Audio Compressor

All audio tools Free

Compress MP3, M4A, OGG, Opus, WMA and WAV files online: shrink audio file size while keeping great sound. Free audio compressor.

Select an audio file to compress

Drag & drop your audio here, or click to browse

Accepted: MP3, MPGA, M4A, MP4, AAC, OGG, OGA, OPUS, WEBM, WMA, WAV, AIF, AIFF, FLAC. Up to 4 MB.
Compression level
FLAC is lossless, so it always sounds exactly like the original: the level does not apply.
Save this lossless file as

WAV, AIFF and FLAC cannot shrink in their own format, so choose what to save it as.

Extra savings

Lossy files keep their format and are re-encoded at a lower bitrate. You never get a bigger file: if it cannot shrink, you get your original back.

Preview
Play the original here, then compress it.
Your compressed audio is ready

This file is already about as small as it gets at this level, so we kept your original. Try a stronger level or mono.

The download started automatically. Need it again?

Download again

About Audio Compressor

The Audio Compressor makes music, podcasts and voice recordings smaller in seconds. MP3, M4A, AAC, OGG, Opus and WMA files keep their format and are re-encoded at a lower bitrate, worked out from the bitrate of your own file, so every level really saves space.

WAV, AIFF and FLAC files are lossless and cannot shrink in their own format: save them as FLAC for identical sound at about half the size, or as MP3, M4A or Opus for a much smaller file. Converting to mono and removing the embedded cover art save even more.

Compression runs on the server and keeps your tags. You never get a bigger file: when a file cannot get any smaller, you get your original back. The tool is free and needs no account.

How to use Audio Compressor

  1. Upload your audio file: MP3, M4A, AAC, OGG, Opus, WMA, WAV, AIFF or FLAC.
  2. Pick a compression level: Light, Medium or Strong.
  3. Optionally convert to mono or remove the cover art to save more.
  4. Click Compress audio and download your smaller file.

Frequently asked questions

Yes. MP3 is already a compressed format, so it gets smaller by re-encoding at a lower bitrate. A 320 kbps file loses half its size at the Medium level with hardly any audible change. Files that are already at a low bitrate have less room left.

Lossy formats always trade some detail for size. Light keeps the sound close to the original, Medium is the best balance for music, and Strong is ideal for voice, podcasts and audiobooks.

WAV is uncompressed, so it shrinks by changing format. Choose FLAC to keep identical sound at about half the size, or MP3, M4A or Opus to cut it by up to 90%.

Yes. Title, artist and other tags are kept, and the cover art is kept in MP3, M4A and FLAC files. Switch on Remove cover art to save a little more space.

Yes, compressing is free with no signup. Files are processed securely on the server and cleaned up automatically.
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