Compress Audio

Compress audio, free.

Drop an audio file, pick a bitrate, and shrink the file size — re-encoded to MP3 right in your browser, so it never leaves your device. Smaller bitrate = smaller file.

Drop your audio here
or click to choose a file · MP3, M4A, WAV, OGG, FLAC · stays on your device
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0:00 / 0:00
No file loaded yet.
Bitrate (lower = smaller)
It re-encodes to MP3 at the chosen bitrate on your device — nothing is uploaded. The estimate is approximate; the real size is shown after.

How to compress audio

  1. Drop your file in. Choose or drag an MP3, M4A, WAV, OGG or FLAC — it loads in your browser and is never uploaded.
  2. Pick a bitrate. Lower kbps makes a smaller file; an estimated size is shown for each option.
  3. Preview & download. Hear the result, then save the smaller MP3.

Frequently asked questions (5)
Is the audio compressor free?

Yes — completely free, with no sign-up, no watermarks, and nothing uploaded.

Do my files get uploaded?

No. Compression runs entirely in your browser, so your audio never leaves your device.

How does it make the file smaller?

It re-encodes to MP3 at a lower bitrate (kbps); a lower bitrate means a smaller file with some quality trade-off.

What bitrate should I choose?

128 kbps is good for music, 96 kbps is a smaller balance, and 64 kbps is the smallest — best for speech and voice notes.

Which formats can I use?

Any audio your browser can decode — MP3, WAV, M4A, OGG or FLAC; the result is always MP3.

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