Free Protect PDF

Lock a PDF with a password using AES-256 encryption. Runs on your device, nothing is uploaded.

Protect PDF
Read the Protect PDF guide →

How to use Protect PDF

  1. 01Drop your PDFs onto the upload area, or paste from the clipboard.
  2. 02Adjust the options to suit what you need.
  3. 03Choose the output format under Save as.
  4. 04Click Protect and check the result.
  5. 05Download each file, or click Download all to get them as a zip.

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