PDF/A is an ISO standard (19005) for long-term archival. It embeds fonts, standardizes metadata, and removes external dependencies.

Which level should I use?

PDF/A-1b is most compatible for government. PDF/A-2b adds modern features. PDF/A-3b supports embedded attachments for e-invoicing.

Is it required for government?

Many courts, tax authorities, and EU agencies require PDF/A for official submissions.

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