Add Security to PDF - Version 3.0 Instantly Add Security to PDF with Restrict PDF software. User can set the protection into PDF files to protect them from other person. The software Add Security to PDF files by passwords setting. The tool add permission password that protect PDF text from printing, modifying, editing, extracting, copying, etc or you can set user password on PDF to protect PDF from being opened or accessed. The Software disables opening, copying, printing, extracting, modifying of PDF data. The Software operates Windows system (Windows Vista, 98, ME, 2000, XP, 95, 7, etc) and supports PDF documents of Adobe Acrobat edition up to 9. Trial version of Tool is available that has restriction to Add security on PDF up to 25 KB file size and restrict more than 25 KB, buy license of Software at 25$.