What is PDF to PDF/A?
PDF to PDF/A is a free browser-based PDF tool powered by PDF-lib. Your documents are processed entirely in your browser and never sent to any server. Works with any standard PDF file. No Adobe Acrobat or software installation needed.
This tool lets you convert pdf to archival pdf/a format without installing any software or creating an account. Everything runs directly in your browser for maximum privacy. Your files and data never leave your device.
Use it for quick tasks at any time from any device — desktop, tablet or mobile. No subscription, no ads, no limits.
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Instant results
No server processing or wait
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100% private
Files stay on your device
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Always free
No subscription or fees
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Mobile ready
Works on any device
How to use PDF to PDF/A
- Upload your PDF file by clicking or dragging it into the upload area
- Set the options specific to this PDF operation
- Click the action button — all processing runs locally in your browser
- Download the output PDF file to your device
Why use OnlineToolsPlus?
PDF tools on OnlineToolsPlus use PDF-lib — a JavaScript PDF engine that runs locally in your browser. Your documents are never uploaded to a server, which means no privacy risk for sensitive contracts, financial documents or personal files. With 25+ free PDF tools covering merging, splitting, compressing, editing and converting, you have a complete PDF toolkit at no cost.
Frequently asked questions
What is PDF/A and why does it matter?
PDF/A is an ISO standard for long-term archiving of documents. It ensures the document will look the same decades from now by embedding all fonts, color profiles, and content directly in the file without external dependencies. Required for legal, government, and archival submissions.
Which PDF/A version does the tool create?
The tool converts to PDF/A-1b, the most widely required and supported archival standard. This covers visual appearance preservation for long-term storage.
Will my document look different after conversion?
Minor differences may occur if fonts needed to be substituted or color profiles adjusted for compliance. The overall layout and content should be visually very similar.
Can I convert a scanned PDF to PDF/A?
Yes. Scanned PDFs convert to PDF/A preserving the page images. For fully searchable PDF/A from a scanned document, OCR needs to be applied first.
Does the file size increase?
Often yes. PDF/A embeds everything that might otherwise be referenced externally, which can increase file size, particularly for files using external fonts or color profiles.
Is PDF/A required for court filings?
Many courts and government agencies do require PDF/A for electronic submissions. Check the specific requirements of the system you are submitting to.
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Last updated: April 11, 2026
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