A comprehensive web application for analyzing SEO metrics and website performance, built with a Node.js/TypeScript backend and React/TypeScript frontend.

• JWT Authentication: Secure user registration/login with Firebase Auth.
• SEO Metrics Analysis:
  • Title tags, meta descriptions, header tags (H1-H6)
  • Image alt attributes analysis
  • Keyword density calculation
  • Internal/external link ratio
• Performance Insights:
  • Page load speed via Google PageSpeed Insights
  • Mobile friendliness scoring
  • Resource optimization checks (CSS/JS minification, image compression)
• History Storage: Firestore database for analysis history
• REST API: Clean endpoints for frontend integration

• 🔒 User Authentication (Login/Register)
• 📊 Interactive Dashboard
• 📈 Visual SEO scoring system
• 📜 Analysis history tracking
• 🎨 Responsive UI with Tailwind CSS
• 🔄 Real-time analysis results

• Runtime: Node.js
• Framework: Express
• Language: TypeScript
• Authentication: Firebase Admin SDK
• SEO Parsing: Cheerio
• Performance: Google PageSpeed Insights API
• Database: Firestore
• Security: JWT

• Framework: React + TypeScript
• Styling: Tailwind CSS
• Routing: React Router
• HTTP Client: Axios
• Icons: Heroicons
• Build: Vite

• Node.js (v18+)
• Firebase project
• Google Cloud API key

cd backend
npm install

Create a .env file in backend Directory

PORT=3000
PAGE_SPEED_API_KEY=your-google-api-key
JWT_SECRET=your-jwt-secret

• Go to Firebase admin dashboard and make a new Project
• Dowload serviceAccountKey.json and Save it in src folder

cd backend
npm install
npm run dev 

API Endpoints Authentication Method Endpoint Description POST /auth/register User registration POST /auth/login User login Analysis Method Endpoint Description POST /api/analyze Website analysis GET /api/history Get analysis history

Acknowledgments Firebase for authentication and database

Google PageSpeed Insights API

Cheerio library for HTML parsing

React community for UI components