Lumen for Gemini by Christian Smmc

AI assistant in your browser, no subscription. Summarize pages, explain selections and ask questions using your own Gemini API key — you control the cost.

Some features may require payment

Available on Firefox for Android™

0 (0 reviews)

No Users

Download Firefox and get the extension

Download file

Scan the QR code to open this extension in Firefox for Android

About this extension

Lumen brings Google Gemini straight into your browser. Select some text or use the popup to summarize pages, explain content, or ask questions about what you're reading — with streaming answers and fully transparent cost.

Features

Summarize any page with one click
Explain or ask about selected text from the context menu
Ask questions with optional page context, plus a "search beyond context" toggle to let the model use its own knowledge
Streaming responses rendered as Markdown
History of your recent queries, reopenable with one click
Track tokens and estimated cost per query and by day / 7 days / month
Interface in English and Portuguese, with a configurable answer language

Requirements

A Gemini API key is required (free tier available at Google AI Studio). The key is stored locally in your browser — never sent to any server other than the Gemini API.

Privacy

No data is collected. Page content is read on demand (no script running in the background) and sent directly from your browser to the Gemini API, using your own key. Stats and history stay only in your browser.

Rated 0 by 0 reviewers

Data collection: