A free online camera and microphone test tool to help you quickly assess your device's condition.
Supports 7 test functions: Basic info checks resolution, frame rate and codec; Color accuracy test uses color charts and histograms to evaluate color reproduction; Focus test uses edge detection algorithms to score sharpness; Exposure detection provides brightness histogram with over/under exposure warnings; FOV test uses concentric circle grid to evaluate lens distortion; FPS test provides real-time frame rate and stability chart; Microphone test offers level meter and recording playback. All tests run locally in your browser with no installation required.
Features
7 test modes covering common camera and microphone issues
Real-time device information reading
Canvas frame-by-frame analysis for quantitative image quality assessment
Supports switching between multiple cameras and microphones
100% local processing, no privacy concerns
How to Use
1Select the camera and microphone from the dropdown menus at the top
2Click test cards to switch between different test items
3Observe the overlay and data analysis results in the camera preview
4Use the microphone test to record and play back audio
5Device list auto-refreshes on hot-plug
Frequently Asked Questions
Why does the browser ask for camera and microphone permissions?
This tool uses the browser's native API (getUserMedia) to access your camera and microphone. All data processing is done locally and never uploaded to any server. The browser will prompt for permission on first use — please click 'Allow' to enable your devices.
How do I switch between different cameras or microphones?
The dropdown menus at the top of the page list all detected cameras and microphones. Click a dropdown to switch devices. If the device list hasn't updated, click the 'Retry' button or wait for auto-refresh.
Are the test results accurate and useful?
The color analysis, focus scoring, and frame rate detection provided by this tool are valuable references. However, note that color accuracy is affected by ambient lighting and screen calibration; focus scoring reflects edge sharpness as a relative reference; frame rate shows actual transmission rate. We recommend testing under different conditions for a comprehensive assessment.
Why are some test values stuck at zero or inaccurate?
Possible reasons include: low camera resolution affecting image analysis precision; insufficient ambient light affecting color and exposure data; device performance limitations degrading frame rate analysis. Test in well-lit conditions and ensure the camera is properly focused.
Can I use this on mobile devices?
Yes. This tool supports camera and microphone testing on mobile browsers. Some analytical features (like frame rate detection) may be downgraded due to device limitations, but core features such as basic info, focus test, and microphone test all work normally.
Where is recorded audio stored? Will it be uploaded?
All recorded audio is stored only in browser memory and is never uploaded to any server. Recordings are cleared when you refresh the page or switch devices. The recording is limited to 30 seconds.