Protect PDF

Add password protection and security restrictions to PDF documents. Control access, editing, copying, and printing permissions.

Select the PDF file you want to add protection to

Required to open and view the PDF

Required to modify permissions and content

Higher encryption provides better security but may reduce compatibility with older PDF viewers

Security Recommendations

Use strong, unique passwords and remember them securely. The owner password provides full control, while the user password only controls access to view the document.

Understanding PDF Protection
Two-Level Security: User passwords control document access, while owner passwords control modification permissions. You can set one or both.
Permission Control: Fine-tune what users can do with your PDF: printing, copying text, editing content, adding annotations, or filling forms.
Encryption Levels: Higher encryption (256-bit AES) provides maximum security, while lower levels (40-bit RC4) offer better compatibility with older software.
Common Use Cases: Protect confidential documents, prevent unauthorized copying, create read-only versions, or secure forms before distribution.