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MP3 Compressor - How to Compress MP3 on Mac and Windows?

How to Reduce MP3 File Size With no loss of Audio Quality?


MP3 itself adopts MPEG Audio Layer 3 technology to compress sound at compression ration 1:10 even 1:12 to get smaller volume file at the same time without losing more sound quality, which determines more MP3 files commonly used on the internet music files.

Even so, most people still want to compress MP3 further to reduce MP3 file size to save more MP3 files in limited memory space to play on mobile phone, iPod or other players. In this case you will need a MP3 compressor to help compress MP3 further. iDealshare VideoGo is just the best MP3 compressor compared with other MP3 compressors. iDealshare VideoGo can compress MP3 in good MP3 quality and under simple operation.

How to Compress MP3?

The following part will show a step by step guide on how to compress MP3 to smaller file size. This guide applies to:

  • Compress MP3 files on Mac OS X Yosemite, Mavericks, Mountain Lion, Lion, Snow Leopard, Leopard, and Tiger.
  • Reduce MP3 file size on Widows 10, 8, 7, Vista, XP etc
  • Compress MP3 as well as keep the original MP3 format and audio quality.
  • Compress MP3 audio as well as convert MP3 to other audio format like compress MP3 to AAC, WMA, AAC
  • Subtitle Editor Windows version helps editing subtitle on Windows 10, 8, 7, Vista, XP etc
  • Besides compressing MP3, this professional MP3 Compressor also can compress other audio format like WAV, AAC, AIFF, M4A, Apple Lossless, FLAC, OGG, APE, DTS, WMA and etc.
  • Besides compressing MP3 audio files, this powerful MP3 Compressor also can compress video file size.

Make Preparation: Free download MP3 Compressor

Free download the best MP3 Compressor - iDealshare VideoGo(for Mac , for Windows), install and run it, the following interface will pop up.

the best Subtitle Editor - iDealshare VideoGo

Step 1 Add MP3 files

Click "Add" button to add MP3 files you want to compress to smaller file size.

How to Compress MP3 to Reduce MP3 File Size?

Step 2 Choose the compression degree

There are two methods to compress MP3 audio files:

Method 1: Compress MP3 by adjust audio sample rate

  • Click "Setting..." button to open "Advanced Settings" window;
  • Then switch to the "Advanced Settings" panel to find the "Sample Rate" option under "Audio Codec".
  • Double click "48000" box on the right side of "Sample Rate" to select smaller sample rate that you want from the drop-down list. Or overwrite your desired sample rate;
  • Click "Apply to All" and OK to finish the setting.
  • Method 2: Reduce MP3 file size by change audio bitrates

  • Follow the steps just as the method 1 "Setting..." ->"Advanced Settings" -> "Advanced" tab -> "Audio Codec" box -> " Bitrate"
  • Double click "192K" box on the right side of "Bitrate" to select smaller bitrate that you want from the drop-down list. Or enter your desired bitrate;
  • Click "Apply to All" and OK to finish the setting.

Note: The higher compression degree is, the worse MP3 quality is

Step 3Set MP3 as output format

Click "Profile" button to select MP3 MPEG Layer - 3 Audio (*mp3) from the "General Audio" button. You can also select other audio format if you like.

Step 4 Finish compressing MP3

Click "Convert" button to start and finish MP3 compression.