Addon:Interactive Family Tree

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Revision as of 15:33, 18 April 2020 by PeWu (talk | contribs) (Updated addon description wording)
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Please use carefully on data that is backed up, and help make it better by reporting any comments or problems to the author, or issues to the bug tracker
Unless otherwise stated on this page, you can download this addon by following these instructions.
Please note that some Addons have prerequisites that need to be installed before they can be used.
This Addon/Plugin system is controlled by the Plugin Manager

Interactive Family Tree addon screenshot

The Interactive Family Tree addon allows you to browse the family tree using the Topola Genealogy Viewer.


Once this plugin has been installed, select Menu Tools > Analysis and Exploration -> Interactive Family Tree....

A web page will open with your family tree. You can click on people to change the focus of the tree.

Technical details

One of the features of this addon is that the Interactive Family Tree addon does not send any data out of your computer.

This is something that is not obvious because what you see in the browser is a web application. Here is a technical description of how the addon works.

On the Gramps side, the addon saves a temporary file in GEDCOM format and runs an HTTP server inside Gramps that reads the GEDCOM file.

Then, the addon opens your browser pointing to a web application hosted on GitHub pages. The web application that contains a GEDCOM parser and viewer is loaded in your browser. It is a “single page application” that once it is loaded it does not require an Internet connection to work (this is why you can open it from the browser’s cache even with WiFi turned off). After the web application is loaded it reads the GEDCOM file from the HTTP server in Gramps. The data is only loaded into the browser’s memory and does not leave your computer. It is processed by JavaScript code to produce a visualization of the data.