I Hack PDF
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Protect PDF

Encrypt your PDF with AES-256 and a password.

Read the guide ↓

What this tool does

Encrypt a PDF with a password required to open the document. Apply protection on your device when a shared copy should require a password rather than being directly readable by anyone who receives it.

What you can open
One PDF and an opening password, with an optional owner password.
What you will download
One password-protected PDF encrypted locally.

How to use it

  1. Choose a password and keep it in a safe place.
  2. Add the document and run protection on your device.
  3. Open the result in a PDF reader to verify the password requirement.

Options explained

Open password
Enter the password needed by this operation. Keep it safe; the application processes it locally.
Owner password (optional)
Optionally set a separate owner password where supported by the encryption operation.

Know the tradeoffs

  • Losing the required password can make the protected file inaccessible.
  • An opening password does not control what an authorized recipient does after opening the document.

Questions about this tool

Is the password uploaded with my document?

No. Encryption is performed in the browser by the application.

Can this stop an authorized reader sharing a copy?

No. A password controls opening access, not every later action by someone who can open the file.