Your Complete Video Toolbox

Wondershare UniConverter (originally Wondershare Video Converter Ultimate)

  • Compress M4A audio file size and convert to MP3 or other 1000+ formats.
  • Reduce M4A file size by changing bit rate, sample rate, encoder, and channel.
  • Support batch conversion and compression process with super fast speed.
  • Transfer M4A files from PC/Mac to iPhone/iPad/Android devices easily via a USB cable.
  • Versatile toolbox combines DVD Burn, Screen Recorder, GIF Maker, Fix Video Metadata, etc.
compress M4A audio files

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

4 Ways to Compress M4A Files on Windows/Mac and Online

You are most likely to find the M4A audios in iTunes. It is the Apple iTunes Store which stores the audio files in the M4A format alongside with AAC. However, it can't be played on many platforms like MP3, that is to say that it's only compatible with some Apple devices. To play M4A files on a different platform, you need to convert the M4A format and compress M4A file. If you're looking for a solution like this, you'll find the best free and online ways on how to compress M4A audio files so that they can be stored and shared easily.

Part 1. Best M4A Compressor to Compress M4A on Windows/Mac Without Losing Quality

The best tool you can use for M4A compression is Wondershare UniConverter (originally Wondershare Video Converter Ultimate), which is a complete utility toolkit allows video/audio converting, compressing, downloading, transferring and editing. You can easily compress your M4A and other 1,000+ audio files without any quality loss. It also helps to convert audio format, change audio encoder, bit rate, and more other settings. Wondershare UniConverter is an all-in-one solution for all the multimedia requirements, which has additional functions like DVD burning, GIF maker, Fix Media Metadata, etc. You can download the software on your computer as it has support for both Mac and Windows latest OS.

Wondershare UniConverter - Your Complete Video Toolbox for Windows/Mac

  • Compress M4A audio files easily with changing bit rate, encoder, channel, sample rate, etc.
  • Convert M4A to other 1,000+ audio/video formats with simple steps.
  • Compress M4A file size with super fast speed and no quality loss.
  • Transfer compressed M4A files to iPhone/iPad/Android devices directly via a USB cable.
  • Download YouTube videos and playlist and convert to M4A by pasting URL.
  • Supports batch processing to compress and convert multiple audio files at a time.
  • Toolbox with additional functions like Screen Recorder, GIF Maker, Fix Media Metadata, Cast to TV, and more.
  • Supported OS: Windows 10/8/7/2003/Vista/XP, Mac OS 10.15 (Catalina), 10.14, 10.13, 10.12, 10.11, 10.10, 10.9, 10.8, 10.7, 10.6.
Security Verified. 5,481,347 people have downloaded it.

Steps on How to Compress M4A Files on Windows/Mac Easily

Step 1 Add M4A Files to Wondershare Compressor

Launch Wondershare M4A Compressor on your PC/Mac, and the Convert tab will open up by default. Click on the +Add Files button to add your local M4A audio files. Or you can directly drag and drop the M4A files you want to compress to the software interface. You can add multiple audio files here.

add M4A audio files

Step 2 Choose M4A/MP3 as Output Format

Now click on the Convert All Files to: option on the right side and a drop-down menu will open up. Select the Audio tab and select MP3 as the output format or M4A to keep original.

choose output format

Step 3 Customize Compression Settings

Click on the Create Custom button and a small window will appear on the screen. In that window, you can change the sample rate, bit rate, channel, and sample rate of the added M4A audio file to reduce file size. Then click on the Create button to save the changes.

changing M4A compression settings

Step 4 Compress M4A Files

After you have selected the format and changed the compressed settings, click on the Convert All button at the bottom of the screen to compress and convert M4A audio files.

compress and convert m4a files

Part 2. How to Compress M4A File Online and Free

But if you don't want to go through the download and installation process, there are always methods available to compress M4A file online. Here are the top 3 recommended online and free tools that would compress the audio files easily and quickly.

1. Online UniConverter (originally Media.io)

Online UniConverter (originally Media.io) is the best audio compressor and converter to compress M4A, MP3, WAV, M4B, FLAC files online and free. You can reduce M4A file size by customizing audio qulity from 32Kbps to 320Kbps as you need, which will decide the output size. Another way to downsize M4A audio files is changing the audio format to a smaller one such as MP3, FLAC, etc. Follow the simple steps to compress M4A online without losing quality.

compress M4A online - Online UniConverter (originally Media.io)

Steps to compress your M4A without losing quality using Online UniConverter (originally Media.io).

Step 1: Open Online UniConverter (originally Media.io) (https://www.media.io/audio-compressor.html) from your web browser, click the Add your files button to import an M4A file you need to compress.

Step 2: After that, choose the M4A audio quality and format for your output settings from the drop-down lists.

Step 3: Finally, click on the Compress button to reduce M4A file size online and free. You can download the compressed M4A file directly or save it to Dropbox.

2. Audio Converter

This online Audio Converter is a free online service that can easily convert and compress the files to and from any format. The platform has a variety of options and advanced settings to configure the quality, bit rate, frequency, and other options too. The website can convert over 300 file formats and can even extract audio file from videos. You can use this platform as M4A compressor as it is entirely safe.

compress M4A online - Audio Converter

Follow the steps below to compress your M4A audio files online using Audio Converter.

Step 1: Open the link and click on the Open files option on the screen. You can also add files to the website interface from Google Drive, Dropbox or directly copy the link from any website. The file will be uploaded on the website in a minute.

Step 2: Now, move the cursor along the line to change the quality of the audio file. You can select among Economy, Standard, Good, and Best quality. And select the format from the above list.

Step 3: You can also click on the Advanced Setting option to change the bit rate and sample rate of the audio file. The tool will also give you options to edit the track info.

Step 4: Finally click on the Convert option and the audio file will be compressed and converted accordingly.

3. AConvert

Another tool that can compress M4A to MP3 format is AConvert. The main purpose of this website is to convert the file format. But in between, you will also have the option to change the compression settings so that you can reduce the file size. It is a very fast and safe tool. The users can use this online platform for the conversion of files from M4A format to various other formats still maintaining the quality of the files.

compress M4A online - AConvert

Steps to reduce M4A audio file size online with AConvert.

Step 1: Visit the link and the home page of the website will open up. Click on the Choose File option to add the file to the website interface. You can add files from local storage, online websites, Google Drive or Dropbox.

Step 2: Once you have added the audio file, select the target format and choose the suitable audio bit rate and sample rate for the audio file.

Step 3: After you have specified the changes, click on the Convert Now button and the tool will start converting and compressing the file. You will be able to see the ongoing process and once the process is complete, you will be able to download the same file in a different format and reduced size.

Part 3. General Knowledge about M4A

There are many people who still don't know much about the M4A format. It is an extension used to represent the audio files in the MPEG-4 container. M4A format contains only audio and it is popularly used by Apple Inc for the songs and ringtones embedded in iTunes. Even the extension M4A stands for MPEG-4 Audio. These files are unprotected and can be decoded to original quality before it is compressed. The files are compressed in M4A format to provide lossless encoding in less space.

As a matter of fact, M4A format is considered as the successor of the MP3 format. But the M4A format can compress audio in a smaller size with exactly same bit rate. It is known that the M4A files with ALAC compression have the best quality and that's why it is preferred over MP3 format. The M4A format is great for audio quality and it doesn't even occupy a lot of storage, the only area where it lags is the application. The compatibility of the MP3 files is far superior then M4A files and that's why we need M4A compressor and converter.

Conclusion: Now you have known that even though the M4A files are great for use, they are limited to PC and some non-Apple devices. That's when the other tools come into play. So, if you ever need to compress M4A file or change its format, then you can use any of the above-listed tools as all of them will work fine. As online compressor tools always have file limitation, you'd better choose Wondershare UniConverter (originally Wondershare Video Converter Ultimate) if you have big M4A files and want to compress and convert in batch.

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