PDF DocOfficeWhat Is PDF/A and When Do You Need It?
A PDF built to last
PDF/A, where the A stands for archival, is a standardised version of PDF designed so that a document can be opened and displayed the same way many years from now. It is defined by international standard ISO 19005.
A normal PDF may depend on outside resources, such as fonts that are not embedded, or on features that could stop working in the future. PDF/A avoids that by requiring everything to be inside the file.
What the rules require
The main rules are simple to describe. All fonts must be embedded. The colour must be described in a way that does not depend on a specific device. Audio, video and executable scripts are not allowed. Encryption and passwords are not allowed either, because an archive must be readable without a key.
There are several levels, such as PDF/A-1, PDF/A-2 and PDF/A-3, and each allows slightly different features.
Who asks for it
Government agencies, courts, libraries, universities and companies with long record-retention duties often require PDF/A. Theses, tender documents, registry filings and electronic invoices are typical examples.
If a website or an official tells you to upload a PDF/A, they usually also state which level. Always follow their instructions, because some portals check the file automatically.
How to prepare a file
The best way is to create PDF/A from the start, by choosing that option when exporting from your word processor. If you only have a normal PDF, a converter such as our PDF to PDF/A tool can prepare it. Remove passwords first, and make sure fonts display correctly.
No converter can guarantee compliance for every file, so if strict compliance matters, check the result with a validator provided by the receiving organisation.
Do you need it for everyday files?
Usually not. For daily sharing, a normal PDF is lighter and more flexible. PDF/A is for records you must keep reliably, not for documents you send around casually.
Related guides
- How to Convert a PDF to PDF/A for Long-Term Archiving
- How to Compress a PDF and Reduce File Size Without Losing Readability
- How to Protect a PDF with a Password