Encrypt Adobe pdf files with Pdf encryption software, compatible with Windows & supports latest advance encryption security (AES) 128-bit protection. Add pdf open password and permission password to restriction print, edit & copy. In fact, you have option to select RC4 128-bit or 40-bit encryption level. Restrictions are optional, select if you wish to disallow pdf editing, pdf printing, pdf copying, pdf form filling, pdf commenting, pdf extraction & pdf conversion. This features rich application supports encryption of bulk pdf files in a single batch process. Free trial version is provided to check the actual working of document. A watermark string appears on pages in demo. Pdf encryption process involves few simple steps to protect pdf files. Import pdf document, set pdf encryption level, input user password (if needed), input owner password (if needed), browse output location where secured pdf will be saved and final step is to hit Encrypt pdf button. Tool contains help button for instant user support. Once document is encrypted with the tool, only authenticated person can open & use your secured pdf files. Thus preserves the privacy of confidential documents.