So my wife is into quilting, and she frequently finds pdf quilt patterns on the Internet that she downloads into iBooks and categorizes into Collections. My understanding is that even encrypted iTunes backups do not include pdfs in iBooks from 3rd parties. She is looking to get a new iPad in the fall, so somehow those pdfs need to be transferred... Currently my only option is to either email each pdf to myself from iBooks, or use a tool such as iExplorer to save each pdf to my Macbook. Her specific requrement is that she can see a preview of each pdf while browsing them, as the file names don't help her much. Is there an app such as Goodreader that can read pdfs from iBooks and shows pdf previews? Can I then save those pdfs in the app to the cloud somehow? She has 100+ pdf files downloaded... Thanks.