What is Next.js and Why Use It?

Next.js: React with Superpowers

Next.js is an open-source React framework built by Vercel that adds server-side rendering, file-based routing, API routes, and powerful build optimisations on top of plain React. Where a plain React app is a purely client-rendered single-page application, Next.js lets you choose — per page or even per component — whether to render on the server, at build time, or in the browser.

The framework handles the hard parts of production: code splitting, image optimisation, font loading, environment variables, caching strategies, and deployment. CPCODELAB's own website is built with Next.js, taking advantage of its App Router, Server Components, and Vercel deployment pipeline.

Next.js vs Plain React

• Routing: React has no built-in router; Next.js gives you file-system routing out of the box.
• Server rendering: React alone renders in the browser; Next.js can render HTML on the server for faster first paint and better SEO.
• API layer: Next.js includes Route Handlers so you don't need a separate Express server for simple endpoints.
• Image & font optimisation: Built-in next/image and next/font replace manual optimisation work.
• Data fetching: Server Components fetch data directly — no useEffect, no loading spinners for initial data.