Next.js is a popular open-source web framework for building server-side rendered (SSR) and statically generated (SSG) React applications. It provides an intuitive API for server-side rendering and allows developers to build high-performance React applications with ease.

Next.js offers several key features that make it a powerful tool for building web applications. These features include:

Server-side rendering: Next.js allows developers to build React applications that can be rendered on the server-side, improving performance and allowing search engines to crawl content.

Static site generation: Next.js can generate static HTML files at build time, which can be deployed to a CDN for faster loading times.

Automatic code splitting: Next.js automatically splits code into smaller chunks, improving performance by only loading the necessary code on each page.

API routes: Next.js provides a simple way to create serverless APIs, which can be used to fetch data from a database or third-party service.

Image optimization: Next.js optimizes images on the fly, reducing the size of images and improving performance.

Overall, Next.js is a powerful framework that makes it easy to build high-performance React applications with server-side rendering and static site generation.