Do you have PDF files and want to protect them against unwanted tampering? Then go with Restrict PDF Software that efficiently locks PDF files? Restrict PDF is one of the most reputed utility to restrict PDF permissions like copying, editing, printing, viewing etc. With Restrict PDF program users can quickly apply PDF restrictions & set PDF permissions. Restrict PDF program enable users to apply 2 security settings: 1) Add Password to PDF Document – To add user password to PDF files. 2) Add Restrictions to PDF Documents – To apply restrictions like: copy, edit, print on PDF files. Restrict PDF program allow users to add user password to PDF files & apply PDF restrictions on PDF files of Acrobat version up to 9. Restrict PDF program can be users to prevent PDF copying, prevent PDF printing, prevent PDF editing, protect PDF, secure PDF file etc. The program to restrict PDF files & protect PDF files successfully runs on Windows 98, ME, NT, 2000, XP, 2003, Vista, 7 systems. The Software protects PDF files from printing, copying, extracting, accessing, modifying, etc. The Tool offers you trial version so that user can easily restrict PDF files upto 25 KB file size or you can buy software’s full version at $25.