Is NextJS a Web Server?


Scott Campbell

Is NextJS a Web Server?

NextJS is a powerful framework that allows developers to build server-rendered React applications. However, it’s important to note that NextJS itself is not a web server. Instead, it runs on top of a web server like Node.js or Express.

What is NextJS?

NextJS is a JavaScript framework created by Zeit. It provides the ability to build modern web applications with React while also offering server-side rendering (SSR), static site generation (SSG), and other powerful features out of the box.

With NextJS, you can develop highly performant and SEO-friendly websites without compromising on the benefits of using React for building dynamic user interfaces.

How Does NextJS Work?

When you run a NextJS application, it starts a development server that handles requests from clients. This development server can be configured to run on different ports and can be customized to suit your application’s needs.

When a request is made to the server, NextJS takes care of rendering the appropriate page component based on the requested URL. It generates an HTML representation of the page on the server and sends it back to the client for display.

Server-Side Rendering (SSR)

The key feature of NextJS is its support for server-side rendering (SSR). SSR allows your web pages to be pre-rendered on the server before being sent to the client. This has several advantages:

  • Better Performance: With SSR, initial page load times are significantly reduced since the HTML content is already available when the user visits your website.
  • Improved SEO: Search engines can easily crawl and index your pages since the content is available in the initial HTML response.
  • Enhanced User Experience: Users can see the content of your pages even if JavaScript is disabled in their browsers.

NextJS makes server-side rendering a breeze by handling all the complicated aspects like data fetching, routing, and code splitting for you.

Static Site Generation (SSG)

In addition to server-side rendering, NextJS supports static site generation (SSG). With SSG, your NextJS app can pre-generate HTML files for all the possible routes during build time. This means that the server doesn’t need to render each page on every request.

This approach is especially useful for websites with static content or pages that don’t require frequent updates. It allows you to deliver fast-loading, pre-rendered pages while still benefiting from dynamic functionality when needed.


In summary, NextJS is not a web server itself but rather a framework that runs on top of Node. It provides powerful features like server-side rendering and static site generation, allowing developers to build high-performance React applications with ease.

By leveraging NextJS, you can take advantage of both the benefits of React and the performance gains offered by server-side rendering and static site generation. So whether you’re building a simple blog or a complex web application, NextJS has got you covered!

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