PdfUaConformance property

此 API 条目保留标识符、签名、代码块和 PDF 术语的原始形式。

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

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

Possible values:

• pucNone — the document carries no PDF/UA markers.
• puc1 — PDF/UA-1 (ISO 14289-1:2014) identifier pdfuaid:part = 1 was found in the XMP metadata stream.
• pucUnknown — an XMP pdfuaid marker is present but the part number is missing or not recognised, or the document is inactive.

Use PdfUaConformance for routing decisions ("does this document need to go through the PDF/UA tagging pipeline?") and for surfacing a single status string in the UI. When the caller also needs to enumerate the specific issues that broke conformance, use ValidatePdfUa instead so the parse runs only once.

• Returns pucUnknown when Active is False.
• The property re-runs ValidatePdfUa on every read — cache the value if you query it more than once per file.
• Conformance detection is structural (XMP marker presence). It does not catch content-level violations such as missing Figure Alt text, unembedded fonts, or untagged real content. Pair with PAC 2024 or axesPDF for a full PDF/UA validator.

ValidatePdfUa, SaveAsPdfUa, SaveAsPdfUaToStream, IsTagged, PdfAConformance