Fade In Audio

Apply a smooth volume increase at the beginning – perfect for intros and gentle starts

Drag & drop an audio file or click to browse

How to add fade in:

  1. Select an audio file (MP3, WAV, OGG, M4A, FLAC, etc.)
  2. Adjust fade in duration (how long it takes to reach full volume)
  3. Choose fade curve: linear (even), logarithmic (slow start), or exponential (quick start)
  4. Click "Preview Fade In" to hear the effect (real‑time)
  5. Choose output format (MP3 recommended) and bitrate in the settings panel
  6. Click "Apply Fade In & Export" – the processed audio will be created locally
  7. Download the result and enjoy smooth beginnings

All processing happens in your browser using Web Audio API – files never leave your device.