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Easily work offline with our all-in-one PDF editor for desktop. Try 15 days risk-free.

Password Protect PDFs for Free Online

Easily secure important PDFs with a password directly in your browser. Keep your private files private!

Upload file

Offline

Rather work offline?

However, in the event of an error, we may temporarily keep a file to aid us in identifying and resolving the issue. The file will be deleted afterwards.

We do not store the files once the user's session expires

No Installation or Sign-up required

No downloading software, no signing up necessary. Just visit this webpage from your browser, and get started!

Why Password Protect a PDF?

Keep your private files private! Prevent unwanted viewing, opening, and editing of your PDF documents.

Safe & Secure — Your Privacy Matters to Us

Uploaded files are deleted after 24 hours.

What PDFs Can I Protect?

Add a password to any PDF document that you want to make more secure with this free, online tool.

100% Free

Our PDF password tool is 100% free to use.

Works on Any Device

Instantly add a password to your PDF in your browser, on any device! Windows, Mac, Chrome, Linux — you name it!

How it Works

How to Password Protect a PDF for Free

Upload a PDF that you want to protect with a password

Upload the PDF you want to protect with a password using the upload button, or drag and drop the file into window.

Set and confirm a password

Select a strong password, then repeat the password to confirm it.

Download!

Download your newly protected PDF file.

Related Guides

Here are some related guides to help you keep working on your PDF.

Support

Frequently Asked Questions

Could not find what you were looking for?
Write us at support@pdfpro.com

What is the Password Protect PDF tool used for?

Use PDF Pro's Password tool anytime you want to secure important documents and prevent unwanted viewing or changing of a PDF.

What functions does the Password Protect PDF tool have?

Can you Password Protect PDFs for free?

How do I password protect a PDF for free?

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PDF Pro is a desktop software for Windows & Mac distributed by PDF Pro Software Inc. The software "PDF Pro" and the company "PDF Pro Software Inc." are in no way affiliated with Adobe. The PDF file format is an open file format published under ISO 32000-1:2008