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MKVToolNix

v103.0Open sourceReleased 18 Oct 2026

Add, remove or reorder tracks and subtitles in MKV files. By Moritz Bunkus

  • Windows
  • macOS
  • Linux
Official sourceNo bundles

By the ToolsBharat teamUpdated 18 Oct 2026How we check

Quick answer

MKVToolNix is open source software for Windows, macOS and Linux from Moritz Bunkus. Add, remove or reorder tracks and subtitles in MKV files. Download it only from mkvtoolnix.download. The latest version we track is 103.0 (18 Oct 2026). ToolsBharat links straight to the publisher's own download page, with no bundled offers.

Latest version:
103.0 (18 Oct 2026)
Publisher:
Moritz Bunkus
Official site:
mkvtoolnix.download
Licence:
Open source — GPL-2.0
Requirements:
Windows 10 / Windows Server 2016 or later

Our verdict

MKVToolNix is the standard tool for editing Matroska (MKV) files without re-encoding: add subtitles, drop unwanted audio languages, set default tracks or join parts. It is fast because it only remuxes. The GUI is functional rather than pretty.

Screenshots

MKVToolNix GUI multiplexer window
Official Microsoft Store listing
MKVToolNix GUI window with track properties
Official Microsoft Store listing
MKVToolNix GUI window
Official Microsoft Store listing

Key features

  • Merge video, audio and subtitle tracks into MKV
  • Change track names, languages and default flags
  • Header editor and chapter editor

Pros

  • Pro: Lossless and fast
  • Pro: SHA-256 checksums published

Cons

  • Con: Works with MKV output only
  • Con: Many options for first-time users

What's new in 103.0

See what changed in 103.0 in the official release notes

Version history

  1. Version 103.0Latest

    18 Oct 2026
    SHA-256
    The developer does not publish one
    Source
    Release notes

Official downloads by platform

For Windows, use the Download button. Other platforms go straight to the publisher's own page or official store.

Requirements

OS
Windows 10 / Windows Server 2016 or later
Architecture
64-bit, 32-bit

Licence

Type
Open source
Licence
GPL-2.0
Publisher
mkvtoolnix.download

Where these facts come from

Checked 30 Oct 2026

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Alternatives

MKVToolNix

103.0 · Not stated

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