SensAI Explain This

This extension is an on-device AI mentor that helps you learn faster while browsing. Highlight any text whether it's code, a research article and SensAI explains, translates, simplifies it instantly

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Inspiration

When something on a webpage is confusing, we usually:

  • Copy and paste text into ChatGPT or Google
  • Open new tabs to search explanations
  • Get distracted and lose focus

This slows down learning and kills curiosity — especially for self-taught developers and students.

✅ Solution — SensAI Chrome

SensAI - Explain This, is an extension built to eliminates the friction of learning online by placing a context-aware AI mentor directly inside your browser.
Whether you’re coding, researching, studying, or just curious SensAI helps you understand in the moment without breaking your flow.

What it does

Just select text → right-click → “Explain with SensAI”

SensAI opens a clean, distraction-free learning interface powered by Gemini Nano on-device AI, offering:

Mode What It Does
Explain Breaks down complex text into simple language
Summarize Turns long content into clear key points
Translate Instantly converts text using Gemini Translator API
Explain Code Explains code like a senior mentor teaching a beginner
Simplify Rewrites technical text in beginner-friendly terms

How we built it

Powered by Google Chrome AI (On-Device)

  • 🔐 Private — Data never leaves your machine
  • ⚡ Fast — Runs locally, no network calls
  • ♾️ Free — No API keys, no server costs, no rate limits

Technologies used:

  • Gemini Nano — Prompt API
  • Gemini Nano — Translator API
  • Chrome Extension (Manifest V3)
  • React

- TailwindCSS

Challenges we ran into

Challenge Description How We Solved It
Started the Hackathon 1 Day Before Deadline I discovered the hackathon extremely late, leaving almost no time for planning, iteration, or multiple design cycles. Focused strictly on core functionality over features and optimized for clarity and usefulness.
New & Evolving Prompt API The Gemini Nano Prompt API is very new, and the documentation was still in an early, incomplete stage. Many expected examples simply did not exist yet. I learned usage patterns by experimenting directly in the browser console and studying low-level platform behavior.
Very Small Community Because the technology is brand new, there were no tutorials, minimal GitHub examples, and almost no StackOverflow discussions. I solved issues through systematic experimentation and careful debugging.
Chrome Popup UI Too Small The popup window didn’t allow for comfortable reading or interaction. I redesigned the interface to open as a full browser tab, improving usability dramatically.

🌱 What we learned

  • Being early in a technology space means becoming your own guide.
  • Constraints breed creativity especially under time pressure.
  • On-device AI is powerful, fast, and has the potential to redefine how we learn online.

- You don’t need perfect clarity to start starting creates clarity.

🌍What's next for SensAI Chrome

  • Voice explanation mode
  • “Explain Inline” tooltips directly in webpages
  • Auto-generate flashcards from explanations
  • Personalized learning memory + spaced repetition

- Support for math, equations, & diagrams

💛 Team

Solo Developer: Leonel Nguefack Software Engineer LinkedIn

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