Quote:
Originally Posted by DNSB
For the most part, if the ebook claims to be a version 3.0 ebook, that makes it an epub3. The ACCESS Netfront renderer used by .kepub.epub is epub3 (mostly) compliant but the RMSDK version used for .epub is not.
If the book is DRM free, you can download the kepub using the desktop app and locate the ebook on your computer. What I do then is to copy it to a temporary location and add a .epub to the file name. You can then try adding it to Calibre or opening it in Sigil or with an epub reader application. So far the only kepub I've done that to that generated an incredible mass of error message from Sigil was a cookbook. No mention on the webpage that it was a fixed layout ebook.
You could try downloading a couple of previews since I haven't noticed them being DRMed just to play with. The ModifyEpub plugin for Calibre will clean up a lot of excess spans and other oddments Kobo adds to a .kepub to save some effort with Sigil or Calibre's editor.
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If you use calibre, this might be an easier option:
http://the-digital-reader.com/2014/0...es-wont-allow/
It doesn't work for me, but I've heard it does work.