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 ...

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 ...