Convert PDF to PDF/A online — free
Convert any PDF to PDF/A-1b, 2b, or 3b. ISO-19005 compliant. Free, no signup.
PDF/A is the archival subset of PDF — the ISO-19005 standard that guarantees long-term reproducibility. Used by courts, government agencies, ISO-certified document-retention systems, and academic repositories.
We support all three common levels: 1b (most restrictive, oldest systems), 2b (modern default), and 3b (allows file attachments).
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Frequently asked questions
Which level should I pick?
PDF/A-2b is the right answer 95% of the time. Use 1b only if your target system specifically requires it. Use 3b only when you need to embed source files (CSV, XML) inside the archived PDF.