MP3 Compressor
Reduce MP3 file size by re-encoding at a lower bitrate. Convert high-bitrate audio to smaller files for web streaming, apps, email attachments, or storage without significant quality loss. In-browser with FFmpeg.wasm — no upload, no signup.
Updated June 2026
- 1Upload your MP3
- 2Choose a bitrate
- 3Download the compressed MP3
Drop your audio anywhere, click to browse
MP3, WAV, OGG, FLAC, AAC · Any format
How to Use MP3 Compressor
- 1
Upload your MP3
Drag and drop your MP3 file into the upload area, or click to browse and select it.
- 2
Choose a bitrate
Lower bitrates shrink the file more but reduce audio quality.
- 3
Download the compressed MP3
The optimized file downloads automatically to your device.
Frequently Asked Questions
What bitrates are available for compression?▼
What is a good bitrate for web audio?▼
How much can I reduce the file size?▼
Is the compression done in the browser?▼
What formats can be compressed?▼
How to use MP3 Compressor
- 1
Upload your MP3
Drag and drop your MP3 file into the upload area, or click to browse and select it.
- 2
Choose a bitrate
Lower bitrates shrink the file more but reduce audio quality.
- 3
Download the compressed MP3
The optimized file downloads automatically to your device.
Frequently asked questions
Everything you need to know about mp3 compressor.
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