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Protect PDF

100% Client-Side

Protect PDF encrypts your PDF files using advanced standard security controls. By entering a password, the engine locks your document, restricting unauthorized users from viewing, printing, extracting pages, or editing content without authorization.

Open Protect PDF

How It Works

1

Select PDF

Choose the PDF file you wish to secure with password encryption.

2

Enter Password

Type your secure password and verify it to avoid errors.

3

Encrypt & Save

Click Protect PDF to encrypt the document layout in-memory and download the file.

Frequently Asked Questions

What encryption standard is used?

The tool utilizes pdf-lib's built-in encryption algorithm, which complies with standard PDF permissions.

What happens if I forget the password?

We do not save your passwords on any server. If you forget your password, the file cannot be recovered.

Can standard PDF readers open the locked file?

Yes. Standard PDF readers (like Adobe Acrobat or Chrome) will prompt for the password when opening the file.