Version: (using KDE 4.2.2) OS: Linux Installed from: Ubuntu Packages The epub format is quite widely used by e-book readers. It would be useful if okular could display this format (so one wouldn't have to open a different program such as fbreader to view these files on a PC).
Okular has already epub backend since KDE 4.1, just that kubuntu does not provide it. https://bugs.launchpad.net/ubuntu/+source/ebook-tools/+bug/345672