As any EPUB creator knows, the minefield of retailer support and requirements is a harrowing one. Kindle expects images of one size, iBooks another, and Nook yet another still. To add to that confusion is the fact that many of these retailers either don’t explicitly spell these issues out for you, or have documentation that is obviously out of date (looking at you, B&N).
Kobo, up until this week, was guilty of being pretty quiet about their requirements. But in one fell swoop they have moved from being one of the most opaque retailers to one of the most transparent. The Kobo development team has created a great document and posted it to Github. This documentation includes not just requirements, but also support guides for many of their devices, and recommendations to generate files that work across all of their devices.
A couple of highlights:
Hats off to the development team at Kobo for taking a huge leap forward in making EPUB file creation that much easier for us. Hopefully other device makers and retailers will take their lead and do the same.