Your Complete Video Toolbox

Wondershare UniConverter

  • Compress audio files in 1000+ format without losing any quality.
  • Reduce audio size by changing bit rate, sample rate, channel, and encoder.
  • Support batch conversion and compression process.
  • Download YouTube videos to MP3 or other audio formats by pasting URL.
  • Versatile toolbox combines DVD Burn, Screen Recorder, GIF Maker, Fix Video Metadata, etc.
best alternative to online audio compressor

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 8 Audio Compressor Online and Free 2019

by Christine Smith • Nov 15,2019 • Proven solutions

Audio files are usually referring to the music files. Sometimes, when we download audio and music files from the internet they are downloaded in very high quality which makes it difficult for you to share the songs. As this reason, many people are looking for the best audio size compressor for Windows/Mac or online. In this article, we are going to explore the top 7 audio compressors online and the best alternative to all online tools.

Part 1. Best Alternative to Compress Audio Files in Batch Easily

The best alternative to online audio compressor is Wondershare UniConverter (originally Wondershare Video Converter Ultimate). It is an an-in-one tool which can fulfill various audio and video requirements. Whether you want to convert the format of the files, reduce the size, burn it to disc, or transfer the files into some other device, Wondershare UniConverter can do it all. This software is a complete utility kit for media files. It's available for both Windows and Mac users, so you can use it to compress audio file size without losing quality easily and quickly.

Wondershare UniConverter - Your Complete Video Toolbox for Windows/Mac

  • Compress audio file size without losing any quality on Windows/Mac.
  • Reduce audio file size by changing bit rate, sample rate, encoder, and other parameters.
  • Convert and compress audio files in 1,000+ formats including MP3, WAV, M4A, M4B, etc.
  • 30X faster compressing speed than any audio compressor.
  • Download YouTube videos and playlist to MP3 or other audio formats by pasting URL.
  • Transfer compressed audio files from PC/Mac to iPhone/Android devices via a USB cable.
  • Supports batch processing to compress and convert multiple videos at a time.
  • Toolbox with additional functions like Screen Recorder, GIF Maker, Fix Media Metadata, Cast to TV, etc.
  • 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 to Compress Audio Files Using Wondershare UniConverter

Step 1 Launch the Software and Add Audio Files

Once the Wondershare UniConverter (originally Wondershare Video Converter Ultimate) is installed, run it on your PC/Mac, the Convert tab will open up automatically. Click on the Add Files button and locate your audio files from the storage. You can select multiple files at the same time.

add audio files to compress

Step 2 Choose Output Audio Format

Click on the Convert All Files to: button and click on the Audio tab. From the options, select the format you want to convert.

select audio output

Step 3 Customize Audio Compression

You can find the +Create Custom option on the format list. Tap on that option and a small window will open up. In the window, you can customize the audio encoder, sample rate, channel and bit rate. Give a title to the customized size and save it.

Customize Audio Compression

Step 4 Convert Audio Files in Batch

Once you have finalized all the changes, click on the Convert All option at the bottom of the interface and all the file size and formats will be converted in batch. The process will be finished within a few minutes.

Convert Audio Files in Batch

Part 2. Top 7 Online Audio Size Compressors You Should Know

There are various online tools available that can compress the size of audio files easily and quickly. Let's take a look on the list of online tools we have gathered for file compression.

1. MP3Smaller

To shrink audio file size online, MP3Smaller is a very useful service which is also free. With the help of this tool, you can reduce the size of MP3 audios. Just click on the Browse button and upload your file on the website after selecting the bit rate. You can customize the file size within the bit rate list. You won't have to register for an account or have to pay a fee to download the reduced size file. You can upload the file of up to 150 MB without any restriction and the files will be deleted after a few hours.

online audio compressor - MP3Smaller

2. Online Audio Converter

This website is designed as a multipurpose platform for file conversion and compression. So, if you want to compress an audio file online for free, then you can use this website. You can browse your files from URL, Google Drive, Dropbox, and system storage too. Just load the file in the interface and select the format and quality. You will also have options to edit the track info and change advanced settings such as bit rate, sample rate, channels, and effect. Finally, click on the Convert option and your files will be compressed as quickly as possible.

online audio compressor - Online Audio Converter

3. YouCompress

If you want a simplified and easy audio size compressor then there is no better option than YouCompress. Just select the file from the storage and upload the file and compress it. The file will be compressed in a matter of seconds depending on the size of the file. The file compression size will be automatically decided by the server. You can compress the size up to 66%. After downloading you can manually delete the file from the server too.

online audio compressor - YouCompress

4. Gary's Hood

It is another convert and compresses audio file online tool. This tool can easily compress audio files of various formats including WAV, MP3, AIFF, AAC, etc. into any other format. The platform won't even save your files for a minute. The files will be converted within a while and as soon as you download the files it will be erased completely. You have to manually save the file in your storage. You can customize the bit rate and output format according to your needs. The maximum bit rate is limited to 256 kbps and the maximum file size is limited to 8MB.

online audio compressor - Gary's Hood

5. AConvert

AConvert is another audio compressor online which offer you a variety of options to reduce the file size. You are free to choose the files from local storage, online file, Google Drive, and Dropbox. Once you have loaded the file in the website interface, you can customize the target format. Audio bit rate and sample rate according to your requirements. Finally, tap on the Convert Now option and you will be able to reduce the file size. Once the file is compressed you can either directly save the files on Cloud storage or save it in the system storage.

online audio compressor - AConvert

6. Compress MP3 Online

Compress MP3 Online is also a very useful tool. It can compress audio file online for free, but has a file size limitation over the audio files. As long as your files are up to 150 MB you can easily compress them to reduce their size. The online tool will reduce the file size by changing the bit rate of the audio file. You can select the bit rate from a variety of options. So, whether you want to reduce the file size to save it on your Android phone or iPhone, you can convert the format of the file accordingly. Plus, the files compressed by the website will be deleted after a few hours.

online audio compressor - Compress MP3 Online

7. Online Convert

When we are discussing the most suitable online audio size compressor, how can we forget the multi-purpose converter platform? Online-Convert.com is a very useful and comparatively effective audio file converter and compressor. You can upload the file on the website server and wait while is it uploaded. You can also load the files from URL, Google Drive, and Dropbox too. Once the file is uploaded, you can use the optional settings to change audio bit rate, sample rate, channels, and can also trim and extract audio from video files. If you want to save your settings, then the platform also offer you a registration service which is also free.

online audio compressor - Online Convert

Part 3. Comparison Between Desktop and Online Audio Compressor

To help you to decide which tool is the best audio size compressor, we are providing them with a comparison table. In this table, we have measured all the metrics which determine the reliability of the compression tool.

Features/Tools Wondershare UniConverter MP3Smaller Online Audio Converter YouCompress Gary's Hood AConvert Compress MP3 Online Online Convert
Supported System Mac and Windows Online Online Online Online Online Online Online
Audio Formats Over 1000+ audio formats including MP3, WAV, M4A, etc. Only MP3 8 Formats Only MP3 More than 30 formats More than 10 formats Only MP3 Almost 50 formats
Customize Compression Settings Compress bit rate, file size, output format, sample rate, channel, encoder, etc. Only bit rate Bit rate, sample rate, and channel. No customization Bitrate and Output format Format, audio bit rate, and sample rate Only bit rate Bit rate, sample rate, channel, and edit option
Compress Quality Full quality without any loss Average Average Can’t be customized therefore bad quality Average Average Good Good quality
Compress Speed 30 times faster Normal speed Good Good Slow Slow Normal Speed Good
Batch Compress Yes, batch compress without limits Yes No No No No No No
File Size Limitation No 150 MB of files No Up to 150 MB 8 MB per file Up to 200 MB Up to 150 MB No
Network Situation Not rely on network connection Highly dependable Highly dependable Highly dependable Highly dependable Highly dependable Highly dependable Highly dependable

Conclusion: From the comparison table, it is pretty clear that Wondershare UniConverter (originally Wondershare Video Converter Ultimate) is a far better tool than online audio compressors. Therefore, it is recommended to use this tool as it has no file size restriction and offers various other functions. For learning more audio compressors, you can read the introduction of the Top Free Audio Compressors >> to know more.

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Christine Smith

Christine Smith

chief Editor

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