Compress audio online

Upload MP3, WAV, OGG, FLAC, M4A, AAC, or MP4 and download a smaller MP3 at your chosen bitrate. Requires FFmpeg on the server. Free, no registration.

Many formats Smaller MP3 HTTPS

Drop your audio file here

or browse — up to 100 MB • MP3, WAV, OGG, FLAC, M4A, AAC, MP4 • FFmpeg on server

Choose audio file

Drag and drop MP3, WAV, OGG, FLAC, M4A, AAC, or MP4 — up to 100 MB.

Choose 64–192 kbps — lower means smaller files.

Save the compressed MP3 output.

Smaller files for email, messaging, and storage.

Pick bitrate to balance quality and size.

One tool for common audio and MP4-with-audio files.

Convert in the browser when FFmpeg is on the server.

Need to cut a clip? Try Trim Audio.