Protect PDF File

Encrypt your document with a password to prevent unauthorized access.

Select PDF File

Drag & Drop supported (Only PDF files)

Protect PDF Files with Passwords Online Free

Are you sending a confidential document, a financial bank statement, or a private legal contract via email? Protect it from prying eyes! HB Tools PDF Protector by Haridash allows you to lock your PDF files with a secure password instantly and for free.

How does PDF Encryption Work?

When you set a password using our tool, it doesn't just add a visual lock screen to the file. It applies an Advanced 128-bit RC4 Encryption Algorithm to the internal data of the PDF. This means the text and images inside the file are mathematically scrambled. Without the correct password, neither a human nor a computer can read the contents.

Important Warning About Passwords

Do not forget your password!

Because our encryption is highly secure, there is absolutely no way to recover or bypass the password if you forget it. We do not save your passwords on our servers. Please write it down or use a password manager.

100% Private (No Cloud Uploads)

Your privacy is crucial when dealing with confidential documents. Unlike other websites that upload your sensitive files to their cloud servers, HB Tools processes the entire encryption locally inside your own web browser using the PDF-Lib engine. Your documents and passwords are never sent over the internet, ensuring military-grade security.