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Old 10-16-2017, 02:27 PM   #3
olin-shivers
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olin-shivers began at the beginning.
 
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Join Date: Oct 2014
Device: kindle
Quote:
Originally Posted by kovidgoyal View Post
Simply convert to EPUB without any cover in the input document and ebook-convert will generate a cover automatically.
Hi, Kovid. Thanks for your instantaneous reply!

What you suggest will produce an *epub* file. Which will unzip into a directory containing a file images/calibre_cover.jpg. I'm just looking for a program that will produce that calibre_cover.jpg file directly, and nothing else. Clearly that is happening at some point in the execution of ebook-convert.

Is there some way to do this? (As a workaround, I *could* use ebook-convert to do an epub->epub conversion on a trivial book, then extract images/calibre_cover.jpg from the result. But that seems like a bit of a hack.)

(I see mention of SVG format covers in the manual, but what ebook-convert makes for me is a jpg.)

Secondarily, it would be nice if there was some way to choose among the various styles (banner, cross, blocks, etc.) of cover image that ebook-convert knows how to produce, and select the color.

Olin

P.S. While I'm writing: are there any plans to have calibre support the current epub standard, 3.1? E.g., a way to have ebook-convert produce books in this format?
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