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PDF/A was originally a new joint activity between the Association for Suppliers of Printing, Publishing and Converting Technologies ( NPES) and the Association for Information and Image Management AIIM in conjunction with Adobe to develop an international standard defining the use of the Portable Document Format (PDF) for archiving documents. However, the suitability of a PDF file for archival preservation depends on options chosen when the PDF is created: most notably, whether to embed the necessary fonts for rendering the document whether to use encryption and whether to preserve additional information from the original document beyond what is needed to print it. PDF is a standard for encoding documents in an "as printed" form that is portable between systems. Part 3: Use of ISO 32000-1 with support for embedded files PDF 1.4 ( Adobe Systems, PDF Reference, third edition)
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Standards ISO 19005 – Document management – Electronic document file format for long-term preservation (PDF/A)
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