Protect PDF Online – Add Password to PDF

Our free PDF protection tool allows you to secure your PDF files by adding a password. This is ideal for confidential documents, contracts, or any file you want to restrict access to.

All processing happens locally in your browser. Your files remain private and secure. Nothing is uploaded to any server.

How to Protect a PDF

1. Click Upload PDF File to select your document.

2. Enter the password you want to use.

3. Click Protect PDF to apply password protection.

4. Download the protected PDF file.

Why Use This Tool?

Secure your PDF documents to prevent unauthorized access. All processing happens in your browser, ensuring your files and passwords remain private.