How to open a .MM file online
Three steps, a few seconds.
Open your .MM file
Drop it on the box or click to choose it. It opens.
Explore it
Drag to pan, scroll to zoom and click any topic with a + to unfold its branch. The outline on the right shows the same tree as text.
Export or share
Save the map as a PNG image, or export the topics as OPML or Markdown to continue in another app.
What is a .MM file?
Ideas as a tree - saved in a handful of formats.
A .mm file is a FreeMind mind map, a tree of ideas saved as plain XML. Open it with Freeplane (free, all platforms), the actively maintained successor to FreeMind. You can also open it in any text editor since the file is uncompressed XML. Note: Xcode uses .mm for Objective-C++ source files, which is an entirely different file type.
Programs that open .MM files
| Full name | FreeMind Mind Map |
|---|---|
| Developer | FreeMind project (Joerg Mueller et al.; open-source, SourceForge) |
| First released | 2000 (FreeMind 0.1; Java-based mind-mapping app) |
| Category | Data & Other |
| MIME type | application/x-freemind |
Related viewers
Other free tools to open and preview your files.
Frequently asked questions
Is my .MM file uploaded?
No. Your .MM file is read and drawn for you.
Can I edit the map?
This is a viewer: you can fold and unfold branches, search and export, but not change topics. Export to OPML and import it into your favourite mind-mapping app to keep working.
Why does my XMind file show a warning topic?
New XMind versions also write an old-style content.xml that only says “created with a newer XMind”. The viewer reads the modern content.json first, so you should see the real map - if not, the file may be damaged.
Does it show notes and links?
Yes. Topics with a note get a small note icon; hover or open the outline to read it. Links are clickable in the outline.
What about MindManager .mmap files?
Topic text and structure are shown (beta). Images, attachments, styles and relationships aren't displayed yet.
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