Gatsby Static Site Generator

Gatsby is an open-source framework for building fast websites and applications using React, created by Kyle Mathews in 2015, combining the performance of static site generation with the interactivity of single-page applications, using GraphQL for data layer management, providing a plugin ecosystem for integrating data from content management systems, databases, and APIs, adopted by over three hundred thousand sites including portions of Airbnb, PayPal, Digital Ocean, and NASA for performance-critical marketing and documentation sites. The data layer uses GraphQL to unify content from multiple sources including Markdown files, headless content management systems like Contentful and Sanity, WordPress, databases, REST APIs, and local files, with source plugins fetching data into the GraphQL layer and transformer plugins converting raw data into queryable nodes, enabling developers to query any combination of data in a single GraphQL query with type safety and editor auto-completion. The build process generates static HTML for all pages at build time, with the React application hydrating on the client for interactivity, delivering fast first paint through static HTML, instant page navigation through client-side routing, and automatic code splitting, image optimization, and lazy loading. The plugin ecosystem includes over three thousand plugins for image optimization, SEO, analytics, sitemap generation, RSS feeds, offline support, Progressive Web App features, form handling, and data source integrations. The image processing through Sharp provides responsive images with lazy loading, blur-up placeholders, and WebP conversion. The incremental builds through Gatsby Cloud. Designed for frontend developers.