Security properties

Specify and change security properties for an open PDF document, set passwords needed for opening it or for specifying permitted or prohibited actions on it, and/or use certificate schemes to encrypt it.

Do one of the following to display the Security page in the Document Properties dialog box:

• Click the Manage Security () tool on the Security tab of the ribbon, then select Modify or Remove in the drop-down list.

• Select File > Properties on the menu, then select the Security tab.

View the "Summary of Permitted Actions" currently set for the document and select a security method.

• No Security: By default, all actions are allowed. Select to remove all security properties from a previously secured document, if you have the rights to do so.

• Password Security: Select to display the Password Security dialog box. See password security Password security overview for details.

• Certificate Security: Select to display the Certificate Security Settings wizard. See Certificate Security for details.

You must save Security Properties modifications and the document for the new settings to take effect. Click "Details" to view changed settings. Click "Settings" to make more changes.