This will take you 5 minutes and you can do it for free.
1. Go to ChatGPT and upload the paper you want to make a mind map of.
Paste the prompt below and hit Enter/Return. ChatGPT will give you a code block. Copy it.
Prompt:
Act as an expert academic and go through this document very carefully and understand it as best as you can. Based on your understanding, build a mind map in which you organize the document hierarchically into main topics and subtopics.
Once you are done, write markmap.js code for the mind map with nodes organized hierarchically. The mind map should be visually appealing, easy to follow, and should make the document digestible. Don't give me anything other than the markmap.js code.
2. Go to markmap.js[.]org/repl
You will see two columns.
Delete whatever is in the left column and paste the code you copied from ChatGPT.