The MP3 is re-encoded at a lower bitrate on the server. For speech, 64–96 kbps is plenty; for music, 128–160 kbps stays clean while cutting size. The upload is deleted immediately after.
Compress an MP3
Lower the bitrate of MP3 files to shrink them for sharing or storage.
Compress an MP3: add your file above, lower the quality slider until the size is small enough, and download the compressed file. It is free, needs no sign-up, and the uploaded file is deleted right after processing.
- 100% free — no sign-up
- Files processed privately
- Fast — no upload wait
- No file-count limit
About mp3 compressor
How it works
1. Add your file
Drop your file onto the MP3 Compressor box above, or click to browse.2. Set the quality
Drag the quality slider — a lower value makes the file smaller. The output size is shown before you download.3. Download
The file is compressed on the server, then deleted. Click Download.
Frequently asked questions
Is MP3 Compressor free?
Yes — MP3 Compressor is free with no account, no watermark, and no file-count limit.
Where is my file processed?
On a secure server that compresses the file and then deletes it immediately. Nothing is stored.
Will quality drop?
You control it. A higher quality setting keeps the file closer to the original; a lower setting makes it smaller. Preview the output size before you download.
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