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Media Device Tester - Online Check Camera, Mic & Speaker

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Media Device Tester

Online check for your camera, microphone & speaker — 100% private, no uploads

Camera: Ready to test Mic: Ready to test Speaker: Ready to test

Click "Start Camera" to begin

Camera Info

Start your camera to see device details.

Privacy Note

Your camera feed is processed entirely on your device. Nothing is recorded, stored, or transmitted. The video stream stays local.

Live Waveform
Low
High

Volume: -- dB

Microphone Info

Start the microphone test to see device details.

Tips

Speak at a normal volume. The waveform should show clear peaks. If it's flat, check your mic connection or permissions.

Tone Generator
100 Hz1 kHz4 kHz8 kHz
Quick Checks
  • âś… 440 Hz — Standard tuning pitch
  • âś… 1 kHz — Mid-range clarity
  • âś… 4 kHz — High-frequency response
  • âś… Stereo pan — Left/Right channel separation
Caution

Start with low volume. Prolonged exposure to loud tones may damage hearing or speakers. Keep the volume at a comfortable level.

Frequently Asked Questions

When you click "Start Camera" or "Start Mic Test", your browser will display a permission popup. Click "Allow" to grant access. If you accidentally denied permission, you can reset it in your browser settings under Privacy & Security → Site Settings. Look for camera/microphone permissions for this site and change them to "Allow." On mobile, check your device's system settings for the browser app.

Common reasons include: (1) Camera is being used by another application (close other apps like Zoom, Teams, or Skype); (2) Permission was denied — check your browser's site settings; (3) The camera is physically blocked or disconnected; (4) On Mac, ensure the browser has camera access in System Preferences → Security & Privacy → Camera; (5) Try selecting a different camera from the dropdown if you have multiple devices.

Once you've granted permission, a device selection dropdown will appear below the test area. Use it to switch between available devices (e.g., front/back camera on mobile, or multiple webcams/mics). On desktop browsers, you can also click the camera/mic icon in the address bar to manage devices. The dropdown updates automatically after permission is granted.

Absolutely nothing is uploaded or stored. All media processing happens entirely on your device (client-side). Your camera feed, microphone audio, and recordings stay local in your browser's memory. There is no server involved — no data leaves your computer. This tool uses only the getUserMedia, Web Audio API, and MediaRecorder browser APIs. You can even disconnect your internet after the page loads and everything will still work.

This tool works on all modern browsers: Google Chrome (version 53+), Mozilla Firefox (version 36+), Safari (version 11+ on macOS and iOS), Microsoft Edge (version 12+), and Opera (version 40+). Some features like stereo channel testing require Web Audio API support, which is available in all listed browsers. For the best experience, keep your browser up to date.

Low microphone volume can be caused by: (1) System input volume set too low — check your OS sound settings; (2) The microphone is far from your mouth — move closer; (3) The wrong microphone is selected — use the dropdown to switch; (4) The mic has a physical mute switch (common on headsets); (5) Browser or OS audio enhancements are interfering. The waveform should show visible movement when you speak at a normal volume.

Use the volume slider in the Speaker tab to set a low level before playing any tone. Start at 20-30% and gradually increase. You can also use headphones for private testing. The tone plays only while the button is active (or for a set duration), so you have full control. The Stop button immediately cuts the sound.

Try these steps: (1) Ensure the device is properly connected (check cables, USB ports); (2) Restart your browser; (3) Check if the device appears in your operating system's device manager or sound settings; (4) On Windows, check Settings → Bluetooth & devices; (5) Try a different USB port; (6) Update your device drivers. If it's a bluetooth device, ensure it's paired and connected.

Yes! This tool is fully responsive and works on smartphones and tablets. On mobile, you can test your front/rear cameras and built-in microphone. For speaker testing, use your device's speaker or connect headphones. The interface adapts to smaller screens for easy one-handed use. Note that iOS Safari may require user interaction before playing audio (which the "Play" button satisfies).

The waveform and volume meter provide a real-time visual representation of your microphone's input. The volume level is calculated using RMS (Root Mean Square) from the raw audio data, giving a good indication of relative loudness. However, the dB values are relative and not calibrated to professional SPL meters. This tool is excellent for verifying that your mic is working, comparing relative levels, and checking for distortion, but it should not replace professional audio measurement equipment.
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