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PDF to PDF/A
Prepare documents for long-term archiving with PDF/A metadata.
Choose a fileLoading the tool…
PDF/A is the ISO standard for documents that must stay readable for decades. ModifyPDF adds the metadata, identifiers and color profile the standard requires.
How to convert PDF to PDF/A
- Choose your PDF.
- Pick the conformance level (PDF/A-2b is recommended).
- Click “Convert to PDF/A” and download.
Frequently asked questions
Which PDF/A level should I use?
PDF/A-2b suits most archives. Use 1b for maximum compatibility with older systems, or 3b if you need embedded attachments.
Is the output guaranteed to validate?
Full compliance also depends on the source file, for example all fonts must be embedded.
Are my files uploaded to a server?
No. ModifyPDF processes files with JavaScript inside your browser. Your documents never leave your device, and nothing is stored after you close the page.