Is PDF Password Protect completely free?

Yes, completely free with unlimited file processing and no registration required. No hidden fees or premium plans.

What is the difference between open password and permissions password?

Open password prevents anyone from viewing the PDF without entering it first. Permissions password protects against printing, copying, and editing while allowing the file to open without a password.

What is the maximum file size I can protect?

You can protect PDF files up to 100MB in size. Processing is instant for files under 50MB and typically completes within 5 seconds for larger files.

Does PDF Password Protect work on mobile devices?

Yes, works on iPhone, iPad, Android phones, tablets, and all desktop browsers. Use your device's file manager to select PDFs for upload.

Is my PDF file safe and secure?

Yes, completely safe. All encryption and processing happens locally in your browser. Files never upload to our servers and are never stored or accessed.

Can I add multiple passwords to one PDF?

Yes, you can set both an open password and a permissions password simultaneously for maximum protection of a single PDF file.

What PDF password encryption standard do you use?

We use AES-256 bit encryption, the military-grade standard that protects your PDF against unauthorized access and decryption attempts.

Can I remove a password from a protected PDF?

No, once password-protected, the PDF requires the password to open or modify. We recommend keeping your passwords secure. If lost, the PDF cannot be recovered.

Does PDF Password Protect work offline?

Yes, the tool works entirely offline after loading. You can disable internet and still protect PDFs. Processing happens on your device, not on remote servers.

256 bit

PDF Password Protect — 256 bit

Add password protection to PDF files to prevent unauthorized access. Set open and permissions passwords.

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Click or drag a PDF file here

PDF files only

How to use PDF Password Protect

Upload Your PDF File

Click the blue 'Choose File' button in the center of the page. Select your PDF from your computer. The file will appear in the upload area showing the filename and file size.

Set Your Password Protection

Enter an 'Open Password' (required) to prevent opening the PDF. Optionally enter a 'Permissions Password' in the second field to restrict printing, copying, and editing. Both fields accept alphanumeric characters and special symbols up to 32 characters.

Configure Permission Settings

Check boxes next to 'Disable Printing', 'Disable Copying', and 'Disable Editing' under the Permissions Password field. These restrictions only apply if you set a permissions password. Leave unchecked to allow unrestricted access after opening.

Process and Download Protected PDF

Click the green 'Protect PDF' button. Processing takes 2-5 seconds depending on file size. Click the 'Download' link that appears below to save your password-protected PDF to your device.

Frequently Asked Questions

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