PDF/A Standard Explained: What It Is and When to Use It
PDF/A is the ISO standard for archival PDFs. This guide explains the difference between PDF/A-1, PDF/A-2, and PDF/A-3 and how to validate your files.
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Tags: pdf, developer-tools, business, archiving
PDF/A Standard Explained: PDF/A-1, 2, 3, and 4 Differences PDF/A is the ISO standard for PDF archiving, but "PDF/A" is not a single thing — it's a family of four standards, each with multiple conformance levels. Choosing the wrong variant can mean a document that passes PDF/A validation but isn't accepted by the court or archive you're filing with. The PDF/A Family All PDF/A standards share a common goal: ensure the PDF can be rendered accurately without external dependencies at any future point. They differ in which PDF features are allowed and which are prohibited. PDF/A-1 (ISO 19005-1:2005) Based on PDF 1.4. The strictest and oldest standard. PDF/A-1b (Basic) "b" stands for basic visual reproduction — guarantees the document renders visually identically to the original. Required: All…
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