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dashutils

Volume Booster

Fix recordings that are too quiet. Boost volume by a set number of decibels, or normalize loudness so every file sounds equally loud. Works on audio and on video soundtracks.

  • Free, no sign-up
  • Files never leave your device
  • Powered by FFmpeg
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Your files are processed on this device and are never uploaded to a server.

How to use the Volume Booster

  1. 1

    Choose an audio or video file.

  2. 2

    Pick Boost and a decibel amount, or Normalize.

  3. 3

    Process and download.

Boost vs normalize

Boost raises everything by a fixed amount and can clip if pushed too far. Normalize analyses the loudness and adjusts it to -16 LUFS, the common standard for podcasts and online video, with a limiter that prevents clipping.

Frequently asked questions

Is my audio uploaded?

No. Audio is processed in your browser with FFmpeg compiled to WebAssembly. Nothing is uploaded.