Thread: Epub to iBooks validation failures after Calibre conversion
View Single Post
Old 10-28-2013, 02:29 AM   #2
kovidgoyal
creator of calibre
kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.
 
kovidgoyal's Avatar
 
Posts: 45,207
Karma: 27110894
Join Date: Oct 2006
Location: Mumbai, India
Device: Various
calibre is not going to generate a valid epub 2 file from an epub 3 source. The only guarantee that calibre makes is that if you feed it a valid epub 2 it will output a valid epub 2.

I dont know of any automated solution that will get you valid epub 2 from epub 3. I would suggest you contact the developers of the epub creating program and tell them to output epub 2 in the first place.
kovidgoyal is offline   Reply With Quote