Advanced PDF Protector automates the task of protecting PDF documents with 128-bit encryption, various security permissions and passwords. The application automatically imports all unencrypted PDF documents from a specific directory and all of its subdirectories. Alternatively, users can manually import PDF documents that need to be encrypted. For each imported input PDF document the application creates a 128-bit encrypted copy of the original PDF file. Advanced PDF Protector provides users with an interface to select output PDF version, enter user and owner passwords and allow / disallow high-resolution printing, low-resolution printing, commenting, form field fill-in or signing, content copying, document assembly or changing in the output PDF files. In addition to this, the application automatically persists most recently used input and output directory paths, detects already encrypted input PDF files and allows users to sort input PDF files by path, size and creation date.