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Webcam, Mic & Speaker Test
Check your camera, microphone level and left and right speakers before a call or recording.
Free, no uploads, no sign-up. Runs 100% in your browser.
How Webcam, Mic & Speaker Test works
Uses getUserMedia for the camera and microphone and the Web Audio API for levels and test tones. Nothing is recorded or sent anywhere.
How to use Webcam, Mic & Speaker Test
- Drop a video onto Webcam, Mic & Speaker Test.
- The first run downloads the ffmpeg engine (about 30 MB, once).
- Set your range, format or quality options.
- Process it (progress is shown live), then download.
Tips
- Shorter clips and lower resolutions process much faster.
- Processing speed depends on your CPU; plug in laptops for long jobs.
- Keep the tab in the foreground while encoding.
Webcam, Mic & Speaker Test FAQ
- Are my files uploaded?
- No. This tool runs entirely in your browser tab. Files are read from your disk into memory and the result is generated locally.
- Is it free? Are there limits or watermarks?
- Free and open source (MIT). There are no file-size caps, daily quotas, accounts or watermarks.
- Does it work offline?
- Yes, once the page (and any engine it needs) has loaded, it keeps working without a connection thanks to the service worker cache.
Related tools
- Webcam Recorder: Record webcam video with mirror and countdown.
- Voice Recorder: Record your voice with live waveform and export.
- Teleprompter: Scroll your script over the camera preview while you record, with speed, size and mirror controls.
- Video Trimmer: Trim and cut clips with a visual timeline, no re-upload.