Thread: "KEPUB" format on https://standardebooks.org/
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Old 05-09-2024, 08:11 AM   #20
JSWolf
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Location: Roslindale, Massachusetts
Device: Kobo Libra 2, Kobo Aura H2O, PRS-650, PRS-T1, nook STR, PW3
Quote:
Originally Posted by DNSB View Post
The cover image is flagged as such in the .opf file. I do have an procedure for generating a cover.xhtml file with cover.jpeg linked in it. I personally find their 1400x2100 resolution cover files to be larger than I would prefer especially when most of the background graphics are pixelated and blurry.



For an ePub3 ebook, the .ncx file is not necessary. It may be included for ePub2 compatibility but since kepub.epub is intended to be opened by the ePub3 compatible WebKit based renderer on a Kobo ereader, adding a .ncx file is not useful. Standard Ebooks does make it clear that they consider the results of opening any ePub with the RMSDK based renderer to generate poor results, a conclusion that I disagree with.

Personally, I do add a toc.ncx using Sigil's Generate toc/guide for epub2 tool.

Overall, most of Standard Ebooks ePub format ebooks are a much better starting point than the abominations served up by Gutenberg.
Even if they don't like RMSDK, there is no reason at all such simply formatted eBooks should not work. The reason they don't work is because SE goes out of their wait to make sure they don't work. So on a Kobo, nook, Sony, they don't work when trying to read ePub.

If I was editing their eBooks, I'd rip out the code and start over because it's that bad.
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