straight away.
Webcam Test features
Real resolution, not the box
Shows the frame size the camera is actually sending right now, next to the maximum it reports, so you can see if a “1080p” webcam is stuck at 720p.
Measured frame rate
Frames are counted as they arrive, revealing drops from 30 to 15 fps caused by dim light, USB bandwidth or a busy computer.
Resolution presets
Request 480p, 720p, 1080p or 4K and switch while the camera runs. The browser picks the closest mode the camera supports.
Snapshot and test clip
Save a full-resolution PNG, or record a short clip with optional microphone sound and play it back on the page before downloading.
Black-picture warning
If frames arrive but are completely dark, the test tells you — usually a privacy shutter, lens cover or camera-off key.
Fixes for your setup
When access fails, the exact error is explained with steps for your browser and operating system.
What the webcam numbers mean
Resolution is the width × height of each frame in pixels. 1280×720 (720p) is plenty for most video calls; 1920×1080 (1080p) looks sharper on large screens and recordings. Megapixels is simply width × height ÷ 1,000,000, so 1080p is about 2.1 MP.
Reported frame rate is what the camera driver says it is set to. Measured frame rate is how many frames per second actually reach the browser. When the measured value is clearly lower, the camera is struggling — usually because of low light, when many webcams lengthen the exposure and halve their frame rate.
Aspect ratio is the shape of the picture: 16:9 for widescreen HD modes, 4:3 for the older 640×480 mode. Max resolution comes from the camera’s reported capabilities; Firefox and Safari report fewer details than Chrome or Edge.
| Name | Resolution | Aspect ratio | Megapixels |
|---|---|---|---|
| VGA (480p) | 640 × 480 | 4:3 | 0.3 MP |
| HD (720p) | 1280 × 720 | 16:9 | 0.9 MP |
| Full HD (1080p) | 1920 × 1080 | 16:9 | 2.1 MP |
| QHD (1440p) | 2560 × 1440 | 16:9 | 3.7 MP |
| 4K UHD (2160p) | 3840 × 2160 | 16:9 | 8.3 MP |
Webcam not working? A troubleshooting guide
- Permission blocked: allow the camera from the icon at the left of the address bar, then reload. On Windows also check Settings → Privacy & security → Camera; on a Mac, System Settings → Privacy & Security → Camera.
- No camera found: reconnect the USB cable, try another port, and look for a camera on/off key or privacy switch. On Windows, make sure the camera is enabled in Device Manager.
- Camera busy: close video-call apps, streaming software and other tabs using the camera. Most webcams on Windows work with only one app at a time.
- Black picture: slide open the privacy shutter, remove any lens cover, and check the room is not completely dark.
- Low frame rate or grainy image: add light in front of you, plug the webcam directly into the computer instead of a hub, and close heavy programs.
- Wrong camera: choose the right one in the Camera list — virtual cameras from streaming apps often appear first.
Tips for a better picture on video calls
- Face a window or lamp; light from behind turns you into a silhouette.
- Raise the camera to eye level and sit about an arm’s length away.
- Wipe the lens — fingerprints cause the soft, hazy look that many people blame on the camera.
- Check your connection with the Internet Speed Test; calls drop to low resolution when upload speed is short.
- Test your microphone and speakers too, so the whole call setup is ready.
Webcam Test FAQ
Is this webcam test private?
Yes. The video stays in your browser and is never uploaded. Nothing is recorded unless you press “Record test clip”, and snapshots and clips are only saved to your device if you click download.
Why does my 1080p webcam show 720p or 640×480?
The browser asks for the resolution you choose, and some cameras fall back to a lower mode with long USB cables, unpowered hubs or USB 2.0 ports, or when another app has set them up. Choose 1080p in “Requested resolution” and check “Max resolution”. If the maximum is 1280×720, the camera is really a 720p model.
Why is the measured frame rate lower than 30 fps?
Most webcams automatically drop to around 15 fps in dim light so each frame gets more exposure. Add light in front of you and the rate usually returns to 30 fps. A busy computer or USB hub can also cost frames.
How do I test my webcam on an iPhone or Android phone?
Open this page in Safari or Chrome on the phone, press “Start camera” and allow access. Use the Camera list to switch between the front and rear cameras.
Why is my picture mirrored?
The preview is mirrored by default because that feels natural, like looking in a mirror. Other people on a call see you the right way round. Press “Mirror” to switch it off; snapshots follow the setting you choose.
Can I test a virtual camera or capture card?
Yes. Any device the operating system lists as a camera — virtual cameras from streaming software, capture cards and document cameras — appears in the Camera list and can be tested the same way.