Compress Audio Files
Shrink songs, podcasts and voice recordings to send by email or chat, and see the size before you start.
- 100% in your browser
- No upload
- No sign-up needed
- No watermark
How to compress an audio file
- Add your audio
Drop an MP3, WAV, M4A or other audio file on the box above. It stays on your device. - Pick a quality
See the estimated size before you start. Mono settings are best for voice recordings. - Compress and download
Download the smaller MP3 and check how it sounds on the page.
Features
- No uploadProcessing happens on your device with WebCodecs, so even large files stay private.
- No sign-up needed, no watermarkUse every tool as often as you like. Your output is clean.
- Hardware acceleratedUses your device’s video encoder when available, so most jobs finish in seconds.
- Works on phone and desktopRuns in Chrome, Edge, Safari and Firefox on iPhone, Android, Windows and Mac.
Frequently asked questions
Are my files uploaded?
No. The file is read and processed by your browser. It never leaves your device.
Is it free?
Yes. There is no file limit and no watermark, and you don’t need an account.