You can export it as an image!
This app lets you design custom skill trees. You can use it for college course mapping, or to track your progress learning different parts of a textbook or any subskills.
If you found this useful or have any feedback, contact me or send me your skill trees. This site will not collect any data you use to make the trees or put into the trees. Everything runs on the front end.
Code available on Github. Initial VisJS code inspired from this CodePen.