
: Re: Can EPUB 3.0 be viewed on EPUB 2 devices This prior question is about the differences between EPUB 2 and EPUB 3. What is more interesting to me, as an owner of three different EPUB 2 devices,
I just wanted to add that Nook is able to display epub3 files (without supporting a lot of its features) and Kindle Previewer (the tool that converts epub to kindle format) will accept epub3 files for conversion. Again, the latest Kindle devices don't support a lot of optional epub3 features, but it can still display it. Same for ibooks.
Smashwords is iffier (although I haven't checked recently). A year ago I noticed that they were using an outdated version of epubcheck which flagged as errors any epub3 file. I noticed this first in 2012, noticed that it still had not been fixed by Smashwords as of Oct 2013, so it may have been fixed by now. [2017 Update: Smashwords has fixed this].
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