What this webcam test checks
Press start and your browser asks to use the camera. Once you allow it, you see the live picture and four readings: the resolution the camera is actually sending, the frame rate measured from the frames as they arrive, the most the camera says it can do, and a light check. It all runs on this page, and the camera turns off when you press Stop or leave.
“Camera max” comes from the camera itself, through the browser. Chrome and Edge report it; some browsers don’t, and then we say so rather than guess. Use “Ask the camera for” to request 720p, 1080p or 4K at 30 or 60 fps and see what really arrives.
How to read the camera test
- Resolution. 1080p (1920 × 1080) is the norm for a good webcam today, and 720p is fine for most calls. Many laptop cameras send 720p or less.
- Frame rate. 30 fps looks smooth for a talking head. 60 fps makes fast movement smoother, which matters more for streaming than for meetings. A reading well below what you asked for usually means low light or a busy USB connection.
- Light. We sample the picture twice a second and compare the middle, where your face usually is, with the edges. Too dark, light behind you and blown-out highlights each get their own note.
- Snapshot. A full-resolution still, saved as a PNG. Zoom in on it: soft edges and smeared detail show what the camera really captures, which a small preview hides.
Why a webcam looks worse in low light
In a dim room a webcam keeps each frame open longer to collect light. That can cut the frame rate, sometimes to half, and it turns up the gain, which adds grain and smudges detail. The fix is light, not settings: face a window, or put a lamp or key light in front of you, a little above eye level.
Light from behind, like a window at your back, turns your face into a silhouette, because the camera exposes for the bright background. If the light check says “too dark” or “backlit”, the light finder has key lights and monitor light bars for exactly that.
Camera not working? Fix it step by step
- Allow it in the browser. Chrome: click the site controls icon at the left of the address bar and switch Camera on. Edge: click the lock icon, then Permissions for this site. Firefox: click the crossed-out camera icon in the address bar and clear the block. Safari on a Mac: Safari > Settings for this website > Camera > Allow.
- Allow it in the system. Windows 11: Settings > Privacy & security > Camera, then turn on Camera access and Let desktop apps access your camera. macOS: System Settings > Privacy & Security > Camera, switch on your browser, then quit and reopen it.
- Close other apps. Most webcams work with one app at a time, so Zoom, Teams, OBS or another tab can hold it. Quit them and press start again.
- Check the hardware. Laptops often have a privacy shutter or a camera key on the keyboard. Plug a USB webcam straight into the computer: a shared hub can leave it short of bandwidth.
- Works here, not in your app? Then the app is set to a different camera. See below.
Choosing the camera in Zoom, Teams, Discord and OBS
Each app picks its own camera. In Zoom, open Settings > Video and choose it under Camera. In Microsoft Teams, go to Settings > Devices > Camera. In Discord, User Settings > Voice & Video > Camera. In OBS, add a Video Capture Device source and pick the camera from the Device list; set Resolution/FPS Type to Custom to choose the size yourself.
Calls rarely send your full resolution. Video apps adjust quality to your connection and to the size of the window on the other end, so a 1080p camera often reaches people at 720p or less. Recording in OBS or the camera’s own app keeps the full picture. A sharper camera still helps: the call app starts from a cleaner image.
Webcam mic test
Most webcams have a microphone built in. Turn on “Check the mic too” and we open the mic that belongs to the same camera when the browser can tell, otherwise your default mic, and show its level. Speak at a normal volume: the bar should reach well past halfway. For a recording you can play back, a room noise check and every fix, use the mic test.
Questions
Is this webcam test private?
Yes. The picture goes from your camera to this page and nowhere else. Nothing is recorded, uploaded or stored. Snapshots are made in your browser and saved only if you download them.
Why is my webcam only 720p or 480p here?
Either that is the camera’s top size, or something limits it. Pick 1080p under “Ask the camera for”. If “Camera max” shows more than you get, close other apps using the camera and plug it straight into the computer.
Can I test my webcam on a phone?
Yes, in Safari on an iPhone and Chrome on Android. When a phone offers more than one camera, a picker appears so you can switch between them.
Why is the preview mirrored?
So that raising your right hand moves the right side of the picture, like a mirror. People on a call usually see you the right way round. Switch off “Mirror” on the preview to see what they see. Snapshots are saved the way the preview shows them.
Is a better webcam worth it?
If the picture looks grainy in good light, or the camera can’t reach 1080p, it usually is. If the light check is the problem, a light fixes more than a new camera. The webcam finder narrows the choice by how you use it, and streamers can start with the best webcams for streaming.