10 Ways To Increase The Performance Of Your Next.JS App

Rlogical Techsoft
7 min readDec 15, 2022

Due to the rise of Next.js, web application development has undergone a radical transformation in recent years. The time it takes to serve the application’s code, data and styles to the client in the first-round trip significantly impacts an application’s speed.

The application’s performance suffers when the server sends additional assets, such as images, during the initial round trip. Fortunately, a next.js development company or developers can speed up their next.js applications by following a few best practices, which we will discuss further.

What Is Next.Js?

Next.js is a free and open-source React framework that makes it easier for developers to quickly create high-performance web applications with great user experiences and benefits for SEO. Leading companies like Uber, Netflix, and Starbucks rely on it.

Image optimization, server-side rendering and hybrid static, bundling and automatic code splitting, optimization for CSS and JavaScript, and other features are included in Next.js.

However, even with an optimized framework, it becomes increasingly important to use every framework feature as your website and apps grow. Knowing how to improve Next.Js’ performance is essential for developing excellent apps that provide users with an engaging experience.

Core Features

  1. TypeScript Support: Next.js has excellent TypeScript support because it is written in TypeScript.
  2. Static Exports: Next.js lets you export a static website from your app using the next export command.
  3. Prefetching: The Link component, which is used to connect various pages, supports a prefetch prop that prefetches page resources in the background automatically, including code that is missing because of code splitting.
  4. Ecosystem Compatibility: Next.js is compatible with JavaScript, Node, and React ecosystems.
  5. Server Rendering: You can deliver Respond parts on the server side before sending the HTML to the client.

6. Hot Code Reloading: Next.js framework reloads the page when it identifies any modification saved to the circle.

  1. Automatic Routing: No configuration is required; any URL is mapped to the filesystem and files in the pages folder. Naturally, customization options are available.
  2. Components With A Single File: Using styled-JSX, built by the same team and completely integrated, it is simple to add styles that are scoped to the component.

How To Improve Your Next.Js Performance?

1. Multiple Zones

A zone is a single Next.js app deployment. Additionally, you can combine multiple zones into a single app. Let’s say you have the following two apps:

An application for serving/blog/**

Another application for serving all other pages.

With multi-zone support, you can combine both apps into a single one so your customers can browse it using a single URL. However, you can develop and deploy both apps independently.

2. Dynamic Imports

When applications can load all JavaScript and CSS simultaneously, load times significantly increase, and the user experience suffers. Next.JS App Development supports dynamic imports, which let you break up the code into shorter parts and load them just when necessary.

This allows you to simultaneously serve everything for that page, including any components the user might not need. Additionally, this aids in reducing the application’s overall size. In Next.js, you can split code in two different ways.

  • Splitting Based On Routes

For each route, Next.js divides JavaScript into manageable chunks by default. As clients utilize your application, they cooperate with various UI components on the page, causing Next.js to send the pieces of code related to each course. Because of this, less code needs to be parsed and compiled at once.

  • Splitting Based On Components

It can be optimized on the component level. You can divide your app’s large components into separate chunks. This means that components that aren’t important or only render when the user interacts with the user interface can be lazy-loaded as needed.

3. Optimizing Scripts From Third Parties

When you use scripts from third parties like Google Analytics, they sometimes use many precious resources from the main thread. Due to these third-party scripts, more render-critical parts are blocked. Next.js’s next/script part in Next.js lets you choose when to load these scripts. Party Townor a visual development platform like Builder, such as Next.js, can help you make the most of your JavaScript while giving you more flexibility.

4. Image Optimization

Image optimization is automated thanks to the powerful and adaptable image optimization component included in Next.JS App Development. Here’s a quick list of how Next.js helps you optimize your images to boost performance:

  • Make the images you want to load first. It will asynchronously load the images above the fold and those below it as you scroll down. Usually, the Next.js app development picture device does this.
  • Serves the appropriate image size in the chosen format based on the bandwidth and resources available to the user.
  • Uses placeholders until the entire image load
  • Adapts to responsive designs so images can scale or fit the size.
  • Supports next-generation formats like WebP.

5. Additional Optimization

The CSS can be optimized for improved performance in Next.js. You can use Js’s built-in CSS support to optimize the styles. To reduce the size of the CSS files:

  • Get rid of any unused code first.
  • Avoid @import and lazy loading of CSS, load render-critical CSS in HTML, and ignore CSS in JavaScript.
  • Optimize the fonts with swap, optional, and fallback font displays to reduce bloat and speed up page loading.

The [Name].module.css file naming convention makes CSS modules compatible with Next.js. CSS collisions can be avoided by utilizing CSS modules, which can be imported into any part of your application.

6. Caching

Caching reduces the number of requests to external services, improves application response times, and improves app rendition.

Next.Js typically includes caching header tags for fixed assets chosen from /_next/static, which include files like static images, JavaScript, CSS, and others.

After being requested, images are dynamically optimized and saved in the distDir>/cache/images directory. After that, these optimized image files will run as concurrent requests until the timer runs out.

A cache file that has expired is deleted when it is requested. As a result, you can now create yet another cache-optimized image.

7. ISR

ISR stands for Incremental Static Regeneration. Next.js pre-renders each page as a matter of course. Instead of using JavaScript on the client side, it generates HTML in advance, enhancing SEO and performance.

There are two methods for carrying out this pre-rendering: server-side rendering and static generation.Next.js allows you to look over these choices for each page.

Static generation is the best choice for boosting performance. HTML can be reused on each request in the static generation, which generates it during the build process.

These pages can be cached and served by CDNs without additional configuration, which speeds up the process because they only need to be built once. After your website is built, you may need to create or update pages when scaling it.

You can use ISR or incremental static regeneration to use static generation on each page without rebuilding your entire website. The cached version will be presented to the user when a page pre-rendered at build time is requested.

Next.js will regenerate the page in the interim and invalidate the cache once the page is generated to display the updated page.

8. Analyze Bundles

Examine the next.js development company app’s build with the bundle analyzer. Another crucial solution for optimizing the Next.Js application bundle.

Add the script to your packages by typing “analyze” into the npm install @next/bundle-analyzer command.” ANALYZE = true subsequent build”. After updating the next.config.js file, the analyzer script can finally be executed.

9. Instant Personalization

Even though Next. Js-built static pages load quickly and efficiently, everyone sees the same content. It may be necessary to customize the pages for various audiences from time to time.

On the other hand, personalization typically necessitates sacrificing performance when it is essential.

When a page is exceptionally modified for a client, this could require a few full-circle trips to the server. The particular information special to the client should be brought and delivered on the fly.

JavaScript that hinders your fundamental thread could add more satisfaction. This makes your page load increasingly slow to an unfortunate client experience, particularly on portable.

Using edge middleware, which lets you cache data and serves it from the CDN edge network, can help you solve this issue.

You can separate customized data from the guest’s cookies, similar to their past shopping history, browsing behavior, or buys, which the edge middleware then uses to revamp the page.

These new parameters for the page are fetched and cached at the edge in conjunction with incremental static regeneration from Next.js so that they can be served immediately to subsequent users.

This makes it possible to personalize things quickly without affecting performance.

10. Building Micro-Frontends With Module Federation

Utilizing module federation, you can create micro frontends. Micro frontends are like microservices for the front end. It’s like a self-contained, encapsulated code or component that can be used anywhere. The frontend application can be containerized and consumed anywhere.

The Module Federation feature of Webpack is used to accomplish this. A tool-based approach to implementing micro frontend architecture is Module Federation.

Conclusion

The topic of Next.js performance optimization is very broad and covers a lot of grounds and topics. Understanding all of the built-in components you can use to speed up your website’s loading time is essential when working with a performance-driven lightweight framework like Next.js.

By following the above-mentioned best practices, you will be able to provide all customers with a faster and better web experience with minimal effort.

If you learn how to use and configure Next.js effectively, you can take advantage of those features and begin developing Next.js applications faster.

It has been observed that JavaScript optimization has the greatest potential for enhancing website potential. By connecting your website or any website to any performance insight tool, you can test this yourself.

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Rlogical Techsoft

Web & Mobile App Development Company. Expertise in Mobile App, PHP, ASP .NET, MVC 5 (Razor), MongoDB, NodeJS, AngularJS, ReactJS, Windows App, POS, Scraping.