Compress MP3 audio online with simple size and quality presets while keeping the output as a real MP3 file.
Choose an MP3 file from your device.
Use low for the smallest file, medium for balance, or high for better quality.
Download the completed file after the worker finishes processing it.
The compressed MP3 file keeps a matching output format for reliable playback.
Choose the smallest file, a balanced result, or better quality depending on your sharing and playback needs.
Large files use multipart upload, then a background worker handles the FFmpeg compression task.