What Is PDF/A?

PDF/A is an ISO-standardized version of PDF designed specifically for long-term archiving. Unlike standard PDF, PDF/A prohibits features that could cause the document to render differently over time. This includes prohibiting external font dependencies, JavaScript, encryption, and audio-video content.

Why PDF/A Matters

Standard PDFs may look different years later because fonts become unavailable or software changes. PDF/A ensures your document looks identical decades from now by embedding all fonts, using device-independent color, and self-containing everything needed to render the document.

PDF/A Compliance Levels

PDF/A-1 is the original standard based on PDF 1.4. PDF/A-2 supports PDF 1.7 features and allows layers. PDF/A-3 permits embedding any file format. Each level has conformance grades: Level B ensures visual appearance, Level A requires accessibility features.

When to Use PDF/A

Government agencies require PDF/A for official records. Legal firms archive contracts in PDF/A format. Libraries and museums preserve documents as PDF/A. Any organization with long-term document retention requirements should consider PDF/A.

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