Struggling to decide what format to put my fangan in?

I have been deciding most of the features of my fangan, I'm just not sure where on the internet i want to put it. I want it to have some pictures, maybe some links to the character bios when they introduce themselves and such, im just not sure where to put it. I dont think i have the money to make a video fangan, nor the skills to make a game. So i know i'm not interested in those mediums... i was considering AO3 but im not very familiar with its interface so i wasnt sure if i could add pictures to my writing or links to the characters bios. What are some formats i could use to post my fangan?