How to convert a pdf to pdf/a-1b for long-term archiving
- Step 1Upload the PDF — Drop the document into the PDF to PDF/A converter.
- Step 2Select PDF/A-1b — Choose PDF/A-1b as the target conformance level.
- Step 3Convert and download — Save the ISO-compliant archive PDF.
- Step 4Validate the output — Run the PDF through a PDF/A validator (e.g., veraPDF) to confirm compliance.
Frequently asked questions
What is the difference between PDF/A-1a and PDF/A-1b?+
PDF/A-1b requires visual appearance to be preserved. PDF/A-1a additionally requires tagged PDF structure for accessibility. For most archival use cases, 1b is sufficient.
Can an encrypted PDF be converted to PDF/A?+
No — PDF/A does not permit encryption. Remove the password first using the PDF Remove Password tool, then convert.
Is PDF/A-1b required for legal document submission in the UK?+
Requirements vary by court and jurisdiction. Many UK courts and HMRC accept PDF/A. Check the specific submission guidance for your jurisdiction.
Privacy first
All PDF processing runs locally in your browser using PDF-lib and pdf.js. No file is ever uploaded — only metadata counters are saved for signed-in dashboard stats.