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PDF/A Converter

Convert any PDF to PDF/A archival format — required for legal filings, government submissions, and long-term document preservation. Files deleted within 60 minutes.

UPDF — AI-Powered PDF Editor

Convert PDF to PDF/A

Choose your PDF/A conformance level, upload your file, and download an archival-compliant PDF. PDF/A-2b is recommended for most use cases.

Server-Side Tool — Your file is uploaded, converted, and automatically deleted within 60 minutes. Prefer local conversion? Adobe Acrobat Pro converts to PDF/A locally.
Drop your PDF here
or click to browse — max 50MB
PDF Max 50MB
Selected File
PDF
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PDF/A Conformance Level
Converting to PDF/A…
Embedding fonts and applying archival compliance
Conversion complete!
Your PDF/A file is ready.

What is PDF/A?

PDF/A is an ISO-standardised version of PDF designed specifically for long-term archiving and preservation. Unlike regular PDFs, PDF/A files are self-contained — all fonts are embedded, colour profiles are included, and external content references are forbidden. This ensures the document can be rendered identically decades from now, regardless of what software is available.

PDF/A is required for many legal, government, and regulatory submissions. Courts, tax authorities, and government agencies increasingly mandate PDF/A for electronic filings because it guarantees document integrity over time.

PDF/A-2b is the most widely accepted level and the recommended choice for most users. It supports modern PDF features including transparency and JPEG2000 image compression, while remaining fully archival-compliant.

Frequently Asked Questions

Which PDF/A level should I choose?
PDF/A-2b is recommended for most uses — it’s the most widely supported level and handles modern PDF features. Use PDF/A-1b only if specifically required by a government authority or legal system that mandates the older standard. PDF/A-3b is useful if you need to embed files (like XML data) within the PDF.
Will my PDF look different after conversion?
Usually no. The visible content remains the same. However, PDF/A requires all fonts to be embedded and some colour spaces to be specified, which can occasionally cause minor visual differences in documents that used non-standard colour profiles or had font subsetting issues.
Is my file secure?
Yes. Files are transferred over HTTPS and automatically deleted within 60 minutes. They are never stored permanently or shared with third parties.
Can I verify that the converted file is PDF/A compliant?
Yes. Free PDF/A validators include veraPDF (verapdf.org) which is the industry-standard open-source validator. Adobe Acrobat Reader also shows a compliance bar at the top when opening a PDF/A file.