Audio Compressor
Reduce MP3 and WAV file sizes by re-encoding as MP3. Choose Small (96 kbps), Balanced (128 kbps) or High quality (192 kbps).
Drop your audio files here
or drag and drop
Processed in your browser, not uploaded.
Processed locallyFiles and text are processed in your browser and are not uploaded to our servers.Learn more
How to use this tool
- 01
Choose your file
Select one file or a batch in the indicated input format.
- 02
Adjust the result
Compression is lossy: 96 kbps prioritizes size, 128 kbps balances size and quality, and 192 kbps keeps more detail. An already low-bitrate source or a very short file can become larger. Results compare original and output sizes and show bytes saved and percentage reduction only when the result is smaller.
- 03
Process and download
Start processing, then play or download the result. Files are processed one at a time.
Format and quality
Compression is lossy: 96 kbps prioritizes size, 128 kbps balances size and quality, and 192 kbps keeps more detail. An already low-bitrate source or a very short file can become larger. Results compare original and output sizes and show bytes saved and percentage reduction only when the result is smaller.
Local processing
Your files are processed locally in your browser and are not uploaded to WeDoConvert servers.
Very large media files can exceed browser memory. The engine loads only when you start processing. You can cancel and start another conversion.
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Frequently asked questions
How does compression reduce file size?
Audio is re-encoded as MP3 at the selected bitrate. Lower bitrates use fewer bits per second and discard more detail.
Why can the compressed output be larger?
The source may already use a lower bitrate. Headers can also dominate very short clips. The result reports when no size reduction was achieved.