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ICSM Computer

ICSM Computer

03-Jun-2025

Next.js is a popular open-source React framework for building modern web applications with powerful features out of the box.

What is Next.js?

  • Built on React: Next.js is a framework that extends React by adding server-side rendering and many other advanced features.
  • Hybrid rendering: Supports Server-Side Rendering (SSR), Static Site Generation (SSG), and Client-Side Rendering (CSR) — all in one framework.
  • File-based routing: Pages are created by adding React components in the pages/ folder — automatically mapped to routes.
  • API routes: You can create backend API endpoints directly in the Next.js project.
  • Optimized performance: Automatic code splitting, image optimization, and fast page loads.
  • Built-in CSS and Sass support: Plus support for CSS-in-JS libraries.
  • Full-stack capabilities: Build frontend and backend logic together.
  • Easy deployment: Works smoothly with platforms like Vercel (creator of Next.js) for instant deployment.

Key features of Next.js

Feature Description
Server-Side Rendering (SSR) Render pages on the server per request for SEO and speed
Static Site Generation (SSG) Pre-render pages at build time for fast static websites
API Routes Build backend API endpoints as part of your app
File-based Routing Route pages by file names automatically
Image Optimization Automatic image resizing and optimization
Incremental Static Regeneration Update static pages after build without full rebuild
TypeScript Support Built-in support for TypeScript

Who uses Next.js?

  • Developers building React apps that need SEO, fast performance, or backend API functionality.
  • Teams wanting to build scalable full-stack web apps.
  • Projects that require a mix of static and dynamic content.

Simple example

// pages/index.js
export default function Home() {
  return <h1>Welcome to Next.js!</h1>
}

This creates a homepage automatically accessible at /.

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