Icon of program: Guaranteed PDF Decrypter …

Guaranteed PDF Decrypter (GuaPDF) for Windows

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Key Details of Guaranteed PDF Decrypter (GuaPDF)

  • Remove restrictions and/or password on PDF files.
  • Last updated on 10/29/2013
  • There have been 2 updates
  • Virus scan status:

    Clean (it's extremely likely that this software program is clean)

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Editors' Review

Download.com staff

The software world is full of PDF utilities from the four corners of the globe. PSW-soft's Guaranteed PDF Decrypter (GuaPDF) is an example; its developers' page is called Russian Password Crackers, which sounds like something out of the Cold War but in fact is a group specializing in cryptosecurity. GuaPDF is designed to remove various restrictions from PDF files, up to 256-bit key encryption, and to decrypt 40-bit key passwords of any length in any language. It can also harness the processing power of Nvidia CUDA-capable graphics cards to accelerate decryption.

GuaPDF downloads as a ZIP file but opens immediately and runs locally on your PC; there's no need to install anything. This compact program doesn't modify the files it handles in any way, which is part of the decryption guarantee. Right-clicking its System Tray icon accesses the program and an option to choose the decryption's priority in accessing system resources. The interface itself is about as basic as it gets, just a PDF-based interactive dialog with File, Options, and Help menus, progress bars for the key space and the current key, and a main display. We tried several PDFs; GuaPDF quickly identified all characteristics, but the free demo version wouldn't fully decrypt the larger files. Smaller files decrypted instantly, though.

You don't need to be an industrial spy to require PDF decryption; all you need to be is forgetful. We tested GuaPDF in both Windows 7 and Vista with excellent results. It's available in several licensing configurations for regular and commercial users.

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Full Specifications

WHAT'S NEW IN VERSION 3.2
Version 3.2 includes OpenCL support for NVIDIA and AMD GPU cards.
GENERAL
Release
January 23, 2012
Latest update
October 29, 2013
Version
3.2
OPERATING SYSTEMS
Platform
Windows
Operating System
Windows 2003, Windows 7, Windows XP, Windows 10, Windows Server, Windows 2000, Windows Vista
Additional Requirements
None
POPULARITY
Total Downloads
71,868
Downloads Last Week
1
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User Reviews

1.8/5

5 User Votes

Developer's Description

By Guaranteed Software
Remove restrictions and/or password on PDF files.
This is a GUI utility which allows you to instantly remove various operation restrictions on PDF files, such as printing and editing (even with 128 or 256 bit key, Acrobat 8.x-10.x AES encryption and compressed files supported). It also can decrypt PDF files with password for opening (40 bit key only)