What Is PDF/A, and When Do You Actually Need It?

PDF/A comes up in exactly one context: someone needs a document to still open correctly in 20, 30, or 50 years. If that's not your situation, you almost certainly don't need it — but it's worth understanding what it actually is.

What "archival" means for a file format

A regular PDF can rely on things that might not exist in the future: a font that isn't embedded (and might not be installed on whatever computer opens it later), a link to an external file, or interactive JavaScript that depends on a specific viewer's capabilities. Any of these can silently break or look different years down the line. PDF/A, standardized as ISO 19005, closes off exactly these risks by requiring that the file be fully self-contained and free of anything that depends on the environment around it.

What PDF/A specifically requires

• All fonts embedded. The document never depends on a font being installed on the viewing device — every character's exact appearance travels with the file.
• Device-independent color. Color is defined in a way that doesn't depend on a specific monitor or printer's color profile, so it renders consistently anywhere.
• No encryption. A password-protected file could become permanently inaccessible if the password is lost — unacceptable for an archival format.
• No JavaScript or executable content. Anything that requires active code to render correctly is banned, since that code's behavior isn't guaranteed to work in future software.
• Embedded metadata (XMP) describing the document in a standardized, machine-readable way.

Who actually needs it

PDF/A is a real requirement — often a legal one — for:

• Government agencies and courts filing official records
• Libraries, archives, and universities preserving research or historical documents
• Healthcare organizations retaining medical records for legally mandated periods
• Financial institutions archiving records for compliance and audit purposes

If none of these describe your situation, a standard PDF is simpler and just as suitable — PDF/A's restrictions (no editing, no encryption) are a poor fit for a document you still need to actively work with.

Converting to PDF/A

Our PDF to PDF/A tool re-processes an existing PDF to meet the standard — embedding fonts, normalizing color, and writing the required metadata — so it's ready for long-term, compliant storage.