Part 3: Use of ISO 32000-1 with support for embedded files PDF 1.4 ( Adobe Systems, PDF Reference, third edition) Standards ISO 19005 – Document management – Electronic document file format for long-term preservation (PDF/A) The ISO requirements for PDF/A file viewers include color management guidelines, support for embedded fonts, and a user interface for reading embedded annotations.
PDF/A differs from PDF by prohibiting features unsuitable for long-term archiving, such as font linking (as opposed to font embedding) and encryption. PDF/A is an ISO-standardized version of the Portable Document Format (PDF) specialized for use in the archiving and long-term preservation of electronic documents.
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