Why is the active resolution different from my selection?

The menu expresses a preferred constraint. The camera and browser negotiate an available mode, and the diagnostics show the resolution that was actually applied.

Does the webcam test record video or audio?

No. It displays a live video stream and can capture a still frame. It does not record a video, request microphone audio or upload camera frames.

What does the measured FPS value mean?

Where supported, it counts genuine delivered video-frame callbacks. It can differ from the camera's reported rate because of lighting, bandwidth, browser scheduling or a hidden tab.

Does a brightness or frame warning prove the webcam is faulty?

No. These are approximate browser observations. A dark scene, privacy shutter, throttled tab or unsupported callback API can produce similar symptoms.

Back to Browser & Security Tools

Webcam Test

Preview a camera, try supported resolution and facing preferences, inspect live diagnostics and capture a private local snapshot.

Webcam Settings

CameraResolutionFacing preferenceMirror PreviewDisplay only; does not alter the stream.

Camera frames stay in this browser. No audio, recording, upload, or persistent storage is used.

Webcam Preview

Camera is off

Click Start Camera to begin.

Match mirrored preview in photo

Camera Information & Diagnostics

Status: Inactive
Active camera: Not active
Active resolution: Not available
Aspect ratio: Not available
Reported frame rate: Not available
Measured video FPS: Not available
Approximate frame size: Not available
Facing mode: Not reported by camera
Frame delivery: Not monitoring
Scene brightness: Not measured

FPS is measured from genuine video-frame callbacks when supported. Brightness is an infrequent low-resolution image estimate, not professional exposure analysis. A frame warning may also result from browser throttling or a hidden tab.

How to use Webcam Test

1
Select a camera, resolution preference and front or rear facing mode under Webcam Settings.
2
Click Start Camera and approve access in the browser when prompted.
3
Inspect the live preview, switch to fullscreen if useful and review frame delivery, brightness and active camera details.
4
Capture a snapshot, then download it as PNG or JPG or choose Retake Photo.
5
Click Stop Camera when finished; Reset clears the session and selected snapshot.

Frequently asked questions

About Webcam Test

A camera can be detected yet still use the wrong lens, an unexpectedly low mode or an interrupted stream. The live preview places the negotiated settings beside measured delivery information, making it easier to separate device selection from the mode the browser actually received.

Snapshot capture uses the current frame and offers PNG or JPG downloads without persistent storage. Brightness is estimated from an occasional low-resolution sample, and frame delivery is observational rather than a laboratory benchmark. Stopping or resetting releases the active media tracks.