MP3 Modifier

This MP3 modifier changes an audio file directly in your browser. Drop in an MP3 or WAV, then cut out parts, move sections around, and apply effects: reverb, bass boost, 8D spatial audio, slowed + reverb, and speed or tempo changes. It's free, with no signup and nothing to install.

Upload your file, and the track loads onto a waveform so you can see where you're working. Select a region to trim or rearrange, pick the effects you want from the studio, and preview as you go. When it sounds right, export the modified file.

Because you work on the waveform, edits land where you mean them instead of by guesswork. Zoom in to line a cut up with a beat or the start of a vocal. Trims, rearranged sections, and effects all stack in the same project, so you can reshape a track's structure and its sound in one pass rather than running it through separate tools.

People usually modify an MP3 to make a specific version of a song: a slowed + reverb edit for a calmer feel, a bass-boosted mix for headphones, or an 8D pan that moves the sound around your ears. You can also tighten a track by removing an intro or cutting a repeated section.

No app or account needed. Everything runs in the browser, so you can modify an MP3 from any computer and download the result when you're done.