Legal AI glossary

PAdES

PDF Advanced Electronic Signatures: the ETSI standard for embedding electronic signatures in PDF files.

Last updated 28 October 2026

What PAdES means

PAdES is a family of European standards from ETSI (EN 319 142) that defines how electronic signatures are embedded in PDF documents, including information needed to validate the signature later, such as certificates and timestamps.

It is commonly used for advanced and qualified electronic signatures under the EU eIDAS Regulation, where long-term validation matters.

Frequently asked questions

What is PAdES?

PDF Advanced Electronic Signatures: the ETSI standard for embedding electronic signatures in PDF files.

Sources

  1. ETSI EN 319 142 (PAdES)

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