PDF to PDF/A Converter
Convert standard PDF files to ISO standardized PDF/A format for long-term document preservation and legal archiving.
Select PDF document
Drop your PDF here to convert to ISO 19005-compliant PDF/A
How to use PDF to PDF/A in 3 easy steps
No software installation required. 100% free and runs smoothly on mobile, tablet, or desktop.
1. Select PDF File
Upload the document you need to preserve long-term.
2. ISO Standardization
Device-independent color profiles and all font glyphs are embedded.
3. Download PDF/A
Compliant with ISO 19005-1 and ISO 19005-2 standards.
Guaranteed Document Confidentiality
Your files stay on your machine. Client-side tools do not send your files to our servers.
Frequently Asked Questions
Everything you need to know about PDF to PDF/A on HoudiniPDF.
What is PDF/A?
PDF/A is an ISO-standardized version of PDF specialized for digital preservation and archiving of electronic documents.
Why do governments and courts require PDF/A?
Because PDF/A strictly forbids external font dependencies and encryption, ensuring the file will render accurately 50+ years in the future.
How long are files kept on the server?
All temporary files are permanently wiped automatically after 30 minutes.
What is the maximum file size?
Documents up to 50MB are supported.
Is there a limit on conversions?
No, HoudiniPDF is 100% free with unlimited conversions.
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