Benefits and features list: Quick and easy - get started right away. Drag and drop your multiple PDF files. Encrypt PDF files with user password. Encrypt PDF files with owner password. Eight permissions could be choosed to prevent from unauthorized access. Anti-copying technology prevents other readers from copying text within your PDF files. High encryption level: 128-bit. Remove the owner password. Remove the user password. Effortless manufacture process with only several clicks. Batch process support.