Test any camera: phone, tablet, laptop or USB
This camera test works with any camera your browser can reach. Open it on a phone to test the front and rear cameras, on a laptop to test the built-in camera, or on a desktop with a USB webcam, capture card or virtual camera. The results panel shows the resolution, measured frame rate, aspect ratio and facing direction of whichever camera is active.
Testing a phone or tablet camera
- Open this page in your phone's browser - Chrome on Android, Safari or Chrome on iPhone and iPad.
- Tap Start camera and allow access.
- Tap Switch camera to move between the front (selfie) and rear cameras. The Facing row confirms which one is active.
- Check each item below.
What to look for
- Sharpness. Point the rear camera at printed text about 30 cm away. The letters should be crisp once the camera has focused. If everything looks hazy, clean the lens with a soft cloth - pocket lint and fingerprints are the usual cause.
- Focus. Move the phone closer to an object and then further away. The image should refocus within a second or two. A camera that never sharpens may have a stuck autofocus motor.
- Spots and marks. Point the camera at a plain white wall or the sky. Dark spots that stay in the same place when you move the phone are dust inside the lens or a damaged sensor.
- Colour. White objects should look white, not pink or green. A strong, consistent colour cast can point to a failing sensor.
- Frame rate. In good light, the measured frame rate should be close to 30 fps. A big drop in normal light can mean the phone is overheating or very busy.
- Cracks. A crack in the rear camera glass shows up as a bright streak or flare around light sources.
Multiple rear lenses
Many phones have wide, ultra-wide and telephoto lenses. Whether a browser can use them depends on the phone: some list each lens as a separate camera, while others only give websites the main camera. If you only see one rear camera here, that's the phone's choice, not a fault. Use the phone's own camera app to test the other lenses.
Testing a laptop camera
Most laptop cameras deliver 1280 × 720 or 1920 × 1080. Because the sensor is small, the image is grainy in dim light - add light in front of you before deciding the camera is faulty.
If the test can't open the camera at all:
- Check for a privacy shutter above the screen or a camera key on the keyboard.
- Check the operating system's camera privacy settings (Windows: Settings → Privacy & security → Camera; macOS: System Settings → Privacy & Security → Camera).
- Close other apps that may be using the camera, such as video-call apps.
The Webcam Test page has a full step-by-step troubleshooting guide.
Testing a used or second-hand device
Buying a used phone or laptop? A two-minute camera check catches the most common hidden faults:
- Test both front and rear cameras.
- Read small text to check focus.
- Point at a white wall to check for spots and colour problems.
- Point at a lamp to check for streaks from cracked glass.
- Check the frame rate in good light.
- For phones, check whether Torch shows Available under hardware controls, then try it in the Camera Studio.
Camera test vs. webcam test
Both pages use the same measurements. The difference is focus:
- Camera Test (this page) is mobile-first and built for quickly checking any camera, including phone front and rear cameras.
- Webcam Test is designed for desktop webcams, with a detailed troubleshooting guide for permission, driver and USB problems.
To see every resolution a camera supports, run the Camera Resolution Test.
Privacy
The camera image is displayed and measured in your browser and is never recorded or uploaded. The camera turns off when you press Stop camera or leave the page.