EPUB 2: an attribute on the wrong SVG element, a keyword SVG 1.1 does not allow, or a font without its font-face is now an error, as in epubcheck. EPUB 3 gets the same checks as notes. None of the 544 books on my shelf changed.

#ebookproduction #Sigil #calibre #XML

CSS errors now say what is wrong. Where it used to print "CSS syntax error", it now prints e.g. "invalid selector '. h-10, . y-10' at '.'" or "'{' is never closed", with line and column. A reader asked for it on Reddit.

#CSS #ebookproduction #Sigil #calibre #WebDev