A-PDF Password Security is a desktop utility program that lets you change password security of existing Acrobat PDF files.
With A-PDF Password Security, you can set a PDF file if need a password to open, and/or if have access restrictions. For example, allow or not allow printing, copying content or changing file etc. You can modify metadata at the same time, includes author, title, subject and keywords. A-PDF Password Security even support disable/enable expiry function.
A-PDF Password Security works with unencrypted or encrypted PDF files and does NOT require Adobe Acrobat.
Password Pool: If you need unsecure a batch of PDF files with one password, you can special a password pool. A-PDF Password Security will try the passwords one by one, instead of input them manually.
Hot Directories: You can set up a monitored directory, where all files written to that directory will be encrypted as they are saved. The original files can also be moved to a backup directory. All of the operations will be recorded in log files.