Why and how to convert DRM-free EPUBs to Kobo’s KEPUB format

I’ve got two Kobo e-readers now, the Clara and Forma, that Kobo sent me to try out and review. I am very happy with both of them. They’re great readers for reading anything in EPUB format. But, as I’ve noted before, they also support Kobo’s own extended version of the EPUB format, called KEPUB—used for the books Kobo sells from the store, or for DRM-free EPUBs that readers convert and sideload themselves. In this post, I’ll go over the differences between the formats from a reader’s point of view, and discuss the easiest way I’ve found to do bulk conversions from DRM-free EPUB to KEPUB.

KEPUB vs EPUB

There are three major differences I’ve noticed between KEPUB and EPUB ebooks.

First, KEPUB books support Kobo’s “fast flip” function. On Kobo readers such as the Clara or Forma, you can hold your finger down on the lower right or lower left…

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