Reply To: ePub Export Warnings

I’m not sure what Adobe uses for those warnings, it seems there’s always a pop up with something no matter how cleanly I format my books, and, well, I do a lot of cleanup on the back end so my exported file is never the final product. Sorry I guess I’m not much help when it comes to the ID export warnings.

If you are going for clean and valid ePub files to upload to vendors I would download either epubcheck (command line) or Epub Checker (GUI frontend for epubcheck, drag and drop format). epubcheck is the gold standard validation tool to make sure your files are valid to the epub specifications before you send it out.

epubcheck: https://github.com/w3c/epubcheck/releases

Epub Checker: https://www.pagina.gmbh/produkte/epub-checker/