Camera Test
Click “Start Test” to preview your webcam. Select a camera, verify resolution and frame rate, take a snapshot, or record a local WebM clip.
Camera Preview
Click Start Test and allow camera access when prompted.
Camera data stays in your browser. Snapshots and recordings are created locally only when you ask for them.
Tips for Testing Your Camera
- 1Click “Start Test” and allow camera access when your browser prompts you.
- 2Check that you can see yourself clearly in the preview and verify resolution and frame rate.
- 3Use good lighting, position the camera at eye level, and close other apps that may be using the camera.
Understanding Webcams & Camera Technology
How Do Webcams Work?
A webcam captures light through a lens and focuses it onto an image sensor, typically a CMOS chip. The sensor converts light into electrical signals that the camera processor turns into a digital video stream at a specific resolution and frame rate.
Resolution & Frame Rate
720p (1280×720) is a common minimum for video calls. 1080p (1920×1080) is standard for quality conferencing. Higher resolutions need more bandwidth. 30 fps is typical; 60 fps looks smoother for motion-heavy use cases.
Browser Camera Access
This test uses the getUserMedia API to request camera access. The video stream is displayed in your browser only. No frames are uploaded, stored, or transmitted to any server unless you download a snapshot or recording locally.
Frequently Asked Questions
Why does my camera show a black screen?
This is usually caused by another application (Zoom, Teams, FaceTime) exclusively using the camera. Close other video apps and try again. On some laptops, check if there is a physical privacy shutter covering the lens.
How can I improve my camera quality for video calls?
The biggest improvement comes from better lighting — face a window or use a desk lamp pointed at your face. Keep the camera at eye level. Close unnecessary browser tabs and applications to free up system resources.
Is my video being recorded or sent to a server?
No. The live preview runs entirely in your browser. Nothing is uploaded unless you explicitly take a snapshot or start a local recording and download the file yourself.
Can I switch between multiple cameras?
Yes. If your device has more than one camera, use the camera selector above the controls. On phones you can typically switch between front-facing and rear-facing cameras after granting permission.
Does the mirror setting affect recordings?
No. Mirror only flips the on-screen preview for a more natural selfie view. Recordings and snapshots use the raw camera stream orientation unless you capture while mirror mode applies to the snapshot canvas.