Export as anki, json and csv. Maybe pdf?

First of all, wonderful concept. Though I watch Netflix on my TV, this app makes me watch it on my mac, too. I love that the words can be saved into a list and it would be great to be able to export them to a pdf file (which I can print out). I do not use Anki, and neither do I know json. What is that good for? Also, what is the point of exporting the words to a .csv file? (I think learning from a pdf is better than from Excel)