Waveform visualizer

Draw an audio file's waveform in-browser and download it as a PNG, with duration/peak/RMS stats.

Drop an audio file here, or

WAV / MP3 / M4A / OGG up to 10:00.00 and 150 MB. Decoded in this tab — never uploaded.

Everything runs in this browser.

How to use

  1. Drop or choose an audio file.
  2. Check the drawn waveform and stats.
  3. Download the PNG if needed.

What it supports

Decodes whatever the browser's AudioContext supports (WAV/MP3/M4A/OGG typically), up to 10 minutes and 150 MB. Peak and RMS come from the decoded samples; the canvas render is 1024×200. No playback or editing — visualization and stats only.

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