Add PDF Protection - Version 3.0 You can Add PDF Protection by Restrict PDF software,Software allows you can Add two kind of protection onPDF, you can add owner password to protect PDF filesfrom being copying, editing, modifying, printing, etcand you can add open password security to your PDFfiles with open password user to protect PDF files fromopen. Software is easily to use and one clickapplication so within few clicks of mouse you can AddPDF Protection without wasting time. We have demoversion of software which can add protection upto 25 KBPDF file size and for protect more than 25 KB PDF filesize purchase full license of software a $25.