January 14, 2015

How to Secure and Edit a Secured PDF Document

Why we should have to secure PDF file?
  1. PDF (Portable document format) is popular document sharing format over the Internet. PDF file are usually used in formal or informal occasions.
  2. Because of various advantages offered by the portable document format, lots of confidential documents are transferred by people via Internet, e-mail etc.
  3. If PDF file is not protected with password or permissions, any persons can open even change PDF document contents, which will lead to PDF crack and receivers cannot get the right one.

Part 1: How to Secure a PDF File

If you are the creator and owner of PDF file, you can protect PDF file with password and permissions by yourself now.

The following article in this part will mainly talk about how to secure PDF files with password and permissions.

Step 1: When PDF file is prepared and open, navigate to Protection – Encrypt – Encrypt with Password in Tool pane at the right side of PDF file window. Or in tool bar, click Encrypt button and select "Encrypt with Password".

choose Encrypt with Password option for PDF file

Step 2: In pop-up Password Security Settings window, document open password and permissions can be set.

set open and permissions password for PDF file

  • Check Require a password to open the document, and type a secure password in Document Open Password box.
  • Check box under Permissions, and type a different complex password in Change Permissions Password box. Click OK.
Step 3: Then password confirmation dialog pops up. Type document open and permissions password again in dialogs and click OK.

confirm PDF document open password

confirm PDF document permissions password

Step 4: The last step is to save changes on this PDF file, otherwise, PDF file will not be secured really with password and permissions.

Part 2: How to Edit a Secured PDF Document

When PDF document is secured with open password and edit permissions, open password should be known to open secured PDF document, then remove permissions, PDF document can be edited.

Step 1: Open secured PDF document.

If you have PDF open password, open PDF document instantly, otherwise, PDF document open password should be found first. For example, take effective PDF Password Genius to find PDF open password.

1. Get, install and run PDF Password Genius on your computer.

2. Import protected PDF document by clicking Open button in tool bar of PDF Password Genius.

3. Choose password recovery type and make settings for it in order to find PDF password with as short time as possible. 

 4. Begin to recover PDF document password after Start button clicked.

find secured PDF document open password

5. Copy password in window appearing following and open secured PDF document with it.

open PDF document with recovered password

Step 2: Remove PDF Edit Permissions.

cannot edit PDF document
1. Turn to "Encrypt" button in tool bar, click it to choose Remove Security.

choose Remove Security option for PDF document

2. Enter permissions password you have in pop up password box. Click OK. Then you can see the Restrict Editing button become available, that means PDF security password has been removed.

remove PDF edit permissions

Step 3: Edit PDF document without any restrictions.

Above steps are intended to remove secured PDF document security, so if you want to protect PDF after editing, you should set document open password and permissions again.

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