Password Protect PDF
Add AES-128 password encryption to your PDF before sharing sensitive documents. Processed entirely in your browser — your file is never uploaded to any server.
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Frequently Asked Questions
How to use Password Protect PDF
- 1
Select your file
Open Password Protect PDF and add your file — drag and drop it or click to browse. Your file is processed locally in your browser and is never uploaded to any server.
- 2
Process
Add RC4-128 password encryption to your PDF. Processed entirely in your browser — never uploaded.
- 3
Download the result
Preview the output and download it instantly — 100% free, no watermark and no sign-up required.