Encrypted PDF files are no longer unfamiliar to everyone, so how to remove the password from encrypted PDF files? However, for PDF files with encryption protection, have we ever encountered the situation of forgetting the password or not knowing the password? In these cases, how should we unencrypt PDF?
First of all, there are two types of PDF encryption: open password, limit editing. The encryption methods responsible for these two encryption methods are different. The opening password is used to open the PDF file. Only after entering the correct password can the PDF file be opened and the content of the file can be seen. Restricted editing is used to edit PDF files, that is to say, the file can be opened directly and the content of the file can be viewed directly, but we can only edit the PDF file after entering the password (it cannot be pasted, copied, or printed because of 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 open password of the PDF file, we must first enter the correct open password to open the PDF file, and then click File – Properties – Security – Delete Password. We want to delete the restricted editing, that is, delete the permission password at the bottom.
Then we want to unlock the PDF encryption of the forgotten password, but the easiest way is to try various passwords ourselves, and it is possible to try the correct password. But after trying it myself, we didn't succeed. We can also use password tools to help us unlock the encryption. For example, Okaifeng PDF Decryption Master.
The [Retrieve Password] function in the software is to unencrypt the password to open the PDF, because the PDF file open password cannot be directly destroyed or bypassed, so we can only find the correct password. The recovery method can retrieve the password faster.
【Remove Restrictions】The function is used to remove the restrictions on editing and encryption of PDF files. With this function, we don’t need to retrieve the password. Just add the PDF file to the software, and click [Start] to unencrypt the PDF.
