How to Compress MP3 Online With 3 Easy Steps?


Add MP3 file you want to compress.


Choose MP3 quality and click COMPRESS.


Download compressed MP3 or save to Dropbox.

Why Choose Mediaio to Compress MP3?

easy to use

Easy to Use, Convenient to Share

Mediaio can compress MP3 via a web browser on Windows, Mac or Linux system, without any downloading.
It enables you to save MP3 to Dropbox and share it directly by Facebook, YouTube, or other devices.

any input format

Many Input Formats

Select MP3 compression settings from 320Kbps, 256Kbps, 128Kbps, 64Kbps, to 32Kbps, which will result in your output size.

customize output settings

Smart Output Settings

Smart MP3 compressor to reduce MP3 file size online with one click, further customization like video resolution, output size, and format are also available.

no watermark

No Ads Added, No File Limits

Compress MP3 without ads added, you can shrink MP3 file one by one without quantity limit after sign up.

information safety

Privacy security

Mediaio is a secure HTTPS (SSL) connection website, so you can securely upload your MP3 files.
All the uploaded and compressed MP3 files are automatically removed from our serves after a few hours.

many output formats

Any Output Quality & Format

You can compress MP3 to WAV to reduce MP3 file size, or convert to M4A, AAC, FLAC, M4B, OGG, and APE for special devices.