How to Password-Protect a PDF File in Adobe Acrobat

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It is very easy to password-protect a PDF file in Adobe Acrobat. Here’s a quick guide on how to do it:

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1. Head over to the top menu bar and then click 'All Tools'.
2. Select 'Protect a PDF' from the list of options.
3. Tap 'Protect with Password' afterwards to proceed.
4. Specify your preferred password requirement and then enter the password into the provided input field.
5. Once done, tap 'Apply' to proceed.
6. After completing these steps, your PDF file will be encrypted with a password.