PDF/A Compliance Explained: Converting and Validating Documents for Long-Term Archiving
Can your digital documents still be accurately rendered 20 or 50 years from now? Standard PDFs depend on system fonts, external ICC color profiles, and active JavaScript that can break across generations. PDF/A guarantees complete, self-contained visual fidelity.
1. What Distinguishes PDF/A from Ordinary PDFs?
PDF/A is an ISO-standardized subset of the Portable Document Format designed specifically for permanent archiving. It strictly forbids dynamic features that jeopardize long-term reproducibility, including JavaScript execution, audio/video embeds, external font references, and password encryption.
Every single font glyph used in the document must be 100% embedded, and color values must be calibrated against an explicit OutputIntent ICC profile (such as sRGB IEC61966-2.1 or standard CMYK).
2. PDF/A-1b vs PDF/A-2b: Which Format Should You Choose?
PDF/A-1b is based on PDF 1.4 and represents the classic, most widely accepted standard in legal courts and tax authorities. PDF/A-2b, introduced with ISO 19005-2, builds on PDF 1.7 and adds support for JPEG 2000 image compression and transparent vector overlays.
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Frequently Asked Questions
How do I know if my PDF is genuinely PDF/A compliant?▾
You can test your document instantly with our client-side PDF/A Validator tool. It audits the XMP metadata schema, verifies font embedding flags, and checks OutputIntent records against ISO 19005 rules.
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