Password protection gives a sense of contentment that the system and the files saved in it is secured from any kind of unauthorized access. The idea of adding a security code to open a file has been popular from a long time and most of the applications offer this option of password protection. But Adobe Acrobat is a little different from other in terms of providing security features for the PDF file. Lets us know how?


#1: Adding Local Restriction to the PDF File Content

This is known as owner password for PDF. Here, the owner of the file allows others to view the contents of PDF file but restricts to copy, edit, print, or extract the data. This way, the data can be read or referred by others and by no way it can be misused. This quality of PDF file is considered very helpful in exchanging information at enterprise level, for internet marketing, to ensure safety of intellectual property etc. Let us understand it by a real time example. You might refer to Google Books online. Ever noticed that you are restricted to copy its contents, edit it, print it but at the same time view entire data saved in it. This is because the PDF file is owner password protected.


#2: Adding Open Document Restriction for PDF File

This is something you must be aware about. Just like any other application, you have to enter the security code to open the PDF file. It is called User Password for PDF File. It has its own advantages when the data saved in PDF is confidential and the owner does not want to allow anybody to read its contents.


To understand this by an example, just check out a mobile or credit card bill that you receive through email. It is sent in a PDF file and you will notice that you cannot open it without entering the security code and even cannot make any changes to it. This means the file has owner and user password set to it. This ensures that only the person with access to security code can open it but no can edit it.


The best part of setting a PDF file with open document password is they cannot be unlocked with password recovery tools. Even after applying brute force, it is quite difficult to unlock a PDF that has this security set on it.


However, there are scenarios when the password set to control file access for other creates troubles for the file owner itself. This is when the requirement for solution arises that can help to unlock PDF file or remove restrictions from it. In the later part, we will discuss some techniques that can be used to remove password from Adobe PDF file.


How to Unlock PDF File Having Owner and User Password?

#1: When it comes to unlocking a PDF that has local restrictions like copy, modify, print set to it, the idea of using online services can be adopted. There are a number of online PDF unlocking services that will give solution remove permissions from the file.


Some are effective while some are not. You have to share their PDF file data with them, agree to their terms and conditions, and yes you have to add a PDF file less than the defined size. This way, you can avail free service to unlock the Adobe file.


#2: Another is the user password. As we discussed above, you cannot normally open a PDF file that prompts for password. In such a scenario, you have to adopt a third party solution that can help you out to eliminate open document security from PDF file.


#3: There are paid solutions that can help to unlock PDF file set with owner and user password. The other reason to invest in them is these tools keep the source PDF file untouched and generate a new PDF file that is free from password. One such name that can be recommended for investment is PDF Unlocker software. This tool makes PDF file free from both master and open document restriction.


If Adobe Acrobat available, then it is possible to remove both types of security from PDF file but for that the passwords that are being set to the files should be known. In case you forgot the password, then the suggestions shared here can be helpful.