What Is a Webcam Tester?
A webcam tester shows a live preview of your camera feed directly in your browser, so you can confirm it's working, check focus and lighting, and see its actual resolution before joining a video call or going live on a stream.
How to Use the Webcam Tester
- Click "Allow Camera" above.
- Grant camera permission when your browser prompts you.
- Your live camera feed appears - check for a clear, in-focus image.
- Check the resolution and frame rate readout below the preview.
How It Works
This tool uses navigator.mediaDevices.getUserMedia({video:true}), a standard browser API
that requests temporary access to your camera and streams the live video directly into the page. Nothing is
recorded or transmitted - the moment you leave this page, camera access stops.
Understanding Your Results
- Clear, live image appears - your webcam is working correctly.
- Black screen with no image - check if another app is currently using the camera, as most webcams only allow one active connection at a time.
- Very low resolution reported - your camera may be defaulting to a low-quality mode; check your OS camera settings.
- Frozen or stuttering feed - could indicate a USB bandwidth issue or an outdated driver.
Benefits
- Quickly confirm your camera works before an important video call.
- Check lighting and framing without opening a full video-call app.
- No software install or account required.
Common Mistakes to Avoid
- Having another app open that's using the camera - close Zoom, Teams, or other video apps first.
- Denying the permission prompt - reset the site's camera permission from your browser's address bar settings.
- Testing in poor lighting - this affects image quality but isn't a hardware fault.
Frequently Asked Questions
Does this tool record or save my video?
No. Your camera feed is displayed live in your browser only and is never recorded, saved, or sent to any server. Access stops the moment you close this page.
Why is my camera feed black?
Most commonly this means another application is already using your camera. Close other video apps and refresh this page, or check that your camera isn't physically covered or disabled.
Can I test an external USB webcam here?
Yes, if your operating system recognizes it as a camera device, this tool will detect and preview it the same way as a built-in laptop camera.
Does this work on mobile browsers?
Yes, most mobile browsers support the same camera API, though you may be prompted to choose between your front and rear camera.
Conclusion
This tester gives you a fast, private way to confirm your camera works before you rely on it for a call or recording. Pair it with the Microphone Tester for a complete audio-and-video check before your next meeting.