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Protect PDF

Set and confirm a password to encrypt a PDF. Save the protected copy and test that a separate PDF reader requests the password.

Use a document you control. The workspace assigns the same entered password to both the user and owner password fields and applies a fixed set of permissions.

  • 100% free
  • No registration
  • On your device
  • Modern browser
  1. 1Choose files
  2. 2Choose options
  3. 3Download
Drag & drop your PDF file hereor click the button below to choose a fileSelect PDF file

or drag & drop files here

Upload a PDF to add password protection

Tip: You can also paste files directly (Ctrl+V / Cmd+V)

Files are processed on your device. See privacy details below for optional services.
Password encryption runs in your browser. Only protect PDFs you own or have permission to lock. Passwords are never stored.

Your input stays on this device for this operation. We don’t upload or store it.

About Protect PDF

Use a document you control. The workspace assigns the same entered password to both the user and owner password fields and applies a fixed set of permissions.

Matching password fields

Checks that the two entries agree.

Encrypted copy

Exports a new protected PDF.

How to use Protect PDF

  1. 1

    Upload the original

    Choose an unencrypted PDF

  2. 2

    Confirm the password

    Enter the same password in Password and Confirm password

  3. 3

    Encrypt and verify

    Press Encrypt & protect PDF, then test the copy

Formats and practical limits

PDF plus password → encrypted PDF

  • This tool does not offer separate owner and user passwords or an editable permissions policy.
  • A protected copy needs its password to open. Retain an accessible original and check the copy before distribution.

Practical example

Protect a draft statement and confirm a new reader prompts for the password before displaying pages.

Further reading

Frequently Asked Questions

1 answers
Can I set a different owner password?

The workspace uses one value for both passwords.

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