It’s almost hard to remember, but when it came out, iBooks could read only EPUB files, not PDFs, and the only way to load them was by syncing with iTunes. Over a number of releases of both iBooks and ...

Amazon Kindle flaunts a massive library of ebooks from Amazon's ecosystem, but some of the ebooks that we have are in outside file formats, such as PDF and EPUB. A kindle e-book reader is pictured at ...

The Kindle Fire and second-generation Kindle Reader include native support for PDF files, but to view these files on a first-generation Kindle Reader, you must convert them to MOBI or AZW format.