LumenAI for Gemini by Christian Smmc

Lumen brings Google Gemini AI directly into your browser. Select text or use the toolbar popup to instantly summarize pages, explain content, or ask questions about what you're reading.

Features

Summarize any webpage with one click
Explain selected text via right-click menu
Ask questions with optional page context
Streaming responses — see answers as they generate
Shows model, token count, and estimated cost per request
Requirements
A Google Gemini API key is required (free tier available at Google AI Studio). Your key is stored locally in your browser — never sent anywhere except directly to the Gemini API.

Privacy
No data is collected by this extension. Page content and questions are sent directly from your browser to Google's Gemini API using your own key.