Protect PDF Online – Add a Password to PDF Free

PDF TOOL

Protect your PDF with a password securely, processed locally in your browser.

Drop your PDF here

or click to browse your device

PDF only • Processed locally • No upload required

Set a password

Choose a password required to open your PDF.

Password

Enter a password

Confirm password

Your PDF is processed in your browser. Your password is not saved by this tool.

PDF PROTECTION

Protect PDF Online

Protect your PDF with a password to help prevent unauthorized access. Enter a password, confirm it, and create a password-protected PDF directly from your browser.

FEATURES

A simple way to protect your PDF

Add password protection to your PDF in just a few steps.

↑

Easy PDF Upload

Select a PDF from your device or drag and drop it directly into the tool.

🔒

Password Protection

Encrypt your PDF with a password that readers must enter to open the protected document.

✓

Password Confirmation

Enter your password twice to help prevent mistakes before protecting your PDF.

◉

Password Strength

Check the displayed password-strength indicator and choose a stronger password for your document.

⇩

Download Protected PDF

Download your password-protected document when the encryption process finishes.

◎

Browser-Based Tool

The tool is designed to process your PDF in your browser without requiring a server upload.

🔒

DOCUMENT SECURITY

Protect Your PDF with a Password

Password encryption helps restrict access to your document. Choose a strong password and keep it somewhere safe, because you may not be able to open the PDF if you lose it.

FAQ

Frequently Asked Questions

Quick answers about protecting PDF documents with a password.

How do I protect a PDF with a password?

Select your PDF, enter a password, confirm it, and click Protect PDF. Download the resulting document and verify that it requests the password when opened.

Can I protect a PDF for free?

This tool is designed to provide PDF password protection without requiring a paid subscription.

What makes a strong PDF password?

Use a long, unique password that combines different character types. Avoid easily guessed words and personal information.

What happens if I forget my password?

You may be unable to open your protected PDF. Keep your password in a secure place before encrypting the document.

Does password protection prevent editing or printing?

This tool’s current interface is designed for password protection when opening a PDF. It does not provide separate controls for restricting printing, copying, or editing.

Do I need to install software?

The tool is designed to run in your web browser, so you do not need a separate desktop application.