Unlock PDF - user and owner password

Tags: pdf unlock, pdf file unlock, how to unlock a pdf, unlock protected pdf, unlock pdf for editing

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Before we view each pdf unlock tool. Try to make it clear that:

Owner password is Permissions Password / Master Password. Set to protect PDF from printing, editing, copying, etc.
User Password is Open Password. To prevent from opening PDF. Open password can be removed.

For different protections and encyptions, you need different tools. However, unlock pdf user password is complex and very time-consuming while unlock pdf owner password is easy and quick.

Comparison of Different PDF Unlocker

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How to unlock PDF?

To protect privacy or copyright, lots of PDF are secured with password which at the same time brings us great trouble to use PDF file. PDF Password Remover is such a small (only 4.47M) and easy to use software helping you to unlock PDF by removing owner password and user password in seconds.

Batch decryption is supported which enables you to unlock 200 PDF documents stimueaously. Besides it supports all PDF formats version and encryption leavel to 128bit RC4.

Encryption level:

1) 40 bits or 128 bits ( more bits more secure)
2) RC4 and AES (two specifications for the encryption of electronic data) (AES is complicated than RC4. thus more secure).

Simple guide to unlock PDF

Step1: Add files.
Click"" to load encrypted PDF. PDF with open password will be marked with a "lock" button, click it to type in the open password.
PDF only with permission password will displayed with size and page number.

Step2:Set output folder
Easy to select as you can see in the picture.

Step3: Start to unlock PDF

Click Start button. After conversion, Click the file name in blue under status column to open it. You'll find in Adobe Reader that your PDF is unlocked.

A-PDF Restrictions Remover

Main features:

-->Remove only owner password.

-->Two removing modes: remove restrictions & remove restrictions and save as.

-->Right click PDF file in Explorer to remove restrictions and unlock PDF.

-->Command line Version to handle your PDF in script and in batch mode.

PDF Password Unlocker

Main features:

Unlock PDF: Recover lost PDF open Password in fast speed.

Recovery options: Brute-force Attack, Brute-force Attack with mask, Dictionary Attack.

Unlock PDF by using the advanced search algorithm and multiple-core processors.

 

PDF Password Cracker

Main features:

Force-crack: Remove restrictions but don't tell you the permission password.

Recall if: Recover PDF open password to unlock PDF. (Enable you know the password).

Stand alone and do not need other program to open PDF.

Various options to decrease cracking time.
Three modes: Brute-force, Dictionary, Key-search.