Lumina - AI Copilot for the web
Extension Actions
- Live on Store
Explain anything on your screen - Slides, Papers, News, Articles - using ChatGPT, Gemini and Claude.
Lumina gives you an AI "Second Brain" right in your browser.
Instantly analyze the content of any tab—whether it’s a YouTube lecture, a PDF slide deck, or a complex documentation page. Lumina sees what you see and explains it in seconds.
✨ Free Forever Features (No Subscription Needed)
Google Gemini Integration: Use the blazing fast Gemini Flash model for free (Bring Your Own Key).
Visual Analysis: "Snap" a screenshot of your tab and ask questions about charts, diagrams, or UI.
Page Context: Automatically reads the text of the page for context-aware answers.
Clean Interface: A beautiful, distraction-free side panel that fits your workflow.
🔓 Advanced Models (Bring Your Own Key)
Unlock the world's smartest models with your own API keys:
Premium Models: Switch instantly between OpenAI GPT-4o and Anthropic Claude 3.5 Sonnet.
Unlimited History: Automatically save your best prompts and explanations to review later.
Voice Input: Speak your queries naturally.
Smart Context: Auto-scrapes page text for perfect answers every time.
🔒 Privacy First
Start Free: Use your own API key for Gemini. Pay only for what you use, directly to Google (often free for low usage).
Your Data Stays Yours: We do not store your data or API keys on our servers. Everything is stored locally in your browser.
⚡ Perfect For...
Students: Snapshot lecture slides and get instant summaries.
Developers: Debug code snippets or get explanations for complex docs.
Researchers: Switch between Claude (best for writing) and GPT-4o (best for reasoning) in one click.
Note: This extension utilizes your own API keys. A Lumina Pro License is required to unlock the interface for OpenAI, Anthropic, and DeepSeek providers.
Latest reviews
- Nishant Kumar
- excellent extension , i have been using it from last week and it helps a lot
- Girish Rawat
- Doubled my productivity with easy searching. I don't have to switch tabs when I'm looking for information anymore.