Overtab: An On-device AI browsing assistant powered by Gemini Nano (no cloud, no data sent out)!

Hey everyone 👋

I’ve been obsessed with making browsing smarter, so I built what I wished existed: Overtab, an on-device AI Chrome assistant I created for the Google Chrome Built-in AI Challenge 2025 that gives instant insights right in your browser.

Highlight text, ask by voice, or right-click images: all processed locally with Gemini Nano!

(And if you don’t have Nano set up yet, there’s an OpenAI fallback!)

🎬 Demo Video | 🌐 Chrome Web Store | 💻 GitHub