Compile entries from multiple text fields into a PDF and save

I have just been given an interesting challenge and just wanted to see if anyone has ever managed to do this:

I have a course where there will be multiple fields that the learner will be writing a plan based on what principles they are being taught over a series of slides. At the end we would like them to be able to compile all the notes in those various fields into a PDF and download them - is this possible?

Steve