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Home > Movie Users>Best MKV Video Compressor: How to Compress MKV Files without Quality Loss


1. Play MKV on Device+
  1. 1.1 Top MKV Player
  2. 1.2 Play MKV on Mac
  3. 1.3 Play MKV on Apple TV
  4. 1.4 Play MKV on Samsung TV
  5. 1.5 Play MKV on Sony TV
  6. 1.6 Play MKV on LG TV
  7. 1.7 Play MKV on PS3
  8. 1.8 Play MKV on Xbox One
  9. 1.9 Play MKV on Xbox360
  10. 1.10 Play MKV to iPhone
  11. 1.11 Play MKV to iPad
  12. 1.12 Play MKV on iPod
  13. 1.13 Play MKV on Android Phone
  14. 1.14 Play MKV in VLC
  15. 1.15 Play MKV in Windows Media Player
  16. 1.16 MKV Playback Issues in VLC
2. Convert MKV to Other Format+
  1. 2.1 Convert MKV to MP4
  2. 2.2 Convert MKV to MP4 on Mac
  3. 2.3 Convert MKV to MP4 Online
  4. 2.4 Convert MKV to MP3
  5. 2.5 Convert MKV to Audio
  6. 2.6 Convert MKV to WMV
  7. 2.7 Convert MKV to M4V
  8. 2.8 Convert MKV to AVI
  9. 2.9 Convert MKV to AVI Online
  10. 2.10 Convert MKV to FLV
  11. 2.11 Convert MKV to DVD
  12. 2.12 Convert MKV to MOV
  13. 2.13 Convert MKV to iTunes
  14. 2.14 MKV to MOV Converter Online
  15. 2.15 Convert MKV to VOB
  16. 2.16 Convert MKV to DivX
  17. 2.17 Convert MKV to MPEG
  18. 2.18 Convert MKV to MPEG2
  19. 2.19 Convert MKV to MPEG4
  20. 2.20 Convert MKV to XviD
  21. 2.21 Convert MKV to 3GP
  22. 2.22 Convert MKV to M2TS
  23. 2.24 Convert MKV to TS
  24. 2.25 Convert MKV to VCD
  25. 2.26 Convert MKV to AC3
  26. 2.27 Burn MKV to DVD
  27. 2.28 Burn MKV to Blu-ray
  28. 2.29 Convert MKV to SWF
  29. 2.30 Convert MKV to MP4 with Subtitle
  30. 2.31 Convert MKV to WAV
  31. 2.32 Convert MKV to MPG
  32. 2.33 Convert MKV to ISO
  33. 2.33 Convert MKV to WebM
3. Convert Other Format to MKV+
  1. 3.1 Convert MP4 to MKV
  2. 3.2 Convert MP4 to MKV on Mac
  3. 3.3 Convert MP4 to MKV Online
  4. 3.4 Convert M4V to MKV
  5. 3.5 Convert WMV to MKV
  6. 3.6 Convert MOV to MKV
  7. 3.7 Convert DVD to MKV
  8. 3.8 Convert M2TS to MKV
  9. 3.9 Convert AVI to MKV
  10. 3.10 Convert FLV to MKV
  11. 3.11 Convert AVCHD to MKV
  12. 3.12 Convert OGM to MKV
  13. 3.13 Convert MTS to MKV
  14. 3.14 Convert WTV to MKV
  15. 3.15 Convert VOB to MKV
  16. 3.16 Convert RMVB to MKV
  17. 3.18 Convert WebM to MKV
4. Edit MKV & Other Tips+
  1. 4.1 Extract Subtitles from MKV
  2. 4.2 Add Substitles to MKV
  3. 4.3 Add SRT to MKV
  4. 4.4 Compress MKV Video
  5. 4.5 Reduce MKV File Size
  6. 4.6 Cut MKV Files
  7. 4.7 Edit MKV Metadata
  8. 4.8 MKV No Sound
  9. 4.9 MKV Video Player for Android
  10. 4.10 MKV Converter for Mac
  11. 4.11 Free MKV Converter
  12. 4.12 MKV Player Mac
  13. 4.13 2D to 3D MKV Converter
  14. 4.14 Remux MKV
  15. 4.15 MKV Encoder
  16. 4.16 Convert MKV to FCP Mac
  17. 4.17 Stream MKV to TV with Chromecast
  18. 4.18 Import MKV to iMovie
  19. 4.19 Windows DVD Maker MKV
  20. 4.20 Convert MKV to MP4 with HandBrake Alternative
  21. 4.21 What is an MKV File

Best MKV Video Compressor: How to Compress MKV Files without Quality Loss

by Kayla Morrison • 2024-01-11 10:28:32 • Proven solutions

Nowadays, movies or TV shows streamed over the Internet are increasingly seen in MKV extensions, particularly for high-definition sources (1080p). But its flat body may cause trouble when viewing it back. Maybe your old CPU is impossible to watch such HD 1080p movies/videos. Or your portable gadget like HTC, Samsung Galaxy, etc. has limited space to store them. Normally, you'll try some MKV video compressors for emails or pictures like 7-zip, Xarchiver, WinRAR, WinZip, etc. However, the MKV file format is already highly compressed and will not benefit from further compression. What to do?

Professional video compressor tools can help you reduce MKV file size further, which is faster and more secure than online tools for MKV compression. In this article, you'll find the best MKV compressor and other free online solutions to shrink MKV videos easily and quickly.

(Here's more information about the video compressor you want to know)

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Part 1. How to Compress MKV Files Without Losing Quality on Windows/Mac

Actually, all you need is this stylish and intuitive MKV compressor - Wondershare UniConverter (originally Wondershare Video Converter Ultimate). It helps to shrink MKV files greatly and quickly by adjusting the encoder, bit rate, resolution, frame rate, and getting rid of the unwanted part. Wondershare MKV compressor is compatible with both Windows and Mac systems so that you can reduce MKV file size easily without any limitation. It supports 1000+ video and audio formats for you to compress and convert formats, you can edit videos with real-time preview and convert MKV videos with more features.

Wondershare video compressor

Wondershare UniConverter - All-in-One Video Converter

Security Verified. 5,481,347 people have downloaded it.
  • Compress MKV files by changing video resolution, bit rate, encoder, video quality, cropping and trimming, converting formats, etc.
  • Shrink MKV videos with super fast speed and no quality loss on Windows/Mac.
  • Support 1000+ video/audio formats including MKV/MP4/MOV/AVI/WMV/MPEG for compression and conversion.
  • Toolbox with additional functions like Screen Recorder, VR Converter, GIF Maker, Fixing Media Metadata, and more.
  • Supported OS: Windows 10/8/7/XP/Vista, macOS 11 Big Sur, 10.15 (Catalina), 10.14, 10.13, 10.12, 10.11, 10.10, 10.9, 10.8, 10.7.

Steps to Compress MKV Files Using Wondershare UniConverter:

Step 1 Launch Wondershare MKV Compressor

After you've downloaded and installed Wondershare UniConverter on your PC/Mac, launch it and choose the Compressor section first. You can click on the + icon on the window to add the MKV video you want to compress. You can also drag and drop the MKV video to the interface directly.

Launch Wondershare MKV compressor

Step 2 Customize Settings for MKV Compression

You can see the added MKV video information on the Compressor window. Change the parameters like video resolution, bit rate, file size, format, and others directly or by moving the progress bar.

  • File Size: Click the arrow to add or reduce the file size, or input the number directly to change the MKV file size.
  • Format: You're allowed to convert MKV to other formats like MP4/AVI/MPEG/WMV, for the more supported format, move to the How to Convert and Compress Videos to learn more.
  • Resolution: Change MKV video resolution to 480*320, 640*480, 720*480, 240*160, and more.

customize MKV compression settings

Step 3 Compress MKV File Size

You're allowed to check your compressed MKV video for 20 seconds by clicking on the Preview button. Finally, tap on the Compress button to compress MKV video size.


If you want to know more ways to compress MKV files, please move to How to Reduce MKV Size without Any Quality Loss >> to learn more.

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Part 3. Other 3 Ways to Shrink MKV Files Free

There are other free tools that would allow you to compress MKV files for free. Some open-source video tools with compress functions are reliable and completely free. As the MKV files are big and heavy, after compression you will have the same file in a smaller size. Here are the 3 best methods to compress the MKV files for free.

1. Wondershare Free Video Converter

Wondershare Free Video Converter is the free version of Wondershare UniConverter, both of them have similar functions and interface, you can even follow the same steps in Part 1 to compress MKV video for free with Wondershare Free Video Converter. It can be used on both Windows and Mac systems, and it also has many additional functions such as Video Download, Video Transfer, DVD Burn, and some small tools. MKV and other 1000+ video formats are supported by this free MKV compressor, you're allowed to compress MKV to MP4 easily with this free MKV compressor.

Free tool to compress MKV


  • Compress MKV videos free with fast speed and high-quality output.
  • Trim and crop MKV files before compressing.
  • Change video resolution, bit rate, quality, format to reduce MKV file size for free.


  • It has a watermark on the video like most free tools.

2. HandBrake

HandBrake is another tool that is open-source and hence can be used on any OS. The software even has custom presets that would allow you to change the size of the media files quickly. The main function of the software is transcoding. HandBrake can easily process the common and popular media file format including MKV. It is one of the best and most useful cross-platform media converter and compressor to compress MKV on Mac. You can choose among a variety of options and can significantly reduce the video size.

compress MKV files with HandBrake


  • The software also supports batch scan and queuing.
  • It can change the bit rate of the video without affecting the quality.


  • The interface of the software is quite complicated.

3. VLC

As the MKV files occupy a lot of space in the storage, it is better that you compress MKV with VLC. Many users will be amazed to learn that they can reduce the file size with the help of this software. VLC has many hidden functionalities and video compression is one of them. Once you've learned how to compress MKV files to a smaller size with VLC, it will be easy for you to compress the files without installing or downloading any additional software. VLC is not only the best media player worldwide; it also has some additional functions which are quite helpful. The software has a wide array of format support so that you can play, convert, and compress files of any format.

Reduce MKV files size free with VLC


  • It also allows the users to perform editing on the video files.
  • You can change the frame rate and bit rate of the video.


  • The software lacks advanced compressing options.

Conclusion: Now you have known multiple methods to compress MKV video size online and free. But if you want to own a compressor which can compress MKV without losing video quality and get more related features, then Wondershare UniConverter (originally Wondershare Video Converter Ultimate) is the best choice as the online and free tools have many limits on file size, compressing quality, and compressing speed.

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Kayla Morrison

Kayla Morrison

staff Editor

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