PDF information

Learn about PDF standards, specifications, and digital signature fundamentals.

📄️ PDF standards

This page explains what PDF is and the various international standards that govern the format.

📄️ PDF/A specification

This page explains what the PDF/A specification is, the versions available, and the differences between the versions.

📄️ Digital signature basics

Learn about electronic signatures and their subtype digital signatures. Find out about public key infrastructure, certificate authorities, and electronic signature laws and regulations.