PDF/A Archival Specifications: Archiving Long-Term Documents

Digital preservation faces the threat of technological obsolescence. If a document references an external font, and that font is missing on a computer 20 years from now, the layout will break. PDF/A solves this by guaranteeing long-term rendering consistency.

To achieve PDF/A compliance, documents must adhere to several strict validation rules. First, all fonts used in the document must be embedded as subset characters. Second, device-independent color spaces must be defined. Third, external references (such as hyperlinks to external pages) are disallowed.

Additionally, PDF/A files prohibit executable scripts, interactive form fields, and audio/video files. When you compress files or merge PDFs on LovethePDF, the original PDF/A metadata compliance is carefully analyzed to ensure files remain valid and ready for institutional database storage.