PDF/A

GroupDocs.Total Product Family
1

Hi Team,

I am using GroupDocs.Metadata in .NET to check whether a PDF is in PDF/A format.

Currently, I am reading XMP metadata using PdfRootPackage and checking for “pdfaid” (pdfaid:part and pdfaid:conformance). However, this approach is not working correctly in all cases — some PDF/A files are not detected.

Could you please confirm:

  1. Is there any reliable way in GroupDocs to identify PDF/A documents?
  2. Or is checking XMP metadata the only supported method?