More about PDF Topics

PDF/A - more about the longterm archiving standard

Validation Report: The Bavaria report tests the validation quality of PDF/A validating software.

XMP - more about metadata in PDF

XMP Panels: How to display and edit XMP metadata.

XMP in PDF/A: Describes how XMP has to be used in PDF/A documents.

XMP Validation: Ways to ensure that XMP conforms to the XMP specification,

Free XMP Validator:  XMP validator for PDF/A-1 (powered by PDFlib)