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Secure

Protect a PDF

Put a password on your PDF. Without that password, it won’t open.

Your file stays on your device

  1. File
  2. Options
  3. Result

How it works

Protect in three steps

  1. Choose your PDF

    The file you want to protect.

  2. Choose a password

    Twice, so a typo doesn’t lock you out. Choose what’s allowed once it’s open.

  3. Download

    Your PDF is encrypted with AES-256. Share the password separately, not in the same email.

Good to know

  1. How strong is the protection?

    Plooi encrypts with AES-256, the PDF 2.0 standard. How strong it is depends mostly on your password: choose a long sentence rather than a short word.

  2. What if I forget the password?

    Then nobody can open the PDF any more, not even Plooi. Keep your password safe, or keep the original without a password.

  3. Can anyone see my password?

    No. Your password and your PDF stay in your browser. Nothing goes to a server.

Spotted a mistake?

A few words are enough. We will check and fix it.

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Reading aids

Make the site easier to read. Your choice is saved on this device.

Text size

Prefer your device’s own settings (zoom, screen reader, dark mode)? They work here too.