PDF Suite Security
Password Protect PDF
Secure your sensitive PDF files with user passwords. Prevent unauthorized opening, copying, or printing directly inside your browser.
Upload PDF to Password Protect
100% In-Browser Encryption. Your password is never sent over any network.
100% In-Browser Privacy Guarantee
Your files never touch any external server
Unlike other online converters that upload your confidential PDFs, images, and videos to remote cloud servers, NovaTools executes all transcoding, manipulation, and rendering strictly in your browser memory via WebAssembly and HTML5 APIs.
Zero Network Uploads
Hardware Accelerated
How to use Password Protect PDF
1
Select PDF
Pick the PDF document you wish to encrypt.
2
Set Password
Enter and confirm a strong access password.
3
Lock & Download
Export the password-protected document.
Key Feature Highlights
- Standard PDF encryption compatible with all PDF readers (Adobe Acrobat, Apple Preview, browsers)
- Zero transmission of passwords or files over the internet
- Instant client-side key generation
Frequently Asked Questions
Can NovaTools recover my password if I forget it?
No. Because all encryption happens locally on your computer, no passwords or keys are ever stored on any server.