keithcurtis said: You need to save them as Jpegs. PDFs will not load to theTabletop. Also, 300dpi is probably overkill; it's hard to tell without seeing the maps. 140 pixels per square is probably good enough for most purposes. That will let you zoom in to 200% with no loss, and a bit more with no observable loss. Also "dpi" is a misnomer, since a computer screen has no way of knowing what an inch is. DPI is for print. The resolution for Roll20 is 70px per grid unit. (~88 pixels for a vertical hex height.) Count the number of hexes down use that as a guide. In other words, if your map is 20 hexes down (Battletech uses hexes, right?), save at (20X196) = 3920px tall, and don't worry about the "dpi". If you would like to read more about graphics handling on Roll20, there is an excellent page on the wiki . It does use Hexes but it doesn't have too. One problem I've having though is trying too align it to the Hex grid which it just doesn't seem to want to do. It's almost like its still somehow trying to lock on a square based grid. I've solved the problem by enlargening the map I dropped in so the roll20 hexes are smaller then the uploaded map hexes to make it clear which Hex the unit is in. Which isn't ideal as it takes some finegeling but it work. But the reason I want to use the Hex based grid is because for the Battletech RPG, we're having Mech combat and it's easier to just plop down one of the existing map sheets, put them togethere and use use those. If theres anything additiona like turrets or walls, I just plop those down ontop too.