We are handing over the sealed commercial terms and I need to lock the final contract set so only authorised staff can…
Open the PDF file you want to restrict in Adobe Acrobat Pro.
Select File from the top menu, then choose Properties.
In the Document Properties window, click the Security tab.
From the Security Method dropdown, select Password Security.
In the Password Security Settings dialog, check the option to restrict editing and printing of the document.
Set a permissions password when prompted.
CautionIf you forget this password, you cannot change or remove the restrictions later.
Choose the specific restrictions you want to apply (e.g., disallow printing, disallow editing, disallow copying).
Click OK to confirm your settings and close the dialog.
Click OK again in the Document Properties window.
Save the PDF to apply the new permissions.
Best practiceTest your restricted PDF in a different PDF reader or with a different user account to confirm the permissions are enforced.
You can review or change these restrictions later by reopening the Document Properties and returning to the Security tab.
This runs in the Acrobat app - there is no separate API for this task.
The owner password is a special password you set when you restrict a PDF. It is the only way to change the security settings later. Without it, the restrictions you put in place cannot be removed or changed by anyone, including you.
Using 'Restrict Permissions' gives you fine control over what users can do with your contract, even if they can open it. A regular password only stops people from opening the file. Restrict Permissions lets you choose if they can print, edit, or copy content. This is important for final contracts where you want to ensure no changes are made and sensitive information stays secure, even after the document is viewed.
Yes, if you have the owner password, you can remove the restrictions. Open the PDF in Acrobat, go to the 'Protect' tool, and choose 'Remove Protection'. You will need to enter the owner password to confirm this action. Once removed, anyone can print, edit, or copy the document.