Local Browser AI Agent in a Chrome Extension with Gemma4 & WebGPU
Nico Martin built a fully local AI agent that runs in the browser using Gemma4, WebGPU, and Transformers.js to search history, summarize pages, and manage tabs.
Nico Martin built an AI agent that runs right in the browser
Everything is local, no servers, based on Gemma4 and WebGPU
It uses native tool calling to:
- search browser history
- read and summarize pages
- manage tabs
But the most interesting part isn’t that it works, it’s how the Transformers.js architecture is built inside a Chrome extension to make it work at all. Read about it .
, Chrome extension
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