chickadee » pdfa » check-pdfa-conformance

Checks PDFA-DOC against the PDF/A-1b rules a document built with pdf can break, and returns the list of violations found, or '() if it conforms. It checks the output intent, every font, every ExtGState resource, and every page's content stream. It does not change the document, so it can be called at any time, for example to report problems without raising an error.

write-pdfa-document calls it automatically in conformance mode.