Why not including also epub-check validation?
Quote:
Originally Posted by kovidgoyal
Check Book is designed to warn you of problems that might actually affect the working of your book on real world devices, unlike epubcheck and flight crew, which mostly perform useless schema validation.
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I'm not an expert, but I think that some of these errors could affect...
element "p" not allowed here
Code:
<p>text</p><img alt="img" src="img01.png" />
or
<i><p>text</p></i>
or
<p><div>text</div></p>
element "img"/"i"/"div" not allowed here
Code:
<p><font size="2">text</font></p>
or
.font{size:2}
element "font" not allowed anywhere
Code:
<navMap><navPoint id="num_1" playOrder="2">
- assertion failed: the first playOrder value is not 1
- assertion failed: playOrder sequence has gaps
Code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
Irregular DOCTYPE
Code:
<package xmlns="http://www.idpf.org/2007/opf" unique-identifier="uuid-id" version="1.0">
Version not supported
Code:
<img src="img01.png" />
element "img" missing required attribute "alt"
Quote:
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metadata without language or title
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element "metadata" incomplete; missing required element
Code:
ncx:
<meta content="b" name="dtb:uid"/>
opf:
<dc:identifier opf:scheme="uuid" id="uuid_id">a</dc:identifier>
meta@dtb:uid content 'b' should conform to unique-identifier in content.opf: 'a'
Code:
<navPoint id="num_1" playOrder="1">
...
<navPoint id="num_2" playOrder="1">
identical playOrder values for navPoint/navTarget/pageTarget that do not refer to same target
Code:
preserveAspectRatio="yes"
value of attribute "preserveAspectRatio" is invalid