Audio Compressor

Easy to Use, Convenient to Share

Online UniConverter (originally Media.io) can compress audio file size via a web browser on Windows, Mac, or Linux system, without any downloading and installing.
It enables you to save audio file to Dropbox and share it directly by Facebook, YouTube, or any other device.

Many Input Formats

You can compress audio file in any format including MP3, WAV, M4A, FLAC, etc.

Smart Output Settings

Smart audio compressor online to shrink audio file size with one click, further customization like video resolution, output size, and format are also available.

No Ads Added, No File Limits

Compress audio file without ads added, you can shrink audio file one by one without quantity limit after sign up.

Privacy security

Online UniConverter (originally Media.io) is a secure HTTPS (SSL) connection website, so you can securely upload your audio files.
All the uploaded and compressed audio files are automatically removed from our serves after a few hours.

Any Output Quality & Format

You can change the audio files quality with 32Kbps, 64Kbps, 128Kbps, 256Kbps, and 320Kbps. And convert the audio format to MP3, WAV, M4A, AAC, FLAC, M4B, OGG, APE as your needs.