The UICloner Extension is an AI-driven browser plugin that allows users to clone any UI component on a webpage with one-click operation and automatically generate the corresponding code. Key benefits of this extension include one-click selection, multi-format code support, and real-time previews. Its importance lies in significantly enhancing the efficiency of front-end developers, particularly during UI design and prototyping stages. Background information shows that UICloner Extension supports generating HTML + Tailwind CSS or HTML + pure CSS code, making it suitable for developers needing rapid UI prototype implementation. The plugin is free to use, aimed at improving development efficiency and simplifying the design-to-code conversion process.