How to remove file protection from PDF?

php editor Youzi will introduce you how to unprotect PDF files. PDF files are often used to protect document content, but sometimes we need to edit or copy the content. There are usually two ways to unprotect a PDF: enter a password to unlock it directly or use an online unlocking tool. When entering your password, make sure you know the correct password. When using an online unlocking tool, upload a protected PDF file and the tool will help you unlock and download the unprotected file. These simple methods can help you unprotect PDF files, allowing you to easily edit or copy their contents.

There are two ways to unprotect PDF files. The first is to remove the password if the password is known.

If you want to remove the PDF opening password, you can open the PDF file through the PDF editor and find [Remove Security Settings] in the [Protection] option list.

After the dialog box pops up, click [OK], and the password for opening the PDF file will be removed. When you reopen the file, you no longer need to enter the password.

If you want to remove the PDF restriction editing password, open the file through the PDF editor and select [Protect] - [Remove Security Settings].

After the dialog box pops up, enter the originally set password and click [OK]. The password restricting editing of the PDF will be removed.

If there is no password, can the PDF file protection still be deleted? The PDF editor does not have a password retrieval function, so you cannot remove protection directly in the editor without a password.

In this case, we can use some PDF tools with multiple functions.

Take the Pepsi Niu PDF password recovery tool as an example (as shown in the figure below). Although the "open password" of the PDF file cannot be directly removed, you can use the "Retrieve Password" module to retrieve the password first, and then Remove the password according to the first situation.

Using the "Unrestriction" module, you can directly remove the "restrictions on editing" of PDF files without a password.

In addition, if it belongs to the first situation, you know the PDF opening password and want to remove the step of entering the password, you can also use the "Remove Password" module to remove the opening password.

For the above functions, you only need to select the corresponding module in the tool.

Tool link: Pepsi Niu PDF Password Recovery Tool

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