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What is Next.js?

Understanding Next.js framework and its features.

What You'll Learn

  • What Next.js is
  • Key features
  • Why use Next.js

What is Next.js?

Next.js is a React framework that provides server-side rendering, static site generation, and other production-ready features out of the box.

Key Features

  • Server-Side Rendering (SSR) - Pages rendered on server
  • Static Site Generation (SSG) - Pre-build pages at build time
  • File-based Routing - Routes based on file structure
  • API Routes - Backend endpoints in same project
  • Image Optimization - Automatic image optimization
  • Zero Config - Works out of the box

Why Next.js?

code.jsJavaScript
React (SPA)          vs    Next.js
ā”€ā”€ā”€ā”€ā”€ā”€ā”€ā”€ā”€ā”€ā”€ā”€ā”€ā”€ā”€ā”€ā”€ā”€         ā”€ā”€ā”€ā”€ā”€ā”€ā”€ā”€ā”€ā”€ā”€ā”€ā”€ā”€ā”€ā”€ā”€ā”€
Client-side only           SSR + SSG + CSR
Manual routing             File-based routing
No SEO by default          SEO friendly
Manual code splitting      Automatic splitting
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How does file-based routing work in Next.js?