TabSummarizer 🗂️

Turn tab chaos into clear insights, instantly and offline.

A Chrome Extension that clusters and summarizes browser tabs using Chrome's built-in AI APIs (Gemini Nano + Summarizer/Prompt/Rewriter APIs). Perfect for researchers, students, and productivity enthusiasts who struggle with information overload from too many open tabs.

🚀 Features

• Smart Tab Summarization: Automatically summarize each tab into 2-3 sentences using Chrome's Summarizer API
• Improved Tab Titles: Rewrite confusing tab titles with clearer, more descriptive ones using the Rewriter API
• Natural Language Queries: Use multimodal queries like "show me all articles with charts/images about AI" with the Prompt API
• Advanced Tab Clustering: Group similar tabs using cosine similarity and TF-IDF vectorization for intelligent organization
• Export to Markdown: Save organized tab summaries to Markdown files for note-taking and research
• Offline-First: Runs entirely locally using Chrome's built-in AI - no server round-trips needed
• Real-Time Processing: Automatically processes tabs as you browse with intelligent caching
• Beautiful Interface: Modern, responsive design with smooth animations and accessibility features

🎯 Problem Solved

Too many open tabs = information overload. TabSummarizer solves this by:

• Reducing cognitive load through intelligent summarization
• Making tab titles meaningful and searchable
• Enabling natural language search across your browser tabs
• Working completely offline for privacy and speed

🛠️ Installation

1. Clone this repository
2. Open Chrome and navigate to chrome://extensions/
3. Enable "Developer mode"
4. Click "Load unpacked" and select the TabSummarizer directory
5. The extension icon will appear in your Chrome toolbar

🏗️ Architecture

Core Components

• manifest.json: Extension configuration and permissions
• background.js: Service worker for tab management
• content.js: Content script for page text extraction
• popup.html: Extension popup interface
• popup.js: Popup logic and AI API integration

Permissions Used

• tabs: Access tab titles and URLs
• scripting: Inject scripts for content extraction
• activeTab: Access current tab information

Built with

• JavaScript - Core programming language
• Chrome Extension APIs - Extension framework and tab management
• Chrome Built-in AI APIs - Local AI processing
  • Gemini Nano - AI model for text processing
  • Summarizer API - Text summarization
  • Rewriter API - Text rewriting and improvement
  • Prompt API - Natural language query processing
• HTML5 - Popup interface
• CSS3 - Styling and responsive design
• Manifest V3 - Extension configuration and permissions

🔧 Development

Prerequisites

• Chrome browser with built-in AI APIs support
• Basic knowledge of Chrome Extension development

Project Structure

TabSummarizer/
├── manifest.json          # Extension manifest
├── background.js          # Service worker
├── content.js            # Content script
├── popup.html            # Popup interface
├── popup.js              # Popup logic
└── README.md             # This file

API Usage

Summarizer API

const summary = await ai.summarizer.summarize(text, {
  type: "key-points",
  length: "short"
});

Rewriter API

const betterTitle = await ai.rewriter.rewrite(title, {
  tone: "clear",
  style: "concise"
});

Prompt API

const structured = await ai.prompt.generate({
  prompt: `From this list of tabs: ${JSON.stringify(tabs)}, 
           return only the ones matching: "${userQuery}"`,
  output: "json"
});

🚧 Development Roadmap

Phase 1: Core Functionality

• Basic extension setup
• Tab collection and display
• Summarizer API integration
• Basic UI implementation

Phase 2: Enhanced Features

• Rewriter API for better titles
• Improved popup interface
• Tab clustering functionality

Phase 3: Advanced Features

• Natural language queries with Prompt API
• Export summaries to Markdown
• Advanced filtering and search

Phase 4: Polish & Optimization

• UI/UX improvements
• Performance optimization
• Comprehensive testing

🎬 Demo Features

• Offline Mode Demo: Unplug WiFi and show extension still working
• Real-time Summarization: Watch tabs get summarized as you browse
• Smart Clustering: See similar tabs grouped automatically using advanced algorithms
• Natural Language Search: Query your tabs with plain English using AI
• Export Functionality: Download organized summaries as Markdown files
• Advanced Analytics: View similarity scores and clustering metrics
• Context-Aware Processing: Different summarization approaches for different content types

🤝 Contributing

This project was created for the Google Chrome Built-in AI Challenge 2025. Contributions are welcome!

1. Fork the repository
2. Create a feature branch
3. Make your changes
4. Submit a pull request

📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

🙏 Acknowledgments

• Google Chrome Built-in AI Challenge 2025
• Chrome Extension API documentation
• Gemini Nano AI model integration

---

Built with ❤️ for the Google Chrome Built-in AI Challenge 2025