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What is Next.js? 5 Reasons It’s the Best React Framework

Next.js is a powerful framework built on top of React that allows you to build high-performance web applications in under 15 minutes. It simplifies complex tasks like routing (moving between pages) and data fetching while providing built-in optimizations that make websites load nearly instantly. By using Next.js, you can improve your site's SEO (Search Engine Optimization) and user experience without manually configuring complicated build tools.

How does Next.js improve the React experience?

React is a library (a collection of pre-written code) focused on building user interfaces using components. While React is excellent for creating interactive elements, it doesn't provide built-in solutions for things like routing or how pages are rendered for search engines. Next.js fills these gaps by providing a structured framework that handles the "heavy lifting" for you.

In a standard React app, the browser often has to download a large bundle of JavaScript before the user sees anything. Next.js uses techniques like Server-Side Rendering (SSR - generating the HTML on a server for each request) to show content to users immediately. This approach makes your application feel much faster and more professional to the end user.

We've found that Next.js significantly reduces the "decision fatigue" beginners face when trying to set up a modern web project. Instead of spending hours choosing a router or a styling strategy, you can start building your actual features right away. The framework enforces best practices by default, which helps you avoid common performance pitfalls.

What are the core features of Next.js 17?

One of the most important features is the App Router, which uses a file-based system to create pages. If you create a file called about.tsx in the app folder, Next.js automatically creates an /about URL for your site. You don't need to write any extra code to link your pages together.

Next.js 17 also utilizes React 20 Server Components, which allow you to keep large parts of your code on the server. This means the user's browser has to do less work, resulting in faster load times on mobile devices. You can also use "Image Optimization" to automatically resize and compress photos, preventing your site from becoming sluggish.

Another key feature is Middleware (code that runs before a request is completed). This allows you to handle things like user authentication (checking if someone is logged in) or redirects very easily. It provides a level of control that used to require a complex backend server setup.

What do you need to get started?

Before you start building, you need to ensure your computer has the right environment. Don't worry if this feels like a lot; you only need to install these tools once.

  • Node.js 24 LTS or 26 LTS: This is the environment that runs JavaScript on your computer. You can download it from the Node.js website.
  • A Code Editor: Most developers use Visual Studio Code (VS Code) because it has great support for React.
  • Terminal Knowledge: You should know how to open your Command Prompt or Terminal and type basic commands.
  • Basic React Knowledge: You should understand what a component (a reusable piece of UI) is and how to use props (data passed to components).

How do you create your first Next.js project?

Creating a new project is straightforward because Next.js provides a "starter kit" command. Follow these steps to get your first site running on your local machine.

Step 1: Open your terminal. Navigate to the folder where you want to keep your projects using the cd command.

Step 2: Run the installation command. Type the following command and press Enter:

npx create-next-app@latest my-awesome-project

Note: npx is a tool that comes with Node.js to run packages without installing them globally.

Step 3: Choose your settings. The terminal will ask you several questions. For beginners, we recommend selecting "Yes" for TypeScript, ESLint, and Tailwind CSS, and "Yes" for the App Router.

Step 4: Enter the project folder. Type cd my-awesome-project to move into your new directory.

Step 5: Start the development server. Run the following command:

npm run dev

What you should see: The terminal will tell you the server is running at http://localhost:3000. Open that link in your browser to see your new website.

How does the file structure work?

When you open your project in a code editor, you will see several folders. The most important one is the app folder, which contains the logic for your website's pages.

Inside the app folder, you will see a file named page.tsx. This is the "Home" page of your website. If you want to create a new page, like a "Contact" page, you simply create a new folder named contact and put a page.tsx file inside it.

// app/contact/page.tsx
export default function ContactPage() {
  return (
    <div>
      <h1>Contact Us</h1>
      <p>This is our new contact page!</p>
    </div>
  );
}

What this does: This code creates a simple functional component that displays a heading and a paragraph. Next.js will automatically render this when you visit /contact.

What are common mistakes beginners make?

A common mistake is trying to use "Client Side" features inside "Server Components." By default, all components in the app folder are Server Components, which means they can't use things like useState (a way to track data changes in the UI). If you need interactivity, you must add the string "use client"; at the very top of your file.

Another "gotcha" is forgetting to use the <Link> component for navigation. Beginners often use standard <a> tags (HTML anchor tags), which cause the whole page to refresh. Using the Next.js <Link> component allows the app to swap content instantly without a full reload.

Finally, don't worry if you get overwhelmed by the number of files in a new project. Many of those files are configuration files (like next.config.js or tsconfig.json) that you won't need to touch for a long time. Focus on the app folder while you are learning the basics.

Next Steps

Now that you have your first project running, try changing the text in app/page.tsx and watch the browser update instantly. You might also want to explore how to fetch data from an API (a way for programs to talk to each other) using the fetch function directly inside your components.

Once you feel comfortable with basic pages, look into "Dynamic Routes," which allow you to create pages based on IDs, like a blog post or a product page. The best way to learn is to build a small project, like a personal portfolio or a simple task list.

For more guides, visit the official Next.js documentation.

Read the Next.js Documentation