When exporting documents to EPUB format, it’s important to check them for errors — especially if you edited it after exporting. One tool that helps is EpubCheck, which can detect many types of errors in EPUB. OCF container structure, OPF and OPS mark-up, and internal reference consistency are also checked.
Jay Nelson is the editorial director of PlanetQuark.com, and the editor and publisher of Design Tools Monthly. He’s also the author of the QuarkXPress 8 and QuarkXPress 7 training titles at Lynda.com, as well as the training videos Quark includes in the box with QuarkXPress 7 . In addition, Jay writes regularly for Macworld and Photoshop User magazines and speaks at industry events.