Compress audioFREE
Reduce audio file size with a bitrate control.
- 1 Add
- 2 Convert
- 3 Download
Drop audio files here
MP3, WAV, OGG, FLAC, M4A, AAC. Up to 1 GB each, 20 at once.
Stays on your device
Your files
Done
These files were skipped. Everything else is ready below.
Kept only on this device. If a download is interrupted, reopen this page within an hour and choose Continue.
Questions about Compress audio
Is Compress audio free?
Yes. It is free to use, with no sign-up, no watermark and no limit on how often.
Are my files uploaded?
No. It runs in your browser, so your files stay on your device and are never sent to us or anyone else. Privacy notice
Which files can I use?
MP3, WAV, OGG, FLAC, M4A, AAC in, MP3 out. Up to 1 GB per file, 20 files at a time, 4 hours long.
Step by step, and if something goes wrong
Steps
- Drop audio files.
- Choose a bitrate.
- Select Compress audio, then download the MP3s.
If something goes wrong
- 96 kbps is fine for most listening; 64 kbps suits podcasts and voice notes.
- Everything runs in your browser using its built-in video and audio engine, so very long or 4K videos take a while on slower devices. Keep the tab open until it finishes.
- If you see “Not supported by your browser”, try the latest Chrome or Edge. Safari and Firefox support fewer formats.
- Videos up to 5 GB and 4 hours are accepted. Larger files are read from disk in pieces, so they don’t need to fit in memory.