Smart Shopping Extension is a Chrome extension designed to help users shop smarter by comparing the same product across selected supported websites. Products are identified using their EAN code, allowing the system to match identical items, compare prices, and help users find the best available deal.

The project follows a client-server architecture: the Chrome Extension acts as the client, while a Node.js + Express backend handles the main application logic and communication with external sources. PostgreSQL is used for data storage, and browser automation and web scraping tools are used to collect product information from supported websites. The system also includes price tracking and price-drop alerts for monitored products.