Compress MP3 online
Reduce the size of an MP3 online for free. The bitrate is lowered within the validated quality range and you download the result right in your browser.
How to compress your image
- Choose a supported image.
- Check or change the size limit.
- Compress and download the JPG result.
Limitations
The result is a JPG file. Compression can reduce resolution or detail, and acceptance by a third-party site is not guaranteed.
Frequently asked questions
Does my MP3 get uploaded?
No. The audio is processed entirely in your browser and never leaves your device.
Will the title, artist and cover art survive?
Yes by default. The ID3 tags are copied unchanged; removing them only happens if you explicitly choose it when the target does not fit otherwise.
Will the sound change?
The bitrate is lowered within the validated quality range first. Sample rate and channels stay intact. Converting to mono is only offered when stereo cannot keep quality, and only on your explicit choice.
Is there a length limit?
Audio up to 60 minutes can be compressed in the browser today. Longer files need a trim first.