Next.js vs React · Next.js Introduction in Next.js | Next.js

React Is a Library, Next.js Is a Framework

A plain React app (made with Vite, or the old Create React App, which is now deprecated) is a single-page application: the server sends an almost empty HTML file and a big JavaScript bundle; the browser then builds the page. You pick your own router, data library and build setup.

Feature	React + Vite	Next.js
Routing	Install React Router	Built in (folders and files)
First HTML	Empty `<div id="root">`	Full content rendered on the server
SEO	Weak without extra work	Strong (HTML + metadata API)
Backend code	Separate server needed	Route Handlers and Server Actions in the same app
Images / fonts	Manual	`next/image`, `next/font`
Hosting	Any static host	Node.js server, Vercel, Docker, or static export

What the Browser Receives

The biggest visible difference is the first HTML response. Compare a Vite app and a Next.js page:

Example

React + Vite (client-side rendering):

curl -s http://localhost:5173/

Example output

<!doctype html>
<html lang="en">
  <head><title>ShopEase</title></head>
  <body>
    <div id="root"></div>
    <script type="module" src="/assets/index-Bx81kq.js"></script>
  </body>
</html>

Example

Next.js (server rendered):

curl -s http://localhost:3000/

Example output

<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/>
<title>ShopEase</title>...</head>
<body><main><h1>Welcome to ShopEase</h1>
<p>Best deals on mobiles, books and fashion.</p></main>
<script src="/_next/static/chunks/main-app.js" async=""></script>...</body></html>

Tip: Search engine crawlers and link previews (WhatsApp, LinkedIn) read that first HTML. That is why content sites and shops prefer Next.js.

When Plain React Is Enough

Internal dashboards behind a login, where SEO does not matter.
Apps embedded in another site, or apps that must be hosted as static files only.
Learning React itself (see the React material first if you are new).

For public websites, e-commerce, blogs, marketing pages and most full-stack products, Next.js is the common choice.