I Built a Privacy-First Chrome Extension That Saves Your Forms Locally

You're 800 words deep into a job application. Tab crashes. Refresh. Gone.

We've all been there. Most "form saver" extensions phone home to some SaaS with a freemium tier and a privacy policy nobody reads. I wanted the opposite: something that runs entirely on my machine, never makes a network request, and just works.

So I built FormVault — an open-source Chrome extension that auto-saves form data to local storage, with a one-click restore toast when you come back to the page.

GitHub: https://github.com/TiltedLunar123/FormVault

What it does

Auto-saves any form field you type into, debounced 3 seconds after your last keystroke

Pops a non-intrusive toast when you revisit a page with saved data

Skips passwords, credit card fields, SSNs — never saved, period

Banking sites blocked by default, with a user-configurable domain blocklist

All UI injected via Shadow DOM so it never collides with host page styles

100% local storage.…