webcam resolution test
This page requests access to your camera and shows the resolution, frame rate and other parameters the browser actually chose for the active stream. The camera video is drawn straight to the screen by the browser and is never transmitted, recorded, or sent to a server.
The built-in camera only supports up to 720p, so the browser negotiates the best available resolution without raising an error, and only getSettings() reveals that gap between request and delivery.
In low light the camera often lowers its own frame rate to extend the exposure time of each frame, so the requested 30 frames per second does not always arrive in full.
Without a secure context the browser never even asks about the camera; the HTTPS requirement exists to stop an insecure network from intercepting sensitive video while it is in transit.
No. The test only shows the local preview in the browser; no image is recorded or sent to a server. Clicking stop camera ends access.
Because the constraint passed to getUserMedia is only a request; the browser negotiates with the hardware and with any other application currently using the camera, and the final value, revealed by getSettings(), can land below the theoretical maximum printed on the product box.
Yes: the browser offers a device picker right inside its own permission interface, and the chosen track exposes its specific deviceId through getSettings(), which allows switching cameras without reloading the page if the site implements that option.
Because getUserMedia requires a secure context, meaning HTTPS or localhost; an address on plain HTTP on the local network, for example, has the call blocked by the browser itself before any permission prompt can appear.
It can drop independently: cameras often lower frameRate automatically in dark environments to lengthen the exposure time of each frame, even while the negotiated resolution stays the same one requested by the original constraint.
The test uses only the local stream; no image is uploaded.