Drop in your audio, pick a size, check the estimate, then download.
How it works
- 1
Drag audio files onto the page — several at once is fine
- 2
Pick 64, 96 or 128 kbps, tick "Mono" if you like, and check the estimated size
- 3
Export and download the smaller MP3
FAQ
- How small can it get?
- 64 kbps mono is the smallest: about 28 MB per hour of speech, so a 30-minute meeting is around 14 MB. The page shows the estimate before export, so you can try another setting first.
- How much worse will it sound?
- Speech at 64 kbps mono stays clear, just less crisp. Music below 128 kbps starts to sound dull and smeared, so keep music at 128 kbps or higher.
- Are my files uploaded to your server?
- No. Compression runs in your browser; the files never leave your device.
- Can I compress many files at once?
- Yes. Add as many as you like, pick one bitrate and compress them together — there is no file limit.
- Is it free? Do I need an account?
- Free, no account, and no watermark on the export.
Keep going with this audio
Similar tools
Not here? For text-to-speech and AI voices use TutuSound; to edit video or pull audio from video use TutuCut. All audio tools