Protect PDF Tool

Add password protection and restrictions to your PDF files securely.

Protection Settings

Click or drag your PDF

User Password
Min 1 character
How It Works
1
Upload Your PDF

Select or drag your unprotected PDF file

2
Choose Protection Type

Select user password, owner password, or both

3
Set Passwords & Restrictions

Enter passwords and choose what to restrict

4
Download Protected PDF

Your secure PDF is ready to download

Protection Types Explained
User Password

Opens the PDF with a password. Recipients need the password to view the document. Recommended for sensitive information.

Owner Password

Controls restrictions like printing and copying. Users can view the PDF but cannot perform protected actions. Ideal for content protection.

Both Passwords

Maximum protection. Requires opening password and restricts actions. Best for highly sensitive documents.

Security Note: All processing happens in your browser. Your PDF and passwords never leave your device.
Features
No Registration
100% Secure
Fast Processing
No File Limit
Preserves Quality
Multiple Restrictions

Frequently Asked Questions

User Password: Prevents opening the PDF without the password. The recipient must know the password to view the document at all.

Owner Password: Doesn't prevent opening, but restricts actions like printing, copying text, and editing. Users can view the document but can't perform restricted actions.

Yes! All processing happens entirely in your browser. Your PDF file and passwords are never uploaded to our servers or stored anywhere. We use industry-standard PDF encryption (256-bit) to protect your documents.

You'll need to unlock the PDF first using our Unlock PDF tool, then protect it with new passwords. This allows you to update security settings or change passwords.

Since everything is processed locally in your browser, we cannot recover lost passwords. We recommend keeping your passwords in a secure location. If you forget, you'll need to use an unlock tool to remove the protection.

No! Adding password protection only encrypts the PDF and adds restriction metadata. The actual content, formatting, images, and quality of your PDF remain completely unchanged.

Currently, you can protect one PDF at a time. After protecting and downloading, you can click "Protect Another PDF" to process additional files with the same or different settings.

No file size limit! Since processing happens in your browser, you can protect PDFs of any size. The speed depends only on your computer's performance.

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Works Everywhere

Access our converter on any device, anytime, anywhere.