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Encrypt PDF files

Secure your PDFs effortlessly with our PDFTool. We process everything on your browser to keep you data private! Our website is free to use for everyone!


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Works without installation!

PDFTool lets you encrypt PDF files directly in your browser. You do not need to install a application or upload the files.

How does this work?

We encrypt your PDF files directly in the browser, this ensures privacy for your documents. PDF encryption in the browser is available for all systems like Windows, Mac and Linux as well as Android, iOs and iPad Devices.

Can I encrypt PDF files without internet?

Yes! Open PDFTool, select encrypt and deactivate your internet connection - the application works fully offline.

How to encrypt PDF files online?

  1. Add a document by pulling it into the drop area or by clicking on the area.
  2. After adding the file, you can enter the password.
  3. Enter the password one more time to make sure that it is correct.
  4. Save your new PDF by clicking the button below.


This PDF encryption tool allows you to securely encrypt PDF files without an internet-connection. You can turn off your Internet-Connection and still encrypt PDF files.

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