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Protect PDF

Add strong password encryption to protect your sensitive documents. 100% private and processed locally in your browser.

Drag & Drop a PDF here

or click to browse a file from your computer

Secure 128-bit encryption with custom access controls

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Browser extension

Keep RizCraft tools one click away

Open 24 built-in tools from your browser sidebar, use quick actions from the right-click menu, and reach every RizCraft tool without hunting through tabs.

Add to Chrome Explore the extension

Firefox and Edge versions are coming next. Free to install

Password Protect PDF Files Online Free

Safeguard confidential business reports, legal agreements, payroll receipts, and personal files from unauthorized access. Our free PDF protection tool applies industry-standard 128-bit encryption to lock your files with a secure password.

How to Password Protect a PDF

  1. Select your PDF: Drag and drop your file into the box above.
  2. Set a password: Enter your chosen password and confirm it.
  3. Configure permissions: Choose whether to allow printing, copying, or form modifications.
  4. Download encrypted PDF: Click Encrypt & Download to save your secure document.

Universal Compatibility

Protected PDFs work seamlessly in Adobe Acrobat Reader, Google Chrome, Mozilla Firefox, Apple Preview, Microsoft Edge, and all iOS / Android PDF viewers.

Frequently Asked Questions

What happens if I forget my password?
Because standard PDF encryption is mathematically robust, passwords cannot be recovered if lost. Be sure to save a copy of your password in a safe password manager.
Can people print the document without the password?
No. When user password protection is set, nobody can open, view, or print the document without first entering the password.