UNlock PDF Password is to crack the password of encrypted Acrobat PDF document for you to easily access and edit password-protected PDF documents. It not only helps to unlock the file, but also removes editing, printing and copying password restrictions. It is easy to use while with powerful attack functions. It provides three types of password attack, brute-force attack, brute-force attack with mask, and dictionary attack. You can use either of the attack for your situation to effectively crack the password in a time as short as possible.