epubcheck
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w3c
The conformance checker for EPUB publications
[java] ERROR(RSC-005): results/000459/10_melanges_de_litterature.epub/OEBPS/content-table.xhtml(33,180): Error while parsing file: The a element must not appear inside a elements. I can understand how inside warrant an error (and even that is not entirely...
Consider this in the package file: ```xml ``` Epubcheck flags an error because it should be `fallback="fallbackid"`. However, the error message says: ``` ERROR(RSC-005): [...]: Error while parsing file: value...
I can’t seem to find any documentation of the usage option `-u / --usage`: - Is there a complete list of messages? - What is their level of severity (purely...
The restriction on the SVG title element has been clarified and loosened slightly so that any HTML elements can be used in it (but only HTML elements). Epubcheck's implementation of...
Right now EpubCheck depends on 9.8.0-8, maybe you could consider upgrading it to support Saxon 11.3.
I use TailwindCSS with my epub project to style the book. However, stuff that are usually legal that Tailwind produces, don't pass the epub checker's validator. I assume that the...
The on page link for message code was incorrect. Had #messages-reference and should be #message-codes l:200
Value must be a well-formed language tag. https://github.com/w3c/epub-specs/issues/1488
I don't believe epubcheck cares what media types are declared for `script` data blocks, but I've only tested on the version running in oxygen. Probably just need to confirm this...
There should be a warning now if `href` attributes in the package document have absolute URLs that use the `file` scheme. `href` is allowed on metadata `link` and manifest `item`...