PdfStandard Enumeration

Specifies the PDF standards compliance level for the generated PDF document

Definition

Namespace: HiQPdf.Next
Assembly: HiQPdf.Next (in HiQPdf.Next.dll) Version: 18.9.2
C#
public enum PdfStandard

Members

None0 Plain PDF output without an accessibility structure tree or archival metadata
PdfUa11 PDF/UA-1 (ISO 14289-1) Universal Accessibility standard. Recommended for documents that must be accessible to screen readers and other assistive technologies
PdfA2b2 PDF/A-2b (ISO 19005-2, conformance level B) basic long-term archival. Does not require a tagged PDF structure tree. Choose PdfUa1PdfA2b when both archival and accessibility are required
PdfA2a3 PDF/A-2a (ISO 19005-2, conformance level A) accessible long-term archival. Requires a tagged PDF structure tree, Unicode character mappings and natural-language metadata
PdfUa1PdfA2b4 PDF/UA-1 (ISO 14289-1) combined with PDF/A-2b (ISO 19005-2 level B). Satisfies both universal-accessibility and basic long-term archival requirements
PdfUa1PdfA2a5 PDF/UA-1 (ISO 14289-1) combined with PDF/A-2a (ISO 19005-2 level A). The highest combined PDF/UA-1 + PDF/A-2 compliance level
PdfUa26 PDF/UA-2 (ISO 14289-2) second-generation Universal Accessibility standard, based on PDF 2.0
PdfUa2PdfA2b7 PDF/UA-2 (ISO 14289-2) combined with PDF/A-2b (ISO 19005-2 level B). Second-generation accessibility combined with basic long-term archival
PdfUa2PdfA2a8 PDF/UA-2 (ISO 14289-2) combined with PDF/A-2a (ISO 19005-2 level A)
PdfA49 PDF/A-4 (ISO 19005-4) base conformance, based on PDF 2.0. Does not require a tagged structure tree. Use PdfUa2PdfA4 when both archival and accessibility are required
PdfUa2PdfA410 PDF/UA-2 (ISO 14289-2) combined with PDF/A-4 (ISO 19005-4). The recommended combination for PDF 2.0: second-generation accessibility with base long-term archival conformance
PdfA3b11 PDF/A-3b (ISO 19005-3, conformance level B) basic long-term archival with support for embedded files of arbitrary type. Commonly used for e-invoicing standards such as ZUGFeRD and Factur-X
PdfA3u12 PDF/A-3u (ISO 19005-3, conformance level U) long-term archival with guaranteed Unicode character mappings and support for embedded files of arbitrary type
PdfA3a13 PDF/A-3a (ISO 19005-3, conformance level A) accessible long-term archival with support for embedded files of arbitrary type
PdfUa1PdfA3a14 PDF/UA-1 (ISO 14289-1) combined with PDF/A-3a (ISO 19005-3 level A). Universal accessibility plus long-term archival plus support for embedded files of arbitrary type
PdfA4f15 PDF/A-4f (ISO 19005-4, Files subset) long-term archival based on PDF 2.0 with explicit support for embedded files of arbitrary type. Modern equivalent of PDF/A-3
PdfUa2PdfA4f16 PDF/UA-2 (ISO 14289-2) combined with PDF/A-4f (ISO 19005-4 Files). Recommended modern combination for accessibility, long-term archival, and support for embedded files of arbitrary type

See Also