To go with the new UI on the main page (still in test!) I've spun up a new "Poster Maker" page that aims to be user-friendly. It handles sector, subsector and jumpmap images, and offers a "quick preview" mode. It also defaults to PDF since that's the best format to print if you don't know what you're doing.
Try it out, send me feedback!
(The "options" box rather obviously needs to be replaced with a slew of checkboxes for the individual knobs. I'll get to that when I can.) - done!