๐ŸชžWebcam mirror

โœ“ Tested & verified Updated: How the test works

Webcam mirror

Your own picture appears here once you allow the camera. Nothing is recorded, nothing is uploaded โ€” this is a mirror, not a webcam test.

Mirror picture

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A mirror flips left and right, so a printed word held up to it reads backwards. Turn the flip off before you check anything with writing on it.

  • Frame rateโ€”
  • Aspectโ€”
  • Cameraโ€”
  • Recordingnever

One gear check a month

Monthly

One thing a month worth measuring before it fails properly โ€” a mic that reset itself, a stick that drifts, a switch sending two clicks. Two sentences and the test.

Free, no account. One click unsubscribes and deletes your address.

Try also

Can I use my webcam as a mirror?

The webcam mirror fills the screen with a mirrored camera image and records nothing at all. A camera preview is normally shown flipped because an unmirrored self-view is disorienting: you move left and the reflection moves right. That flip is exactly what makes a mirror useful, so the page keeps it and removes everything else โ€” no capture, no upload, no controls sitting over your face.

It is a mirror with two differences worth knowing. The screen lights your face from the front, which is why a mirror image on a bright display is kinder than a bathroom mirror under a ceiling lamp. And it is not geometrically honest: a webcam lens is wide and used close, so whatever is nearest to it โ€” usually the nose โ€” is drawn larger than it really is. Sitting back a little removes most of that, at the price of a smaller reflection.

A mirror shows you the room’s light as much as your face, and a camera reacts to that light in ways glass does not. Where the light comes from changes both what you see and what the camera does to keep up.

Where the light isWhat you see in the mirrorWhat the camera does about it
A window in front of youEven light, accurate colour, sharp detailShort exposure, full frame rate
A ceiling lamp onlyShadows under the eyes, nose and chinSlightly longer exposure; the colour warms up
A window or lamp behind youYour face as a silhouetteMeters for the bright area, so the face goes dark
The screen as the only lightA cool, blue-tinted face with visible grainExposure passes 1/30 s, so the rate falls towards 15 fps
Daylight and a warm lamp togetherUneven colour across the faceWhite balance settles on one source and gets the other wrong

If the picture is worse than you expect for reasons the light does not explain, the numbers underneath it are on the camera test, which reports the resolution and frame rate the camera actually agreed to. For the audio half of the same device, start at the mic test.

Frequently asked questions

Why is the image mirrored here but not in a video call?

Both are true at once. Video apps mirror the small preview of yourself, because a self-view that moves the wrong way is unusable, and none of them mirror the stream they send โ€” the other side always sees you the right way round. Hold a page of text up to the camera to see the difference: mirrored, it reads backwards; unmirrored, it reads normally and that is what everyone else gets.

Why is the picture grainy in a dim room?

Two things happen at once when light runs short. The camera raises sensor gain, which lifts noise along with the picture, and it lengthens each exposure to gather more light. Once the exposure passes about 1/30 s the camera can no longer deliver 30 frames a second, so the rate falls towards 15 and movement starts to smear. Adding one lamp in front of you fixes both.

Is anything recorded or uploaded?

No. Frames travel from the camera into a video element and nowhere else โ€” nothing is recorded, no frame is copied or stored, and no request leaves the page while the mirror is open. Stopping the mirror or closing the tab releases the camera and the indicator light goes out. If that light stays on afterwards, something else on the machine is holding the camera.

The camera will not start

Usually another application already has it. A camera can typically be opened by one program at a time, so close video call software, anything with a virtual camera, and any browser tab you forgot was running a preview. After that, check per-app camera permission in Windows Settings > Privacy & security > Camera, and the site permission behind the icon at the left of the address bar.

Does this work on a phone?

Yes, and the front camera opens by default because that is the one you are in. It is mirrored for the same reason a laptop preview is. The rear camera is not mirrored when you switch to it, which looks odd for about a second and is correct: you are not in the frame, so a flip would only reverse the text on everything you point it at.

Does going full screen improve the picture?

No, and knowing why saves some frustration. The stream negotiates its resolution when the camera opens and keeps it, so going full screen scales that same image up to fill the display โ€” a 1280x720 stream on a 1440p screen is being enlarged, not resampled from anything sharper. What full screen does help with is distance, because a bigger image is legible from further back.

How the test works

The camera is opened with getUserMedia and its frames go straight into a video element. The mirror itself is a horizontal transform applied to that element at display time, so it changes what is drawn on your screen and nothing else โ€” the underlying stream is untouched, which is the same arrangement every video call uses for its self-view. Nothing is captured: there is no recorder, no canvas copy of a frame and no network request while the mirror runs. Full screen is requested on a click, because browsers only grant it in response to a gesture, and the stream does not change when the page fills the display; the negotiated resolution is fixed when the camera opens, so a larger image is a scaled one rather than a sharper one. On a phone the front camera is asked for by facing mode rather than by device name, since device identifiers differ between browsers. Stopping the mirror stops every track, which is what turns the camera indicator light off.

Sources:

What a screen mirror is good at

Light, mostly. A display is a large, even, front-facing light source aimed at your face, which is the one thing a bathroom mirror under a ceiling lamp cannot offer.

Angles that glass cannot reach. A laptop lid tilts to positions a hand mirror needs a second hand for, and a phone propped against something covers the rest.

Not for judging colour. Automatic white balance decides what counts as white and keeps revising that decision as the light changes, so a camera image is the wrong place to check whether two colours match.