PDF Password Protector Pro: The easiest way to secure your PDF To secure your PDF documents from unauthorized access like copying or printing, you should password protect your file! Protect PDF files by adding a password and encrypt it. PDF Password Protector is free and easy tool to secure pdf with add password. you can make protect pdf file in seconds. this app is offline no needs internet connection, leave protect pdf online service app that needs internet. Reliable PDF password protection: Encrypt your PDF with a password to prevent unauthorized access to the file content, especially for file sharing or archiving. A good length for a secure password: For a very secure password, we recommend using a non-dictionary word of 7 characters or more. Also include numeric characters, capital letters, and symbols. To protect pdf file just select pdf file, then enter owner and user password for example "owner123" and "user123" to protect pdf file and finally click on Add Password button