PDF Security & Access Issues

How to Password Protect a PDF from Editing in Adobe Acrobat

Natalie Taylor Oct 18, 2026 869 views

Question details

The user wants to apply a password to restrict editing in a PDF document using their Adobe Acrobat premium features.

How to Password Protect a PDF from Editing in Adobe Acrobat

Product: Adobe Acrobat
Device & OS: not provided
Scenario: Securing sensitive PDF documents by locking them against unauthorized modifications or formatting changes.
Observed behavior: The user is unable to locate the specific option or menu to configure a permissions password for editing protection in the Acrobat interface.

Before you start

Ensure you are signed in to an account with an active Adobe Acrobat Premium or Pro subscription, as restricting editing permissions is a paid feature.

Solution 1Recommended

Restrict Editing Using the Protect Tool in Adobe Acrobat

Set a permissions password to block unauthorized users from altering the document's content, formatting, or pages.

Adobe Acrobat uses two types of passwords: a Document Open password (to view the file) and a Permissions password (to restrict printing, editing, and copying). To stop someone from modifying your document, you need to configure the Permissions password.

Open the Protect Tool

Open your PDF document in Adobe Acrobat. Go to the 'Tools' tab at the top of the window and select 'Protect' (represented by a shield icon).

Access Encryption Settings

In the Protect toolbar that appears at the top, click on 'Advanced Options' and choose 'Encrypt with Password' from the drop-down menu. Click 'Yes' if prompted to change the security of the document.

Enable Editing Restrictions

In the Password Security settings dialog, scroll down to the 'Permissions' section. Check the box that says 'Restrict editing and printing of the document'.

Set the Permissions Password

Enter a strong password in the 'Change Permissions Password' field. In the 'Changes Allowed' drop-down menu, select 'None' to block all editing capabilities.

Save the Document

Click 'OK', re-enter your permissions password when prompted to confirm it, and then save the document (File > Save) to apply the new security settings.

Restrict Editing Using the Protect Tool in Adobe Acrobat

Keep Your Password Safe: If you forget the permissions password, you will not be able to modify the security settings or edit the PDF in the future. Be sure to store it in a secure password manager.

Password Protect PDFs Easily with WPS Office

WPS Office provides an intuitive and powerful PDF toolkit. You can quickly encrypt your PDFs and restrict editing, printing, or copying with a permissions password, ensuring your document's security without navigating complex menus.

1. Open the PDF: Launch WPS Office and open the PDF file you wish to protect.
2. Navigate to the Protect Tab: Click on the 'Protect' tab located on the top navigation ribbon, then click the 'Encrypt' button.
3. Set Editing Restrictions: In the encryption menu, check the box for 'Set password for editing and extracting'.
4. Apply and Save: Enter your desired permissions password, confirm it, click 'Confirm', and save your document to finalize the protection.

Set distinct passwords for opening and editing PDFs to maintain strict document security.Highly compatible with standard Adobe PDF formats and encryption protocols.Lightweight, fast, and packed with comprehensive PDF editing and conversion features.

Frequently Asked Questions

What is the difference between a Document Open password and a Permissions password?

A Document Open password prevents users from opening and viewing the PDF entirely. A Permissions password (sometimes called a Master password) allows anyone to open and read the file, but requires the password to edit, print, or copy the content.

Can I remove the editing password from a PDF later?

Yes, as long as you know the current permissions password. You can open the PDF in your PDF editor, navigate to the security or protection settings, and choose to remove security. You will be prompted to enter the password to confirm the removal.

Does password protection also prevent users from copying text?

It can. When setting up the Permissions password in Acrobat or WPS Office, you have the option to uncheck 'Enable copying of text, images, and other content'. This will prevent users from copying data out of the protected PDF.

Why is the 'Encrypt with Password' option greyed out?

This usually happens if the document is digitally signed, certified, or already protected by an organizational policy. You cannot change the security settings of a PDF that has been certified by another user without their permission.

PDF Troubleshooting