Compress MP3 Online

Reduce MP3 file size in the browser by choosing a target bitrate and saving a new local MP3.

Need help with the calculation?
Files are not sent to a server. Processing runs in your browser, and the queue handles one file at a time so the device stays responsive.
Drop MP3 files here or tap to choose several files
No files selected.
The MP3 is recompressed locally with the selected bitrate. Files are not sent to a server.
MP3 quality
Exact settings
In queue0
Done0
Size saving-
Add MP3 files.
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How to use it

Add an MP3, choose the target bitrate and process. The browser reads the audio and creates a new MP3 on your device.

Recommended settings

64-96 kbps is often enough for speech. For music, start at 128-192 kbps. Recompressing MP3 can slightly reduce quality.

Privacy

Your files are not uploaded to a server. The editor runs in your browser with local libraries from this site.

Limits

Large images can take longer on phones. If the browser slows down, process fewer files at once or choose a smaller output format.