Secure-PDF Professional full version offline installer for Windows may be downloaded for free. It is a toolbox full of security features for PDF files, such as signature and encryption.
An overview of Secure-PDF Professional
This utility is a security toolkit that allows you to sign and encrypt PDF documents. It allows you to encrypt PDF documents, either your own or those of others, using up to 256-bit key strength (AES).
Include a password to make it so that users must input the correct password in order to read the encrypted content.
Secure-PDF provides a digital signature feature that ensures the recipients of your PDF documents are receiving an original document that hasn’t been altered afterward.
Secure-PDF Professional’s features
Toolbox for security with encryption and signatures for PDF files
Watermark a PDF document.
Secure PDF files
Set the owner information of a PDF document and digitally sign it.
Technical Specifications and System Prerequisites
Operating systems supported: Windows 11, Windows 10, Windows 8.1, and Windows 7.
RAM: 2 GB of RAM (memory); 4 GB is advised.
200 MB or more of free hard disk space