Portable Document Format

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Main Page > Documentation > Format policies > Portable Document Format


File extension(s)[edit]

.pdf

Format registry information[edit]

Significant characteristics[edit]

See Significant characteristics of word processing files

Preservation action plan[edit]

Normalize to PDF/A

Preservation issues[edit]

PDF/A is the only version of PDF recommended for long-term preservation. According to Library of Congress, "For pragmatic reasons, when PDF/A is mandated, PDF/A-1b is usually acceptable. Full PDF/A-1a compliance, with tagged document structure, is hard to achieve except in a workflow that anticipates that objective from initial document creation." (Library of Congress Sustainability of Digital Formats: PDF/A)

Conversion test results[edit]

PDF to PDF/A using Ghostscript

Access format[edit]

PDF/A

More information[edit]