SysInfoTools Software hereby strongly recommends users to evaluate PDF Protect & Unprotect tool before purchasing the licensed version. Users can download free demo version of this tool for evaluation purpose. Demo version of the tool contains all the functionalities and features. Using demo version, users can apply password-protection as well as other restrictions on their PDF files. But the output PDF files will be saved with watermark on them. This is the only limitation which can be removed by purchasing the license version.
Extensive support for all major Windows-based operating
systems including the latest Win 10
Pentium class processor
Minimum 512MB RAM (1GB recommended)
50 MB for Software installation
Disk Space - Enough space to store recovered output