Protect PDF with Password
Encrypt your PDF file with a password to prevent unauthorized access.
How To Use
- Upload PDF — Select the document to protect.
- Set Password — Enter and confirm your password.
- Download — Get your password-protected PDF.
How to Password Protect a PDF
Password protecting a PDF is essential when sharing sensitive documents like contracts, financial reports, legal documents, or personal information. This tool encrypts your PDF with a password using industry-standard encryption. The recipient must enter the password to view the document.
The encryption is applied using pdf-lib's built-in security features. Choose a strong password that combines uppercase and lowercase letters, numbers, and symbols. Avoid using easily guessable passwords like names or dates. Remember that if you lose the password, there is no way to recover access to the encrypted PDF.
All processing happens locally in your browser. Your document and password never leave your device. No file size limits, no uploads, no registration. This is the most private way to secure your PDF documents.