Schema Markup Validator & Generator is a free Chrome extension designed for developers and SEO professionals to enhance web pages with structured data. It automatically detects various markup formats such as JSON-LD, Microdata, and RDFa, ensuring comprehensive validation by identifying errors and warnings in existing structured data. The built-in generator allows users to create schema markup using templates tailored for different content types like articles, products, and organizations.

Additionally, the extension features a rich results preview, enabling users to visualize how their markup will appear in search results. Its side panel interface allows seamless operation within the current tab, while quick actions enable easy copying or downloading of schema. With privacy-focused processing and theme support for light and dark modes, this tool is ideal for SEO specialists, web developers, content managers, and digital marketers aiming to improve search visibility.