Some ePubs not passing Google validation

ptgb · 01-10-2016, 12:04 PM

Hello -

I am using Calibre 2.48 on Mac OS X Yosemite and have run into an issue with converting some AZW to ePub. Most convert fine and I'm able to upload to Google books. Some, however, won't process in Google, and using the EPUB validator, I see several errors. Calibre does not report any errors converting these files. I am attaching a text output of the EPUB validator. Any ideas?

Thank you

eschwartz · 01-10-2016, 04:18 PM

Two main problems:
1) "Error while parsing file 'value of attribute "id" is invalid; must be an XML name without colons"
Somewhere in the referenced files (it gives you the line number) are invalid XML names -- the error message doesn't actually tell you what though...

2) "Referenced resource could not be found in the EPUB."
You are trying to use files that don't exist???

Have you checked those books using calibre's Editor tool "Check book"?
Alternatively using Sigil's Flightcrew plugin.

Either will do a better job than Epubcheck at reporting the source of a problem.

calibre conversions are not guaranteed to be Epubcheck-compliant, although they are supposed to work in real-world conditions.

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01-10-2016, 04:18 PM	#2
eschwartz Ex-Helpdesk Junkie Posts: 19,422 Karma: 85397180 Join Date: Nov 2012 Location: The Beaten Path, USA, Roundworld, This Side of Infinity Device: Kindle Touch fw5.3.7 (Wifi only)	Two main problems: 1) "Error while parsing file 'value of attribute "id" is invalid; must be an XML name without colons" Somewhere in the referenced files (it gives you the line number) are invalid XML names -- the error message doesn't actually tell you what though... 2) "Referenced resource could not be found in the EPUB." You are trying to use files that don't exist??? Have you checked those books using calibre's Editor tool "Check book"? Alternatively using Sigil's Flightcrew plugin. Either will do a better job than Epubcheck at reporting the source of a problem. calibre conversions are not guaranteed to be Epubcheck-compliant, although they are supposed to work in real-world conditions.

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