[Doitsu]

Originally Posted by patrik

Until you get a better response my suggestion would be to take a look at some of the files by Doitsu. (https://www.mobileread.com/forums/asearch.php and add Doitsu in the field "Attached by".)

Thanks for the plug, however, most of my epub3 books are far from being ideal test cases.

@ibu: Check out the official IDPF epub3 sample files, the EPUB 3 Test Suite and the free Azardi epub3 sample books. (Note that some of the features in Azardi epub3 books will only work with the Azardi app.)

Also, as others will undoubtedly point out, unless you plan to implement specific epub3-only features (e.g. JavaScript, page numbers, popup footnotes etc.) and your favorite ebook app has excellent epub3 support, you might want to stick with epub2 books for the time being, because very few apps have epub3 support and even apps with epub3 support rarely support all features.

If you're still not deterred, simply create an epub2 book and convert it to an epub3 book with the Sigil epub3 output plugin.