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Protect PDF — Add Password Encryption to Your PDF

Secure your PDF with a password to prevent unauthorized access. Set a password and encrypt your PDF instantly. Free, browser-based.

FreeNo SignupBrowser-BasedPrivacy First
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Drop your PDF here

or click to browse · Max 50MB

How to use Protect PDF — Add Password Encryption to Your PDF

  1. Upload your PDF
  2. Enter a strong password
  3. Click Protect PDF
  4. Download the encrypted file

Frequently Asked Questions

What encryption is used?
AES-256 bit encryption via the PDF specification.
Can I set a strong password?
Yes, use any combination of letters, numbers, and symbols.

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