I’ve always used “Open in iBooks” to view PDF files I come across on the internet. I don’t do anything explicit to save these files, but it seems something does because when I open iBooks, those PDFs are all there. I have hundreds of these PDFs, but iBooks doesn’t seem to support folders to organize the files. The first problem is that I can’t seem to get an app like PDF Pro to see the PDFs that I viewed in iBooks.
Does iOS save these PDF files, and where are they save?
Using Collections is inadequate for my needs. Does iBooks support nested folders? How would one create the folder structure, and populate it with the PDFs?