PDF/A embeds fonts and forbids features that need external resources, which is why libraries, courts and regulators require it. Output targets PDF/A-2b.
In practice: (1) Use it for records that must stay readable for decades. (2) Fonts are embedded, so files get slightly larger. (3) Encryption is not allowed in PDF/A — remove passwords first.
Frequently asked questions
Which PDF/A level do you produce?
PDF/A-2b, the practical archival level accepted by most institutions.
Why is my PDF/A file bigger?
Embedded fonts and an output intent profile are mandatory in the standard.
Do it in the full tool
Open PDF to PDF/A for all options, or jump straight to another step below.