PDF Protect

Add password protection to PDF

PDF Protect - Password Protect PDF

Add password protection to your PDF files with real AES-256 encryption. All processing happens locally in your browser.

Upload PDF

Drop your PDF file here

Accepted: .pdf, application/pdf

Max size: 50MB

About this password protect PDF tool

Use this free online tool to add a password and permission settings to a PDF. It works directly in your browser on desktop and mobile, with no installation and no sign-up.

How to use it

  1. Open the tool and add your file or enter your input.
  2. Adjust the options you need.
  3. Run the tool and download or copy the result.

Frequently asked questions

Is this password protect PDF tool free?

Yes. Toolbox is free to use with no account, no watermark, and no hidden limits on the page.

Are my files uploaded to a server?

Toolbox is designed to process files locally in your browser, so your content is not sent to a server for processing.

What does protecting a PDF do?

It asks for a password before the file can be opened, helping keep sensitive documents private.

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