It would be great to have a few screenshots on the readme.md or Doc pages to understand quickly what we‘re talking about.

https://www.pysimplegui.com/

Should be in the README.md

They kinda assume everyone knows it. Maybe the same thought process led to commercialization…

There is a Link in the About Section AND a Link in the readme.md

Maybe it's just because I'm more of a SwiftUI person, but in the example on the homepage, the event == 'Cancel' condition seems like a strange and fragile way to check if a certain button was pressed...