Password Security

To restrict access and use of your content, you can secure your PDF file with one of the following types of password:

  • Open passwords: Lock your file so only people with the correct password can open it
  • Permission passwords: Lock particular functionality when a user opens your file. For example, you could stop recipients from copying text from your PDF document or printing it

To Enable Password Security:

    1. On the Protect tab, in the Secure Document group, click Password Security
    2. In the Password Security dialog, do any of the following:
      • If you want users to enter a password in order to open the file, check the Require a password to the document checkbox, and enter a password
      • If you want to restrict permissions once a file is opened, check the Require a password to change security settings and access specific functions checkbox, and enter a password. Specify restrictions for printing, changes, copying text and images, and text access for screen reader devices

3. Click More. In the Security Level section, you can specify an encryption Algorithm.

NOTE: 256-bit AES is considered the most secure and is the default by Nitro Pro.

4. Click Finish

5. Save your PDF document to apply the new security settings

Can Nitro Pro allow someone to change or a remove password from a protected or restricted documents?

Yes. You can remove or change document security settings with Nitro Pro as long as you have the relevant password associated to the encrypted document. In Document Properties, click “Change Settings” and enter the password.”

What happens if you forget the password?

If you forget the password that you set on a PDF file, there is no way of recovering it – so make sure you write it down and keep it in a safe place!

Additional resources:

Want to know more? Check out this training guide for further information.

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Password Security