PDF Encrypt Tool can be used to protect your PDF files with 128-bit strength user and owner passwords set all permissions(such as coping editing printing selecting text and graphics fill in etc) and prevent PDF files from being printed changed copied extracted signed filled assembled andor merged. It is the fast affordable way to encrypt a lot of pdf files to encrypted pdf files once time for saving your time! Its easy-to-use iIt is very powerful and easy-to-use! PDF Encrypt Tool supports batch Encrypt mode. PDF Encrypt Tool supports all popular PDF formats. PDF Encrypt Tool supports 40-bit Encryption and Adobe Advanced 128-bit Encryption. PDF Encrypt Tool can be run independentlydoes not need Adobe Acrobat.