PDF files can be encrypted. This feature should be familiar to everyone. I have shared the encryption method with you before. So how do you delete the password from an encrypted PDF file? But it also distinguishes between known passwords and unknown passwords. Today we share how to delete the password of a PDF file.
First of all, there are two types of PDF encryption: opening password and restricting editing. The encryption methods responsible for these two encryption methods are different. The open password is used to open the PDF file. Only by entering the correct password can you open the PDF file and see the file content. Restricted editing is used to edit PDF files, which means that the file can be opened directly and the file content can be viewed directly, but we can only edit the PDF file after entering the password (the inability to paste, copy, and print is also due to restricted editing).
When we want to cancel the password, we can open the PDF file in the PDF editor. If we want to delete the opening password of the PDF file, we must first enter the correct opening password. After opening the PDF file, click File – Properties – Security – Delete Password. If we want to remove restrictions on editing, we need to remove the permission password underneath.
Then we want to unencrypt the PDF that we have forgotten the password, but the easiest way is to try various passwords ourselves, and we may try the correct password. But after trying it ourselves without success, we can also use password tools to help us decrypt. For example, Okafon PDF Decryption Master.
The [Retrieve Password] function in the software is to unencrypt the PDF opening password. Because the PDF file opening password cannot be directly destroyed or bypassed, we can only find the correct password. The [Retrieve Password] function provides four types of password recovery methods. Retrieve the password faster.
The [Unrestriction] function is used to remove restrictions on editing and encryption of PDF files. Using this function, we do not need to retrieve the password. Just add the PDF file to the software and click [Start] to unencrypt the PDF.
