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Restrict PDF editing

Last updated on Sep 23, 2025

Learn how to prevent changes to your PDF documents using password security in Adobe Acrobat.

Select All tools > Protect a PDF.

In the left pane, select Protect with password.

In the dialog box that opens, select Editing.

Type and retype your password in the password fields.

The Protect Using Password dialog box shows the Editing option selected and a password entered.
The password strength indicator shows if your password is weak medium or strong.

Select Apply.

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