Skip to content

Tools / Protect PDF

Protect PDF

Add password protection to PDF files. This tool is under research (Research Required).

🔒 Your files never leave your device. All processing happens locally in your browser.

This tool is under research

Protect PDF would add password encryption to your PDF files, ensuring only authorized users can open them.

Why isn't this available yet?pdf-lib, our current PDF engine, does not support PDF encryption. Implementing reliable PDF encryption requires a specialized engine that we haven't yet evaluated for bundle size, performance, and browser compatibility.

We're researching browser-compatible encryption engines that maintain our privacy commitment — your files never leave your device. This tool will be available once we find a suitable engine that meets our quality and privacy standards.

Research Required

Technical details: see ADR 0004 and the Batch B capability report in thedocs/ directory.