When you share a confidential file with others, PDF Reader Pro helps you secure your PDFs by keeping others from copying or printing document content. Follow the steps to set permissions on your PDFs.
1. Tap Editor on the toolbar -> Security -> Set Password;
2. Tick Require a password to open the document and set your password;
3. Hit Restrict printing and copying of the document -> enter owner password -> click Encrypt to finish your security setting.
Note: Once you choose Restrict printing and copying of the document, the system will hit Restrict Document Printing and Restrict Content Copying automatically.