Q&A: Using Dropbox to Move E-Books Between Computer and iPad Is it possible to copy e-book downloads from my computer over to my iPad with Dropbox? I keep getting a message that the Dropbox app on the iPad can't open ePub files when I try to read them. It is possible to use Dropbox as a transfer point for files between your computer and your iPad. To make it work, you just need to open the ePub files in an app that can open them, like iBooks or another e-book reader app. Once you have copied the ePub files into the Dropbox folder on your computer and they sync up with the Dropbox app on your iPad, tap an ePub file to open it. When the Dropbox app displays the "Unable to View File" message, tap the Action menu icon in the upper right corner of the iPad's screen. In the "Open in" menu that appears, you should see a list of apps on the iPad that can open the ePub file. Pick the app you would like to use for storing and reading the e-book on the tablet. There are online stores for e-books, of course, but you can also find free e-books on sites around the Web, including Project Gutenberg, The Internet Archive and Google Books. Some e-book sites, like the mobile version of Project Gutenberg's site, let you download books directly from the iPad's Safari Web browser and open them in the e-book app of your choice.