Wonderfulshare PDF Protect is a powerful application which could be used to encrypt, secure and lock your PDF files with owner password and user password. It enables you to protect your PDF files from unauthorized access, with as little effort as possible. Quick and easy - get started right away Encrypt PDF files with user password Encrypt PDF files with owner password Multiple PDF files could be locked or unlocked High encryption level: 128-bit Simple and straightforward design Export encrypted PDF files automatically and fast Effortless manufacture process with only several clicks PDF Protect will encrypt PDF documents using owner password and user password. It will help you protect these important PDF files easily from unauthorized access, permission set and so on.