Free online MM to TXT converter

What the MM format is

In the mind-map and flowchart context, .mm is the XML-based FreeMind mind-map format. FreeMind and Freeplane create MM files containing a tree of nodes, including labels, parent-child relationships, notes, hyperlinks, icons, colors, folding state, and other map metadata.

MM files are common when a map is exchanged between FreeMind-compatible applications or stored as an editable project. Although the file is XML and can be opened in a code editor, its markup is intended for mind-map software rather than direct reading.

What the TXT format is

.txt is an unformatted character file. It is suitable for basic editors, command-line tools, document indexing, version-control systems, email, and applications that accept plain text.

A TXT export normally represents the map as indented lines, for example:

Project
  Research
    Sources
  Draft
    Introduction

Plain text is smaller and more portable than an MM project, but it cannot retain branches as a graphical canvas, node colors, icons, images, drawing positions, folded-state information, or most rich formatting.

How to actually convert MM to TXT

Using the built-in online converter

You can convert the file on 101convert.com for free without installing software:

1. Open the MM-to-TXT converter on 101convert.com.
2. Upload the .mm file.
3. Select TXT as the output format if the format selector is shown.
4. Start the conversion and download the resulting .txt file.
5. Open the result in a text editor and check that indentation and non-ASCII characters are displayed correctly.

Using Freeplane

Freeplane is a suitable desktop option because it natively reads FreeMind MM files and can export the node tree as plain text:

1. Open Freeplane and choose File → Open, then select the .mm file.
2. Review the map and expand any branches whose contents must appear in the export.
3. Choose File → Export → As plain text or the equivalent plain-text export command in your Freeplane version.
4. Choose an output filename ending in .txt, select UTF-8 when an encoding option is available, and save.

Menu names vary between Freeplane releases. If the export command is unavailable, use the application's copy or node-list export function and paste the hierarchy into a UTF-8 text file.

Using FreeMind

Open the file in FreeMind and check File → Export. Some releases provide a text or structured-text export; if plain TXT is not listed, export the visible node structure to an available text-compatible format, then open it in a text editor and save it as .txt. Renaming an MM file to TXT without exporting does not convert it: the result remains XML markup.

Quality, compatibility, and limitations

• Hierarchy is the main preserved data. A good exporter converts parent-child levels into indentation or another line-based structure.
• Node notes, hyperlinks, icons, images, colors, font settings, summaries, and graphical connectors may be omitted or reduced to labels. Check the output if those fields matter.
• Use UTF-8 to preserve accented characters, non-Latin scripts, and symbols. A legacy ANSI encoding can replace unsupported characters with question marks.
• Collapsed branches may be excluded by exporters that process only visible nodes. Expand all required branches before exporting, or select an option such as exporting the complete map.
• TXT has no standard syntax for mind maps. One program may use spaces, tabs, bullets, or outline numbering, so a TXT file exported by one application may require cleanup before another application can parse it.