Encrypt PDF
Password-protect PDF files with 128-bit RC4 encryption
How to use Encrypt PDF
Add password protection to a PDF before sharing its exported copy.
- Choose the PDF to protect.
- Enter the password and supported protection settings.
- Encrypt, download and test the protected file with the password.
What to check before using the result
Keep the password securely. The app cannot recover a forgotten password for you.
Common questions
Where does Encrypt PDF process my document?
This tool processes your document in your browser. There is no document upload to the application server for this operation. Download the result to keep your own copy.
Can I use Encrypt PDF on my phone?
Open Encrypt PDF in a modern mobile browser and use the same document controls. Large files and image-heavy documents can take longer on a phone; a desktop browser is useful when you need more screen space.
Is a CreatePDF account required?
No CreatePDF account is needed. Core PDF operations do not add a watermark. Download any output you need to retain.