PdfAConformance property

Read-only PDF/A conformance level of the currently open document, without needing to call ValidatePdfA explicitly.

PdfAConformance is the lighter-weight counterpart to ValidatePdfA: it returns the detected conformance level directly without materialising the full issue list. The property is implemented as a thin wrapper that calls ValidatePdfA and returns the Conformance field, so the result is always the same value the validator would report.

Possible values, in increasing order of strictness:

• pacNone — the document carries no PDF/A markers.
• pac1b — PDF/A-1, conformance B (visual reliability).
• pac1a — PDF/A-1, conformance A (PDF/A-1b plus full logical structure / Unicode mapping).
• pac2b — PDF/A-2, conformance B (visual reliability, ISO 32000-1 features).
• pac3b — PDF/A-3, conformance B (PDF/A-2b plus arbitrary embedded files).
• pacUnknown — PDF/A marker is present but the conformance level is missing or unrecognized.

Use PdfAConformance for routing decisions ("does this document need re-archiving as PDF/A?") and for surfacing a single status string in the UI. When the caller also needs to enumerate the specific issues that broke conformance, use ValidatePdfA instead so the parse runs only once.

• Returns pacNone when Active is False.
• The property re-runs ValidatePdfA on every read — cache the value if you query it more than once per file.
• Conformance detection is structural: XMP pdfaid markers, OutputIntent presence with embedded ICC, encryption status, trailer /ID presence, xmp:CreateDate / xmp:ModifyDate presence, and the pdfaid extension schema description. Content-level violations such as transparency, unembedded fonts, or deprecated color spaces are not detected here.

ValidatePdfA, SaveAsPdfA, SaveAsPdfAToStream