I love this. Absolutely fantastic, especially with all of the keyboard controls. I've not been able to get the PNG import tool to work at all, but everything else seems really solid.
Thanks! PNG import is mainly intended for pulling PETSCII content into Petmate from running .prg files in VICE. The pixel data and image dimensions need to match exactly for the import to succeed. I try to explain it in the docs but the feature just kinda doesn’t do what most people expect it to.