Next.js is a powerful React framework that enables developers to create high-quality web applications. It provides built-in optimizations for images, fonts, and scripts to enhance user experience and Core Web Vitals. Next.js supports flexible data fetching strategies, including server and client-side fetching, and allows server code execution directly within components using Server Actions. Its advanced routing system, based on the file system, supports complex patterns and nested layouts. Dynamic HTML Streaming, integrated with the App Router and React Suspense, delivers UI instantly from the server. The framework offers robust CSS support for various styling tools like CSS Modules and Tailwind CSS, along with Route Handlers for building API endpoints. Middleware provides control over incoming requests for authentication and routing. Next.js leverages React Server Components to add interactivity without extra client-side JavaScript and offers flexible rendering options like Incremental Static Regeneration (ISR).

Built on a foundation of fast, production-grade tooling, Next.js is powered by React and includes Turbopack, an incremental bundler optimized for JavaScript and TypeScript, and Speedy Web Compiler for fast developer tooling. It offers pre-built solutions and templates for various applications like e-commerce, blogs, AI, and SaaS. Next.js is trusted by major companies for its performance, efficiency, and developer experience.