MKV Compressor

How to Compress MKV Files Online

1. Upload Your MKV Files: Click "+ Add Files" to select MKV files from your computer, Google Drive, or Dropbox. Batch upload supported.
2. Choose Compression Settings: Set a target file size percentage (e.g., 50% of original), specific size in MB, or adjust quality level. Optionally reduce resolution (1080p → 720p) for further savings.
3. Download Compressed Files: Click "Compress" and download your smaller MKV files.

Why Compress MKV Files?

Movie and TV Collections

MKV is the standard format for high-quality movies and TV shows — but files can be 2-10GB each. Compressing to 50-70% of original size saves terabytes across a large collection while maintaining good viewing quality.

Anime Libraries

Anime fans often collect MKV files in 1080p or 4K. Compressing reduces storage needs while maintaining the visual quality that matters for animation's clean lines and vibrant colors.

Plex and Media Server Storage

Reduce the storage footprint of your Plex, Jellyfin, or Emby media library. Compressed MKV files stream just as smoothly with less disk space.

Sharing and Transfer

Large MKV files are impractical for cloud sharing or file transfer. Compressing makes them manageable.

Frequently Asked Questions

How much can I reduce an MKV file?

Typically 30-60% reduction depending on content and quality settings. Action-heavy content compresses less than dialogue scenes or animation.

Does compressing reduce quality?

Yes — lowering quality settings removes video data. At moderate settings (60-70% quality), the difference is minimal on normal screens.

Can I compress multiple MKV files at once?

Yes. Upload multiple files and compress them all with the same settings.

Is it free?

Yes. Completely free with no watermarks, no sign-up required, and no file count limits.

Does it work on mobile?

Yes. Works in any modern browser on all devices — no app installation required.