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The PDF Protect and Unprotect Software is a dual-featured software program of SysInfoTools that supports applying protection for PDF files as well as removing restrictions from them. By using this software user can protect PDF files by applying passwords on them or restrictions on editing, copying and printing. It also supports unlocking the password-protected PDF files and removing all types of restrictions from them. The software safely executes the process of protecting and unprotecting PDF without causing any changes or alteration. Demo version is free for evaluating the performance of software.