Board Thread:Support Requests - Getting Technical/@comment-30509676-20170821045734/@comment-3513410-20170821082032

The answer probably depends on what kind of family tree you are trying to create for your wiki.

If you just want a static (seldom or never updated) tree, creating a diagram in PNG or (preferably) SVG format should do the trick. (Not JPG, as that format is optimised for photographs, not line drawings.) The best SVG editor is probably Inkscape, which is a free download, and it has useful features such as connecting lines (move one of the boxes so connected, and the line automatically moves with it) and resize the page to fit the drawing (no ugly borders).

If you want a dynamic (updatable on-page) tree, you will need some kind of software. I don't know if this kind of thing is even possible in MediaWiki.