Camera Controls Test
Adjust zoom, torch and focus where your camera supports them, applied safely. No dead controls.
Controls appear only when the camera supports them. Many webcams (especially on desktops) don’t offer zoom, torch or focus at all.
01How this test works
Camera tests ask your browser for a live video feed and show it in a preview that stays entirely on your device. Once you allow access, we read the camera’s real settings — resolution, aspect ratio, frame rate and which way it faces — straight from the camera.
Where your browser supports it, we estimate the real frame rate by counting each frame as it appears on screen. Any snapshot you take is created on your device and offered as a download — nothing is sent to a server.
The camera turns on only when you click, an on-screen indicator shows while it is active, and the feed stops the instant you press Stop, leave the page, or switch tabs.
02How to use it
- Press the grant-access button and allow camera access when your browser asks.
- Check the live preview and use mirror, device selection, or capture controls as needed.
- Read the reported resolution, aspect ratio and observed frame rate below the preview.
- If you take a snapshot, review it and download it — it never leaves your device.
- Press Stop to end the camera stream; the active indicator will turn off.
03What this test covers
What it detects
- Whether your browser can open the camera and receive frames
- The negotiated resolution, aspect ratio and facing mode
- A browser-observed estimate of delivered frame rate
- Whether the image looks correct to you (focus, exposure, color) as a visual check
What it can’t detect
- A sensor’s certified specifications or true optical quality
- Hardware defects versus driver, privacy-shutter or lighting problems
- Anything about the people or scene — we never run face detection or AI analysis
04Troubleshooting
| Symptom | What to do |
|---|---|
| Permission denied | Click the padlock in the address bar, allow the camera, and reload the page. |
| Black image | Check for a physical privacy shutter, and make sure no other app is using the camera. |
| Device busy | Close other apps (video calls) that hold the camera, then retry. |
| Wrong camera | Use the camera selector to switch between front and rear or external devices. |
| Low resolution or frame rate | Improve lighting, close heavy background apps, and try a wired or less-busy connection. |
05FAQ
Is my video uploaded?
No. The preview and any snapshot stay on your device and are never sent to a server.
Why is my camera light on?
Your camera is active while the test runs. It turns off when you press Stop or navigate away.
Why does it need HTTPS?
Browsers only allow camera access on secure (HTTPS) origins for your safety.
Do you run face detection?
No. We never perform face detection, recognition, or any AI analysis of your video.
Can I use my phone’s camera?
Yes, and you can usually switch between front and rear cameras with the selector.
Why is the frame rate lower than my camera’s spec?
The value is what the browser actually delivered, which is affected by lighting, USB bandwidth and system load — not a sensor rating.
Related tests
Preview your camera, pick a device, mirror or rotate, and read the real track settings — resolution, aspect ratio and observed frame rate.
Request 480p through 4K in turn and compare requested versus actual negotiated resolution for your camera.
See a live brightness histogram with crushed-shadow and blown-highlight indicators. No AI, no face analysis, no recording.