Image Size and Memory Usage

It's really all kind of a wash. Very large graphics can be just as taxing as dozens and dozens of little ones. Load time is pretty much dependent on the player with the least powerful computer/slowest connection. So it's going to vary wildly. Best tips I can provide for maximizing the group's experience: Keep your image resolution low - 72-100 dpi/ppi is a good target area to handle zooming in without getting mushy looking graphics Treat a Roll20 campaign more like a module rather than a multi-month long running campaign. For those epic year long adventure paths, split it up into multiple Roll20 campaigns Archive pages and characters when they're not needed Use inline rolls to minimize chat log bloat Delete your chat log if it starts getting too long As a followup from one of the earlier points, use the the copy/extend campaign feature. Utilize the transmogrifier too.

You'd be right about that Phnord. The reroll handles processing images a lot more efficiently. My tips are really just a bunch of suggested habits that should help maximize running a tight ship of a campaign, not so much a MUST DO list to run a campaign.