Chop up a map into even pieces?
Hey folks, I've started up a Patreon where I will be putting up stuff for people to download free. Not advertising here, just wondered if some of the folks here could help with an export problem.
The map below is the one I'm offering, and optimized in terms of export for Roll20, the only VTT I have any real experience with. I'd also like to add an option for people to download printable sections of it for use as battlemaps. The ideal size for letter-sized or A4 printing, from what I understand, is 100 X 80, and this map is 300 X 240, which means I'd need nine evenly-sized exports.
Is there a way to do this? I found an old Youtube video by Joe Sweeney which recommends using grid squares to do it, but that only works if you want square exports.
As a secondary question: I've stayed away from the highly artistic style used by a lot of mapmakers because I wanted a practical map that is easy for GMs to use, although the more artistic style is certainly beautiful. Does anyone have any opinions on this? Would the GMs among you prefer a cleaner style like this, or the prettier styles that seem to dominate the net?