Accessibility Forever: The Library of Congress prefers PDF/UA to PDF/A alone

PDF/A («archival» PDF) is compatible with PDF/UA, the ISO standard for accessible PDF. The US Library of Congress’s sustainability guidance now states a preference for PDF/UA conformance over PDF/A alone: «[...] files that conform to PDF/UA in addition to PDF/A are considered a preferred format for page-oriented content by the Library of Congress. [...]»

Country of Origin: USA

Source: U.S. Library of Congress

About PDF Association

Founded in 2006 as the PDF/A Competence Center, the PDF Association exists to promote the adoption and implementation of International Standards for PDF technology.