What Is Next.js, and How to Work With It?

Next.js is a powerful React-based framework designed to help developers build fast, scalable, SEO-optimized, and production-ready websites and web applications. Unlike plain React, which mainly renders content on the client side, Next.js supports multiple rendering strategies such as Server-Side Rendering (SSR), Static Site Generation (SSG), and Incremental Static Regeneration (ISR). These features allow pages to load faster, improve search engine visibility, and provide a better user experience.

Next.js also includes file-based routing, which removes the need for external routing libraries and makes project structure easier to manage. It offers built-in performance optimizations, such as automatic code splitting, image optimization, font optimization, and prefetching, all of which help improve Core Web Vitals.

Additionally, Next.js supports API routes, allowing developers to build backend functionality directly inside the same project. This makes it an excellent choice for full-stack applications, SaaS platforms, blogs, e-commerce sites, and modern WordPress headless frontends. With seamless deployment on platforms like Vercel, Next.js has become a standard tool for building modern, high-performance web applications.