Password Protect PDF Online - Secure PDF Files

Password protect PDF online for free. Secure PDF files with encryption. Restrict printing and editing permissions.

Drop PDF file here or click to browse

.pdf, application/pdf • Max 50MB

What This Tool Does

Adds user password to prevent unauthorized opening
Sets owner password to restrict editing and printing
Configures granular permissions (print, copy, modify)
Offers 128-bit and 256-bit AES encryption
Displays real-time password strength indicators

How to Use

1
Upload PDF file
Select the document you want to protect
2
Set passwords
Choose user password for opening and owner password for permissions
3
Configure permissions
Select allowed actions (printing, copying, editing)
4
Download protected PDF
Save the password-secured document

How it works

Upload PDF file

Select the document you want to protect

Set passwords

Choose user password for opening and owner password for permissions

Configure permissions

Select allowed actions (printing, copying, editing)

Download protected PDF

Save the password-secured document

Use Cases

Securing confidential business contracts and agreements
Protecting intellectual property and proprietary documents
Preventing unauthorized editing of finalized reports
Restricting printing and copying of sensitive materials
Controlling access to personal financial documents

Frequently Asked Questions

What is the difference between open password and permissions password?

An open password (user password) controls who can view the PDF. A permissions password (owner password) controls editing, printing, copying, and annotation rights without requiring a password to open.

Can I allow printing but prevent copying text from my PDF?

Yes, you can set granular permissions like allowing printing while restricting text copying, editing, page extraction, or form filling independently.

How strong does my PDF password need to be for security?

Use at least 12 characters with uppercase, lowercase, numbers, and symbols. Longer, complex passwords with 16+ characters provide the strongest protection against brute-force attacks.

Can others remove the password if they have the PDF file?

Without the correct owner password, removing protection requires password recovery tools which can take days or years depending on password strength and encryption level (128-bit or 256-bit).

Back to Tools