Files with the .PDC extension contain a PDF file subjected to multi-level protection and encryption. The 256-bit AES encryption, DRM controllers that protect digital rights, and the network-based real-time licensing system protect the file from unauthorized access – it can be opened, copied, shared, modified, and printed only by authorized users.

Such protected PDC files are created by the Lizard Safeguard PDF software, which converts a regular PDF file into a secure format.