Compress MP3
Reduce MP3 file size by adjusting bitrate. Keep great audio quality with smaller files.
Drag and drop your file here
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No sign-up required. Your files never leave your browser.
How to Use Compress Mp3
- Click the upload area or drag and drop your MP3 file.
- Select your target bitrate — lower bitrate means smaller file.
- Click "Compress" to re-encode at the chosen bitrate.
- Wait while the MP3 is processed.
- Download your smaller MP3 file.
Why Use Compress Mp3?
- Reduce MP3 Size — Shrink large MP3 files for easier storage and sharing.
- Stay in MP3 — Output remains in the universally supported MP3 format.
- Bitrate Control — Choose exactly how much to compress based on your needs.
- No Software Needed — Works directly in your web browser.
Frequently Asked Questions
128kbps is good for speech and podcasts. 192kbps or higher is recommended for music to preserve quality.
Yes. Audiobooks are mostly speech, so they compress well even at lower bitrates like 64-96kbps.
Yes. The output is standard MP3, which plays on every device and music app.
A 320kbps MP3 compressed to 128kbps will be roughly 60% smaller.