Forgot the password to open your PDF file? PDF Password Unlocker provides you an easy and efficient way to recover PDF password. Various PDF files (*.pdf) are supported, no matter whether the files are created by Adobe Acrobat or other PDF applications.
Key Features
Powerful Password Recovery Tool
Recover user password from encrypted PDF files created by all versions of Adobe Acrobat (include Acrobat 9) and other PDF applications.
Note: A PDF user password is the password used to restrict the opening of a PDF file. In Adobe Acrobat, the PDF user password is called the document open password.

Recover Fast with Advanced Algorithms
Recover PDF password at high speed by using advanced and unique algorithms. What’s more, Multi-core CPU and NVIDIA CUDA technologies will be added in next update to accelerate the recovery speed greatly.

3 Efficient Password Attack Methods
Brute-force Attack – Try all possible password combinations to retrieve forgotten PDF password.
Brute-force Attack with Mask – Shorten the recovery time by specifying the forgotten password search range like password length and character set, etc. (Highly Recommended)
Dictionary Attack – Try the password combinations in the built-in dictionary or a self-created dictionary as your lost PDF password

Auto-save Recovery State
Allow you to interrupt and resume the password recovery process at any time by automatically saving the recovery process every 15 times (this time interval can be changed as you wish.)

More Features
System Requirements
OS: Microsoft Windows 98/2000/2003/2008XP/Vista/7 (32-bit or 64-bit)
CPU: 1 GHz processor (2G Hz is recommended)
RAM: 512 MB of RAM (1 GB is recommended)
Disk space: 11 MB of free hard disk space
Demo Limitations
Trial version recovers the first 3 characters of your lost PDF password.
Trial version doesn’t support Dictionary Attack

PDF Password Unlocker helps me to recover my lost password-protected PDF document, it is great! - Howley
