securityClient-Side Secure
Encrypt PDF
Protect your PDF with password encryption. Simple and secure AES encryption with user and owner permissions. Free online PDF encryptor.
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How to use
- Upload the PDF you want to protect.
- Set a password and, if needed, owner permissions (printing, copying, editing).
- Apply AES encryption to the document in your browser.
- Download the password-protected PDF.
Common use cases
- Securing contracts, statements, or medical records before emailing them.
- Restricting printing or copying on a shared document.
- Adding a password to sensitive files stored in the cloud.
Frequently asked questions
- Is my PDF or password sent to a server?
- No — encryption runs entirely in your browser, so neither the file nor the password leaves your device.
- What encryption is used?
- Standard PDF AES encryption with optional user and owner permissions.
- Can I set permissions separately from the open password?
- Yes, you can control printing, copying and editing via owner permissions.