Compare 2 different PDF documents

Hi Tony,

As error message given, "Documents have security settings which prevent comparison" this error message appears when any one or both the documents are secure.

Open File>right click> Document Properties>Security

I keep receiving error message "These Documents have security settings which prevent comparison"  Can I change the security settings so I can compare?

Document's security settings are generally created by the owner, while creating it. You can change the document's security settings only if you own it or you need to contact to the owner of the file.

Regards,

Akanchha