Perrmission security settings in  PDF

The usage permission settings let you restrict what features can be used when a recipient opens a file you have secured. This means, for example, that you can distribute documents that can't be edited or printed, but can be opened and viewed. Using these permission settings with digital ID certificate-based security gives you even greater flexibility as you can set different permissions for each individual recipient of your file.

The usage permissions you can control include:

• Printing. Control the users ability to print the document, and at what resolution quality.
• Modify document. Control the users ability to edit the contents of a document.
• Content copying or extraction. Control the users ability to copy content from a document.
• Content accessibility enabled. Control the users ability to use accessibility tools to access PDF documents.
• Commenting. Control the users ability to add notes, text highlights, and drawing markups.
• Form field fill-in or signing. Control the users ability to fill in forms and digitally sign documents.
• Document assembly. Control the users ability to insert pages into and extract pages out of PDF documents.
• Access for screen readers. Allow text to be accessed by screen-reading software for users with a visual impairment.