PDF Encrypt & Decrypt

By using this app you can batch encrypt or decrypt thousands of PDF files in just a few seconds. We really offer a good performance PDF soft. Features: * Batch encrypt or decrypt thousands of PDF files. * Prevent opening and viewing PDF without entering the correct open password. * Prevent printing of the document. * Prevent copying and changes to the document. * Set password for opening pdf file * Set password for modifying permission * 128 bits encryption and 40 bits encryption * Prevent copy contents but allow read * Precent modify annotations but allow fill-in * Compatible with all common PDF readers, such as Preview.app or Adobe Reader. * Remove passwords from PDF files that have encryption before.