Many people want to know how to compress MKV files without losing quality yet I have to tell you that if you compress a video, it will more or less affect the video quality. But a good MKV compressor can manage to minimize the damage and make a perfect balance between video file size and quality. WonderFox HD Video Converter Factory Pro is such a highly recommended software, which offers easy and effective tools for you to compress any videos. Its advanced Compression Setting enables you to reduce MKV file size in the most straightforward way. Besides, the software allows you to change video encoder, change resolution and bit rate, as well as cut unwanted portions to reduce video file size. The following part tells you how to compress MKV files and keep good quality in different ways.