Your Complete Media Toolbox

Wondershare UniConverter (originally Wondershare Video Converter Ultimate)

  • Reduce MP3 file size without losing quality on Windows/Mac.
  • Compress audio/video files by adjusting bit rate, frame rates, encoder, format, etc.
  • Download videos online to MP3 directly by pasting URLs.
  • Transfer MP3 music between computer and phone devices easily via a USB cable.
  • Versatile toolbox combines screen recorder, GIF maker, fix video metadata, etc.
compress MP3 file size

Compress Videos

1. Compress Video/Audio in Different Formats+
  1. 1.1 Compress MP4 on Winodws & Mac
  2. 1.2 Reduce Size of MP4
  3. 1.3 Resize MP4 Videos Online
  4. 1.4 Compress MP4 Online
  5. 1.5 Free MP4 Compressors
  6. 1.6 Compress FLV
  7. 1.7 Compress MKV
  8. 1.8 Compress MOV
  9. 1.9 Compress MOV Online
  10. 1.10 Compress WMV
  11. 1.11 Comrpess M4V
  12. 1.12 Compress MPEG/3GP
  13. 1.13 Compress H264 File
  14. 1.14 Compress AVI File
  15. 1.15 Reduce Size of MKV
  16. 1.16 Top 5 WebM Compressors
  17. 1.17 Compress WAV Free Online
  18. 1.18 FLAC Compression Software
  19. 1.19 Top 5 Online MP3 Size Reducers
  20. 1.20 Compress M4A Files Free Online
2. Compress Video from Devices/Apps +
  1. 2.1 Compress iPhone Video
  2. 2.2 Compress Camcorder Video
  3. 2.3 Compress GoPro Video
  4. 2.4 Compress QuickTime Video
  5. 2.5 Compress Fraps Video
  6. 2.6 Top 12 File Compressor for Android
  7. 2.7 MMS Video Size Limit for iPhone/Android
  8. 2.8 Shorten Videos on iPhone
  9. 2.9 10 Video Compressor App Android/iPhone
  10. 2.10 Top 8 Video Size Reducers for Android
3. Compress Video with Different Apps +
  1. 3.1 Resize Video in iMovie
  2. 3.2 Make VLC Resize Video
  3. 3.3 Make Windows Movie Maker Resize Video
  4. 3.4 Different Apps to Compress Video
  5. 3.5 Compress Videos with Windows Media Player Alternatives
  6. 3.6 Use FFmpeg to Resize Video
  7. 3.7 Apple Compressor 4 Alternative
  8. 3.8 Top 6 Clipchamp Alternatives
  9. 3.9 Top 7 Video Cutter and Compressor
  10. 3.10 HandBrake Video Compressor Alternative
4. Compress Video for Different Purposes +
  1. 4.1 Compress Video for Email
  2. 4.2 Compress Video for Web
  3. 4.3 Compress Video for YouTube
  4. 4.4 Compress Video for Vimeo
  5. 4.5 Compress Video for Facebook, Instagram
  6. 4.6 Twitter Video Compression
  7. 4.7 Resize Facebook Video Size
  8. 4.8 Resize Instagram Video Size
  9. 4.9 Compress YouTube Video Size
  10. 4.10 Compress Video for DVD
  11. 4.11 Send Large Files via Email
  12. 4.12 Compress Files for WhatsApp
  13. 4.13 Send Long Videos on WhatsApp
5. Other Tips & Tricks +
  1. 5.1 Full Guide to Compress Video
  2. 5.2 Free Video Compressors
  3. 5.3 Top 7 Video Compressors
  4. 5.4 Top 10 Video Compressor for Mac
  5. 5.5 Top Audio Compressors
  6. 5.6 Top 8 Audio Compressor Free Online
  7. 5.7 Compress Files to Small Size
  8. 5.8 Compress HD/FHD (4K/1080P) Videos
  9. 5.9 Compress A Video
  10. 5.10 Compressed Video Formats
  11. 5.11 Top 8 Compression Software 2019
  12. 5.12 Top 9 File Compressors
  13. 5.13 How to Make A File Smaller
  14. 5.14 How to Make Video Smaller
  15. 5.15 Lossless Compression
  16. 5.16 Top 10 Ways to Reduce Video Size
  17. 5.17 Compress Files & Folders
  18. 5.18 Compress Folder Online and Free
  19. 5.19 Top 6 Online Size Converters
  20. 5.20 Top 10 Ways to Send Large Videos
  21. 5.21 Top 5 Video Resizer
  22. 5.22 Top 6 File Size Reducer
  23. 5.23 Shorten a Video Online and Free
  24. 5.24 Change MP4/MP3 Bitrate
  25. 5.25 11 Ways to Compress Videos Free Online

Top 6 MP3 Compressor to Compress MP3 Online

Reducing the size of MP3 audio files means creating extra space on your devices to accommodate more audio files. File storage and management are among the major issues for all the music enthusiasts, DJs, podcasts producers, and musicians. In such situations, the role of MP3 compressor becomes important. There is a list of options available when you want to compress MP3 online as online tools are always free and easy to use. Depending upon your requirements, you can pick the best suited MP3 size reducer no matter it is online or desktop. So if you are in search for the best ways on how to reduce MP3 file size, read below to get detailed information.

Part 1. Best MP3 Compressor to Reduce MP3 File Size Without Quality Loss

Online MP3 reducer is simple and convenient tools to use, but they come with their share of limitations. Since the majority of these tools are free to use, they support a limited number of files and size and have no additional features. So if you are looking for a professional solution that performs better than those online tools as an alternative, Wondershare MP3 Reducer will prove to be a good option. It not only supports reducing MP3 file size without quality loss, but provides an array of features as a complete video toolbox.

video converter logo Wondershare UniConverter (originally Wondershare Video Converter Ultimate)

wondershare video converter ultimate
  • Compress MP3 and other 1000+ audio files with super fast speed and no quality loss.
  • Reduce MP3 file size by changing bit rate, sample rate, encoder, channel and other parameters.
  • Transfer compressed MP3 files from PC/Mac to Android/iPhone devices easily via a USB cable.
  • Download YouTube videos and playlists to MP3 directly by pasting URLs.
  • Convert videos to MP3 and vice versa within 3 simple steps.
  • Versatile toolbox combines fix video metadata, GIF maker, cast video to TV, DVD burning, and screen recorder.
  • Supported OS: Windows 10/8/7/XP/Vista, Mac OS 10.14 (Mojave), 10.13, 10.12, 10.11, 10.10, 10.9, 10.8, 10.7, 10.6.
Security Verified, 5,942,222 people have downloaded it

How to Decrease MP3 Size Using Wondershare UniConverter (originally Wondershare Video Converter Ultimate)

Step 1 Add MP3 to Wondershare MP3 Compressor

Install and launch Wondershare UniConverter (originally Wondershare Video Converter Ultimate) on your PC/Mac first, then click on the +Add Files button under the Convert tab to browse for your desired MP3 files (you want to reduce in size) from local computer.

Add MP3 files to compress

Step 2 Adjust MP3 Settings to Smaller Size

Click the Inverted triangle icon button beside the Convert all files to: option and go to the Audio > MP3 to select the Low Quality option. You can select other audio format here if you want to change the format.

Select output format

To further optimize the MP3 parameters, you can either click the Edit icon or the +Create Custom button to get the Setting window, where you can change the number of Encoder, Channel, Bitrate, Sample Rate. Once all settings are done, click on the Create button to proceed.

Customize audio settings

Step 3 Start Compressing MP3 File Size

Now you can easily tell the file size changes just as the screenshot shows, hit the Convert All button to start reducing MP3 size immediately. Upon successfully reducing MP3 file size, the file can be checked and managed under the Converted tab.

Start mp3 file compression

Part 2. 5 Common MP3 Size Reducers to Compress MP3 Online Free

Many people don't have advanced requirements to reduce MP3 file, then many free services that allow you to reduce MP3 file size online, compress mp3 audio files online are available. These useful services can fit more songs on your MP3 player by reducing the MP3 audio bit rate. The top 5 online MP3 compressors are listed below:

  1. MP3Reducer
  2. Online Audio Converter
  3. Garyshood Music Convert
  4. ezyZip
  5. Online Convert

1. MP3Reducer

MP3Reducer is a free online MP3 compressor that works by reducing MP3 audio bit rate. The program has simple to use interface, where you just need to add the MP3 file, select desired quality output file defining Bitrate. Maximum of up to 150MB files can be uploaded over the program.

MP3Reducer - Online MP3 Size Reducers

Key Features:

  • Free to use.
  • No need for registration or installation.
  • Quickly reduces MP3 file size by reducing bit rate.
  • After a few hours, the uploaded files are automatically removed.

2. Online Audio Converter

This is another online app that is free to use and helps to reduce the size of MP3 online. The app supports an array of formats and support file conversion as well. Once the audio files are added to the app, its quality, number of channels, bit rate, frequency, and other parameters can be changed to shrink its size. It also allows removing a voice from the audio track. To ensure the safety of your uploaded files, they are automatically deleted after a few hours from the servers.

Online Audio Converter- Online MP3 Size Reducers

Key Features:

  • Free to use app without any need for installation.
  • Support batch processing of files.
  • Allows converting files to other formats.
  • Provides tag support by changing the name of the track, album year, artists name and other details.

3. Garyshood Music Convert

Garyshood Music Convert is a free online MP3 compressor and a converter that performs the very basic function. Maximum of up to 8MB of audio can be added to the program and max bit rate supported is 256kbps. The program supports the majority of the sound formats including MP3, WAV, AAC, AIFF, and others.

Garyshood Music Convert - Online MP3 Size Reducers

Key Features:

  • No need for any registration and installation.
  • The max audio size is 8 megabytes.
  • Supports the maximum bit rate 256kbps.

4. ezyZip

ezyZip is a decent online compression tool that also works as a great MP3 shrinker online, The program allows zipping and unzipping files as needed. Uploading or downloading files to the server is not needed on ezyZip as it runs as a HTML5/ja_x_vascript app locally in your browser. The process of shrinking files is very fast using the tool. Once the files are archived you can save them to your local drive.

ezyZip - Online MP3 Size Reducers

Key Features:

  • Free to use online program.
  • Allows zipping and create archive of files.
  • Fast compression speed.

5. Online Convert

Online Convert is a free tool that converts your files to the Zip format. The program allows adding the file directly or by providing its link. Additionally, files can also be added from Dropbox or Google Drive. Password protected archives are not supported by the program. Online Convert also allows converting an archive to another compressed archive. Once the files are zipped they can be saved on local PC.

Online Convert - Online MP3 Size Reducers

Key Features:

  • Free to use.
  • No need for any registration or installation.
  • Support adding file links, files from Dropbox and Google Drive in addition to local files.
  • Archives can be converted to other compressed archives.

Part 3. All-rounded Comparison for Above 6 MP3 Size Reducers

Above listed are professional software and top 5 online MP3 file compressors. Selecting one of the 6 programs entirely depends upon your use and requirements. To make the selection process a little easier, the comparison of the above listed 6 methods is given in the table below. Know your needs and select the best-suited method.

Name of the tool/Features Wondershare UniConverter (originally Wondershare Video Converter Ultimate) MP3Reducer Online Audio Convert GaryshoodMusic Convert ezyZip Online Convert
Paid/Free Free trail version with paid version to enjoy all features Free Free Free Free Free
Requires Internet connection No need, can work offline. Yes Yes Yes Yes Yes
Quality of output file Lossless quality Good Good Reduced Decent Good
Speed of compression very fast Decent Decent Average Fast Good
Compression method By cropping and trimming files, reducing bit rate, frame rates, resolutions, channel number, and sample rate By reducing bit rate By editing bit rate, number of channels, frequency, and other parameters By reducing bit rate By archiving and creating zip file By archiving and creating zip file
Additional features Complete video toolbox with features to convert, download, burn and edit videos, fix metadata info, record video, and more no additional features Allows to convert files to other format and tag them as well Convert audio files to other limited formats no additional features Creates archives to other compressed archive/ Support adding files from Google Drive and Dropbox
Input file size limitation No limitation Yes, up to 150MB No Yes, up to 8MB No No
Batch processing Yes No Yes No No No

We ensured to clear all your doubts and queries on how to compress MP3 files with the above article. Shrink your files a little and create an extra space to add some more of your favorites.

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