PDF Studio allows the user to set or change passwords and permissions on PDF documents. Two passwords may be set for a document: an open password and a permissions password. If set, the open password must be entered to open the document. The permissions password prevents users from modifying the document's permissions. The document's permissions can be configured to restrict the ways a document may be modified and accessed.
Secured documents will have (SECURED) after the file name in the title bar of PDF Studio.

View Security Settings – View passwords and permissions for the current PDF document
Change Security Settings – Update passwords and permissions for the current PDF
Set Security on a Batch – Apply the same security settings to multiple files in a single action
To view current security settings, click on Document > Security from the top toolbar. The application will open the Document Security Settings dialog, where you can view current security settings for the document.

Passwords
Password to Open Document – This is also known as the user password. It is the password that is required to open the document.
Password to Change Permissions – This is also known as the permissions password or owner password. It is the password that is required when trying to change permissions and passwords on the document.
Permissions – Specific permissions for the document:
Printing High Definition – Permission to print the document at high resolution. When this permission is granted, the following permission Printing is automatically granted.
Printing – Permission to print the document.
Text & Graphics Extraction – Permission to copy or extract text and graphics from this document. When this permission is granted, the following permission Extraction for Accessibility is automatically granted.
Extraction for Accessibility – Permission to extract text or graphics from this document in support of accessibility to the disabled or other purposes.
Change document – Permission to make changes to this document, for instance by creating form fields.
When this permission is granted, the following 3 permissions (Document Assembly, Comments, and Form Filling) are also automatically granted.
When this permission is not granted, the following 3 permissions (Document Assembly, Comments, and Form Filling) can be granted independently.
Document Assembly – Permission to assemble the document: insert, rotate, or delete pages and create bookmarks or thumbnail images.
Annotations & Comments – Permission to Add or Modify text annotations.
If granted, Form Filling and Signing, is also automatically granted.
If not granted, Form Filling and Signing can be granted independently.
If granted and the Change Document permission is also granted, creating or modifying interactive form fields (including signature fields) is allowed.
Form Filling & Signing – Fill in existing interactive form fields including signature fields.
To change current security settings:
Click on Document > Security from the top toolbar.
The application will open the Document Security Settings dialog, where you can view current security settings for the document.
Click on the Edit button
The Change Document Security dialog will open
Choose the desired options in the dialog (see options below)
Save the document to save the new security settings

Passwords
Password to Open Document – This is also known as the user password. It is the password that is required to open the document.
Password to Change Permissions – This is also known as the permissions password or owner password. It is the password that is required when trying to change permissions and passwords on the document.
Permissions – Specific permissions for the document:
Printing High Definition – Permission to print the document at high resolution. When this permission is granted, the following permission Printing is automatically granted.
Printing – Permission to print the document.
Text & Graphics Extraction – Permission to copy or extract text and graphics from this document. When this permission is granted, the following permission Extraction for Accessibility is automatically granted.
Extraction for Accessibility – Permission to extract text or graphics from this document in support of accessibility to the disabled or other purposes.
Change document – Permission to make changes to this document, for instance by creating form fields.
When this permission is granted, the following 3 permissions (Document Assembly, Comments, and Form Filling) are also automatically granted.
When this permission is not granted, the following 3 permissions (Document Assembly, Comments, and Form Filling) can be granted independently.
Document Assembly – Permission to assemble the document: insert, rotate, or delete pages and create bookmarks or thumbnail images.
Annotations & Comments – Permission to Add or Modify text annotations.
If this permission is granted, the following permission, Form Filling and Signing, is also automatically granted.
If this permission is not granted, then the following permission, Form Filling and Signing, can be granted independently.
And if this permission is granted and the Change Document permission is also granted, creating or modifying interactive form fields (including signature fields) is allowed.
Form Filling & Signing – Fill in existing interactive form fields including signature fields.
To set security on a PDF document that is not opened in PDF Studio or to set security on multiple PDF documents in a single action, use the Set Security to a Batch function. See our documentation of Setting Security on a Batch in the Batch Process documentation page.