@kayadelen.bsky.socialGone, as in epubcheck: a fatal error on an OPF declaring Shift_JIS, windows-1254 or Big5, which hid every other check. A UTF-16 SVG or NCX no longer comes out as "not well-formed".
Now an error, as in epubcheck: a Latin-1 chapter.
@kayadelen.bsky.socialNow valid, as in epubcheck: an img with srcset and no src, and epub:switch inside a paragraph. A query-only link no longer also reports a missing file.
Now an error, as in epubcheck: image[1].jpg as a URL, aria-hidden=" true" (stray space), epub:type on head.
@kayadelen.bsky.socialEPUB 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.
@kayadelen.bsky.socialCSS 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.