Hi. Glad you like the tool!
Thanks for the suggestion, but I'm not actively developing the tool further (though it's open source if anyone want to give it a go themselves).
Since you're sharing your puzzle: You can choose Menu > Open Puzzle Folder and see the text files for your puzzles. If you post the text content somewhere, other people will be able to save it as text files and open it locally in their own PuzzleGraph application. :)