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Protect PDF

Add a password to a PDF (AES-256 encryption).

  • Free
  • No sign-up
  • Works on any device

Choose file or drag it here

    About Protect PDF

    Add a password to a PDF so only people who know it can open the file. Use it for CVs, contracts, bank statements and anything private you send by email. Keep the password somewhere safe: a lost password cannot be recovered.

    How to use Protect PDF

    1. Choose your files, or drag and drop them onto this page.
    2. Choose the options you want. The defaults suit most files.
    3. Press Convert, then download the result.

    Why use this tool?

    Also known as

    Frequently asked questions

    How strong is the PDF password protection?

    The file is encrypted with AES, so a long, unique password is very hard to break. Short or common passwords can still be guessed.

    Can I also stop people from printing or copying?

    Opening is protected by the password. Restrictions on printing and copying are only respected by some programs, so do not rely on them for secrets.

    Is Protect PDF free?

    Yes. Protect PDF on Toolipedia is free to use, with no sign-up and no watermark.

    Is it safe to use?

    Yes. Your files travel over an encrypted connection, are processed automatically, and are deleted as soon as the result is ready. Nobody looks at them.

    Does it work on my phone?

    Yes. It works in any modern browser on Android and iPhone, as well as on tablets and computers. There's nothing to install.

    How big can my files be?

    Up to 200 MB in total. You can add several files at once.

    Do I need an account?

    No. Just open the page and use the tool. There's no sign-up and no email needed.

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