We need to define who can view, edit, and send our release assets so no one accidentally distributes preliminary proof…
Open the PDF file you want to restrict in Adobe Acrobat.
Select Tools from the main menu.
Choose Protect from the list of available tools.
Click Restrict Editing under the Permissions section.
When prompted, set a permissions password to prevent others from changing these restrictions.
In the permissions dialog, uncheck options for printing, editing, and copying as desired to make the PDF read-only.
Click OK to apply the restrictions.
Save the PDF file to ensure the new permissions are in effect.
Best practiceIf you want to prevent users from removing these restrictions, choose a strong, unique permissions password and do not share it.
After applying restrictions, test the PDF by reopening it to confirm that editing and printing are disabled.
This runs in the Acrobat app - there is no separate API for this task.
An owner password is very important because it is the only way to change the restrictions you set. Without it, your PDF will stay locked with the current permissions forever. This means you cannot update or remove the security settings later, even if you are the creator of the document. Always set a strong owner password and keep it safe.
If you restrict a PDF's permissions, former contractors will only be able to do what the permissions allow. For example, if you set 'Changes Allowed' to 'None', they cannot edit it. If you restrict printing, they cannot print it. This helps control access even after someone leaves your team. However, if they have the owner password, they can remove the restrictions, so it's vital to change passwords when people leave.
Yes, you can automate the removal of PDF protection using an API. Adobe offers a 'Remove Protection' operation through its PDF Services API. To do this, you need to send a POST request to the specified endpoint. It is crucial to include the owner password in the request body. This ensures that only authorized users can remove the security settings from the document.