Audio Compressor.
Reduce audio file size by re-encoding at a lower bitrate. Choose 32–128 kbps. Free online tool, no sign-up required.
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Drop files here or click to browseMP3, WAV, M4A, AAC — max 200MB
Output is always MP3.
How to use
Upload an audio file (MP3, WAV, M4A, AAC).
Choose a quality preset (32, 64, 96, or 128 kbps).
Click Compress Audio and download the smaller MP3.
Frequently Asked Questions
What bitrate should I use for voice recordings?
64 kbps is sufficient for voice-only recordings like podcasts or voice memos. Use 96 kbps for better clarity.
What bitrate for music?
128 kbps provides acceptable quality for casual listening. For higher quality, consider not compressing.
Why does the output always come out as MP3?
MP3 is the most universally compatible compressed audio format. The output is always an MP3 regardless of input format.
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