... for considering to contribute directly! By building, using, posting, and talking about Hangprinter, you're already doing what the Hangprinter Project is all about.
The maintainers are super grateful if you make a merge request, and submit it to the repo. See for example here for help with doing that.
Lead developer tobben has a Gihub Sponsors campaign 💖. This is the most effective way to donate since it has no transaction fees, and Github will match the donation amount.
Monthly donations can also be set up via the Bountysource Salt Campaign.
All kinds of donations via Brave Browser are enabled. If you get Brave Browser via this link, then tobben will receive a small kickback.
Bitcoin donations are accepted on: 1BwobkC5Tb7psWkzCugtcH21ufj6Lc9mgY