Batch compress MP3 online free without losing quality.
How to Compress MP3 Online With 3 Easy Steps?
Step 1: Upload Audio
Add MP3 file(s) to compress MP3 file online free.
Step 2: Compress MP3
Choose MP3 quality and click COMPRESS to start compressing.
Step 3: Save the File
Download the compressed MP3 or save to Dropbox.
Why choose Online UniConverter to compress MP3 files?
Easy to Use, Convenient to Share
Online UniConverter (originally Media.io) can batch 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.
Many Input Formats
Select MP3 compression settings from 320Kbps, 256Kbps, 128Kbps, 64Kbps, to 32Kbps, which will result in your output size.
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 Ads Added, No File Limits
Compress MP3 without ads added, you can shrink MP3 file one by one without quantity limit after sign up.
Online UniConverter (originally Media.io) 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.
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.
Information about MP3 audio file
|Description||MP3 is a standard audio format developed by Moving Picture Experts Group and uses MPEG-1 and MPEG-2 standardizations. MP3 uses lossy data compression, meaning that it loses quality over time. This sound format comes with a .mp3 filename extension and is today the most common audio format on websites and multimedia players.|
Windows Media Player
VLC Media Player
|Developed By||Moving Picture Experts Group|
What is an MP3