Lock PDF Online

Protect one PDF with a password using local AES-256 encryption and download the protected document.

Enable JavaScript to use the interactive controls. Your guide and examples are available below.

Features

About Lock PDF

Add AES-256 password protection to a PDF without uploading it.

How to use it

  1. Add your input using the Lock PDF controls.
  2. Choose the available settings and run the operation.
  3. Review the result, then use the available copy or export controls.

Processing and limitations

See the tool controls for processing details.

Keep your password safe; Pearto cannot recover it.

Questions and answers

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