Secure compression with automatic file deletion.

When you upload an audio file, it is securely transmitted to our compression server using industry-standard encryption (HTTPS). Your file is processed using professional FFmpeg compression and then automatically deleted immediately after compression completes. We do not store your audio files permanently, and they are removed from our servers within seconds of processing completion.

The only time your file exists on our servers is during the active compression process, which typically takes 5-15 seconds depending on file size. Once you download the compressed file, the original and compressed versions are permanently deleted from our servers.

We use privacy-friendly analytics to measure traffic patterns. These tools collect anonymous metrics about page views, referrers, device types, and time on site. No personal data, IP addresses, or MP3 contents are stored.

CompressMP3 uses a single functional cookie to remember your preferred theme (light/dark). You can clear this cookie at any time without affecting your ability to use the compressor.

Questions about privacy or data handling can be sent to hello@compressmp3.com. We'll respond within three business days.