Understanding PDF/A for Archiving

Why courts, governments, and libraries demand PDF/A rather than standard PDFs.

The Archival Standard

PDF/A (ISO 19005) is an ISO-standardized version of PDF specialized for use in the archiving and long-term preservation of electronic documents. It prohibits features ill-suited to long-term archiving, such as font linking (as opposed to font embedding) and encryption.

By forcing all assets (fonts, color profiles) to be embedded, a PDF/A file created today is mathematically guaranteed to look exactly the same in 100 years, regardless of which fonts are installed on the viewing operating system.

Common Mistakes

Assuming any PDF can be easily converted to PDF/A. If the original fonts are lost or heavily licensed, conversion may fail or substitute fonts.
Using PDF/A when interactive elements (like forms or JavaScript) are required.

Next Steps

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