I'm in the process of writing an extremely long and complicated fantasy story on Fictionpress. One of the things I'd like to do is create a genealogy chart for the main characters so my readers can keep track of who's related to who easily. Ideally, I'd like to find an online generator that would let me create something similar to this
(random example I grabbed from a web search). I find a lot of free templates online, but they all seem to be made to be printed out and filled in, and what I want is something that would allow me to add lines, names, etc. and make a jpg or other image file. Does anyone know of a program or website that would allow me to do this?