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Fade in / out

Set total duration so the fade-out lands at the right time.

Drop files here
or click to browse - files stay on your device
Max file size: 300 MB

About this tool

Add a smooth fade-in at the start and/or fade-out at the end of an audio file. Removes harsh starts and abrupt cuts.

Features

  • Independent fade-in and fade-out durations
  • Linear fade curve
  • Preserves original codec where possible
  • Local, private processing

How to use it

  1. Upload audio.
  2. Set fade-in and fade-out seconds.
  3. Click Apply and download.
🔒 100% private

Everything happens inside your browser using JavaScript and WebAssembly. Your files are never uploaded to a server, never stored, and never seen by us.

Frequently asked questions

Can I fade only one end?

Yes - set the other duration to 0.