Catalogue Architecture

Version control system Wiki

Zim's default installation ships with a Version Control Plugin. To enable it, go to Edit -> Preferences -> Plugins and check the box next to Version Control. Zim supports Bazaar, Git, Mercurial, and Fossil as backends.

Dependencies: This plugin requires one of the supported version control systems to be installed. Currently Bazaar, Git, Mercurial and Fossil are supported, so one of these applications is required. In specific the "bzr", "git", "hg" or "fossil" command should be available in the system path.


If the option Autosave version on regular intervals is enabled zim will save (or "commit") a new version every time you close zim or when opening zim if new changes are detected.


If you want to keep track of your changes or if you want to collaborate on a Zim notebook as a team, version control is the best way to go. Zim integrates very well with existing version control software because all relevant data is stored in plain text files.

To save the current state of the Notebook, choose File -> Save Version... from the Main Menu and confirm that you want to enable Version Control. In the next window add a comment describing the changes (probably something like "yeah, first version" at this point) and confirm by clicking Save.

You can browse the complete history of saved versions by selecting File -> Versions... from the Main Menu. You can view and restore previous versions of your Notebook and view all your changes between two versions in the window that open.

The "Versions" dialog

TODO: document details all buttons

The button "Side by Side" is used to show two versions of the page side by side with an external program like meld. It only works when you select a revision for a single page. If the button remains insensitive, probably no suitable application is found.

You can configure applications to use for side by side comparison by installing a .desktop file in the zim data folder under helpers/compare_files/. The application should accept two file names as arguments.


TODO here should be documented how to share the newly created repository with your collaborators... (Depends on the backend chosen)

Technical Details

Technically speaking a local repository is created when enabling Version Control, depending on the backend you choose, this repository is managed by Bazaar, Git, Mercurial or Fossil. Every time you save a version, another revision is checked in. Zim just uses standard version control systems as backend, so you can always view and export your history using standard tools.

On startup zim tries to detect the version control system used for a specific notebook, and use it if supported. So you can manually initialize repository (e.g. by branching) and then open them with zim. No need to tell Zim that the notebook is managed explicitly.

Manual Version Control

This is for advanced users that have to use another Version Control System or have other reasons not to use the included plugin.

To manually manage revisions of your notebook, the following files should be added to your repository:

  • The "notebook.zim" file in the notebook folder
  • All your pages (*.txt files in the notebook folder and subfolders)

All files created by Zim are in plain text format and only change when you explicitly change them so you should get readable, reasonable diffs and merges in case of conflicts.

You can and should ignore the following items however:

  • The complete ".zim" folder - this is a local cache that will be regenerated
  • Anything you manually put into or below the root folder you do not want to be in your repository

The files in the ".zim" folder are caches of the index and some client configuration (window sizes, scroll position etc.) and some of it is in binary format, so you do not need or want it in your repository.

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