Free tool
Runs entirely in your browser. Drop a clip, set the fade lengths, and get a clean, smooth start and ending — perfect for intros, outros, loops and polished mixes. Nothing is uploaded.
Try it
The fastest way to add a professional fade in and fade out without installing anything.
MP3, WAV, OGG, M4A — up to 25 MB. We'll fade the start and end smoothly.
How it works
The fader uses your browser's Web Audio API to decode the file, shape the volume curve at the start and end, and re-encode a 16-bit PCM WAV — all on your machine, no server round trip.
Step 1
MP3, WAV, OGG, M4A or FLAC — up to 25 MB.
Step 2
Choose fade-in and fade-out length plus a smooth or linear curve.
Step 3
Preview first, then save the faded audio.
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