Sometimes working with numerous documents can take its toll on your memory and you might start forgetting vital details such as account passwords.

If you find that one or more of your documents has been locked out of your reach, you might want to try password decryption tools such as Cocosenor PDF Password Tuner that can help you recover their contents easily.

This application can help you unlock password-protected PDFs by using a password dictionary and brute-forcing. Brute-forcing refers to trying as many passwords in a short time until a valid one is identified.

You can choose what character types to use, set a range by specifying its ends, include blank spaces, toggle special symbol and digit usage, as well as defining a mask.

Aside from the range of the attack, you can define other parameters as well, such as the length of the password, the dictionary, auto-saving options and other general settings.

You can set a dictionary file by loading it from your computer. It is also possible to activate smart mutations, set the app to try all possible lowercase and uppercase combinations, as well as convert to OEM encoding by ticking the corresponding checkboxes.

Cocosenor PDF Password Tuner fashions a minimalistic interface so that even inexperienced users can benefit from its capabilities, regardless of their PC skills or previous experience with similar problems. The only requirement would be a basic understanding of how brute-forcing works.

The application sports both toolbar buttons and traditional menus, letting you operate its functions in multiple manners, depending on your needs. The tabbed layout lets you navigate through its sections without significant efforts.

All in all, if you need to decrypt password-protected PDFs, Cocosenor PDF Password Tuner might be exactly what you're looking for. It can take a while, but with a comprehensive dictionary, patience, and a high-end computer, you can recover it in no-time.