React Performance Optimization: A Detailed Guide to Optimize ReactJs App

React Web Application

Posted on 08 Aug 2024 13 min read Share On:

React Performance Optimization techniques are implemented by enterprises to enhance user experience from web applications. To your knowledge, There are nearly 3,685,454 live websites that utilize the ReactJs framework for accessibility. This data shows the popularity of websites in US-based enterprises.

Companies can acknowledge the statistics to implement the ReactJs to accomplish the work. However, they must also understand that React Performance Optimization is necessary to improve the serach visibility of a web application over the internet.

Video Caption: React Performance Optimization techniques

The above video shares the information for the various React Performance Optimization techniques. The developers of large enterprises can implement these techniques to evaluate business performance.

Facts About React Performance Optimization

In the near future, enterprises are willing to build fast-loading web and mobile applications to provide enhanced customer experience. Some more facts that drive enterprises to perform React Performance Optimization are shared below for reference:

With more than 11 million websites across the globe, ReactJs is the top framework for software development.
ReactJs supports constant updates and the resources that are required by the developers for creating the supreme applications.
Improved user interaction with the application is achieved when the ReactJs applications are optimized.
Page load speed for websites is improved which is also beneficial to perform search engine optimization.
Enterprises gain a competitive advantage because their websites are quick to access as compared to other business websites.

Willing to Enhance Performance of Web Application?

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Top 10 Tips for React Performance Optimization

UI updates are a critical part of software development, thus, fewer tips could be effective for businesses to improve app performance.

Image Captions: Top 10 Tips for React Performance Optimization

Check these out from below:

Tip 1: Minimize Component Renders

After identifying that there are unnecessary renders in the application, those need to be eliminated to optimize application performance. However, the developers can make use of techniques such as ComponentUpdate or React.memo for optimizing renders. This will improve the application’s efficiency.

Tip 2: Virtualize Long Lists

React-window or react-virtualized can be used to optimize long lists that will enable the user to browse the essential data on a specific web page. Along with this, the document object model is used for efficient scrolling.

Tip 3: Optimize Image Loading

Pixel size matters for efficient page loading because users do not appreciate waiting for a long while browsing a web page. However, optimizing image loading by resizing or compressing it can be effective. loading=lazy attribute in HTML can be used to implement ‘image loading’. The code for this optimization is:

import React, { Suspense } from ‘react’;

const LazyImage = React.lazy(() => import(‘./LazyImageComponent’));

const App = () => (

<Suspense fallback={<div>Loading…</div>}>

<LazyImage />

</Suspense>

);

export default App;

3 supreme benefits will be reduced usage of bandwidth, improved user experience, and enhanced page load times.

Also Read: AngularJS vs ReactJS: Quick Comparison

Tip 4: Code Splitting for UI/UX

React already provides the support for code splitting ‘React.lazy’. The developers have to dynamically import it to reduce bundle size. The basic code is shared below for a component named ‘My Component’:

MyComponent.js

import React from ‘react’;

const MyComponent = () => {

return <div>This is my component!</div>;

};

export default MyComponent;

The dynamic import for code splitting will be helpful for the users to get a thorough experience of the Reactjs application.

Tip 5: Bundle Size Optimization

Tree shaking and code splitting are the two methods that can be used to optimize the bundle size. Tools such as source-map-explorer or webpack-bundle-analyzer can be used to detect the bundle size after which the optimization can begin. The code for tree shaking is shared below:

// utils.js

export const usefulFunction = () => { /*…*/ };

export const unusedFunction = () => { /*…*/ };

// index.js

import { usefulFunction } from ‘./utils’;

This will remove unused code to reduce the bundle size. Tools such as Webpack or Rollup ensure the correct configuration of the code.

Tip 6: Use Memoization Function

Memoization can be implemented with React.memo, useMemo, and useCallback. This function will prevent unnecessary renders in the code to enhance the performance of the application. Note that use the function when the recreation of a child component needs to be avoided.

import React, { useCallback } from ‘react’;

const ChildComponent = React.memo(({ onButtonClick }) => {

console.log(‘ChildComponent rendered’);

return <button onClick={onButtonClick}>Click Me</button>;

});

const ParentComponent = () => {

const handleClick = useCallback(() => {

console.log(‘Button clicked’);

}, []); // Empty dependency array means the function is memoized and not recreated

return <ChildComponent onButtonClick={handleClick} />;

};

export default ParentComponent;

The above code is simply an example that shows that handleClick is memoized to ChildComponent. Thus, the changes will be reflected when there is a modification in handleClick.

Tip 7: Optimize Network Requests

Throttling can be implemented to ensure that the code is executed at specific intervals of time. The following code can be used:

import { useState } from ‘react’;

import throttle from ‘lodash/throttle’;

const ScrollComponent = () => {

const [scrollPosition, setScrollPosition] = useState(0);

const handleScroll = throttle(() => {

setScrollPosition(window.scrollY);

}, 100); // 100ms throttle time

useEffect(() => {

window.addEventListener(‘scroll’, handleScroll);

return () => window.removeEventListener(‘scroll’, handleScroll);

}, []);

return <div>Scroll Position: {scrollPosition}</div>;

};

A cache header such as Cache-Control can used to remove unwanted data from the network.

Tip 8: App Performance Monitoring

Bottlenecks in the code can directly affect the performance of ReactJs Applications without a doubt. Chrome DevTools has 3 crucial panels such as network, memory, and performance that are valuable to provide great insights into the performance of a ReactJs application.

React Profiler, on the contrary, completes profiling and component interactions to reduce unnecessary renders. Some more tools and libraries for performance monitoring are web vitals, react developer tools, lighthouse, and redux dev tools.

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Tip 9: Server-Side Rendering

Besides enabling a superior user experience, React Performance Optimization also optimizes the site’s performance. Implement next.js for API routes, image optimization, code splitting, and removing cache. Another way is to implement Gatsby. The code for Gatsby is as follows:

npx gatsby new your-app-name

cd your-app-name

// gatsby-ssr.js

import React from ‘react’;

export const wrapRootElement = ({ element }) => {

return (

<React.Fragment>

{element}

</React.Fragment>

);

};

gatsby develop

GraphQL Data Layer is effective for fetching the data and building static pages for ReactJs. Use gatsby-image and gatsby-plugin-image in the code to optimize the image for a web page.

To summarize, both Gatsby and next.js are effective for optimizing a ReactJs application.

Also Read: Top ReactJS Development Tools to Build High-Performance Applications

Tip 10: Maintain App Testing Consistency

The previous nine tips are effective for React Performance Optimization only when consistency is maintained by the developers. The dedicated development team has to collaborate to optimize the ReactJs application. Regular testing can update the application to enhance the user experience and boost its speed.

We hope that the above-listed React Performance Optimization tips will be helpful for enterprises to enhance the performance of their web applications. These are the easy-to-implement tips whose code can be modified according to the project by the developer. The project managers can guide the development team according to the above tips to ensure that the performance of the application is enhanced.

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What are the Tools for ReactJs Development?

As you have now understood the tips, here are some of the tools that can be used by ReactJs developers to enhance the overall performance of an application.

1. Code Sandbox

This online editor helps ReactJs developers build applications from prototype to deployment. Packages and frameworks can be conveniently integrated into the web application with code sandbox. The tool is effective when the enterprises have to share a prototype with the client within a limited time duration.

2. Ant

It comprises various React UI libraries to build interactive interfaces. Ant is good for enhancing user experience as it is a high-quality react component. The developers can easily integrate the functionalities as per the requirements to create interactive user interfaces.

3. Onsen

Why only web applications? The enterprises would also want to work on mobile apps. If there is a need to build hybrid mobile applications then Onsen is great as it offers a powerful API. The other libraries such as React, Vue, and JQuery build compatible applications.

4. React Cosmos

The developers can build reusable react components and ensure low-maintenance solutions. This helps businesses to build ReactJs applications cost-effectively. This is for sure that the developers have to make certain changes in the web applications or the prototype for which React Cosmos will be helpful.

5. Storybook

The component-driven tool is helpful to check the user interface before the initial phase of software product development. The developers can create and test the components to enhance the performance of a ReactJs application. The complex ReactJs applications can be built promptly with Storybook.

The above-listed were some of the Top choices for ReactJs Developers that can be utilized for a successful implementation.

Also Read: Top Tools for ReactJs Developers

Besides ReactJs, there are other frameworks such as Angular, Vue, and Svelte that enterprises utilize for prompt application development.

But we are discussing why only ReactJs is considered crucial for the development procedure. Is there a scope for the companies to continue effectively working with it or not? Let’s dive into the section to know the prompt details.

ReactJs: Virtual DOM manages the rendering issues to look out for in terms of performance.
Angular: To build single-page applications, this framework is quite of use to build effective applications. Ahead of time compilation tool is available that improves load time.
Vue: Unlike ReactJs, Vue also makes use of Virtual DOM for optimizing app performance.
Svelte: Offer compile-time optimization for better performance.

In summary, all the frameworks have a distinct value regarding web application development. Thus, the project managers can consider anyone of these according to their project requirements.

Ready to optimize your web app for peak performance?

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Conclusion

Enterprises that are dealing with issues to maintain operational efficiency and to provide a better user experience must implement the best practices of React Performance Optimization such as component optimization, code splitting, and efficient data handling.

To make the application responsive, advanced techniques like server-side rendering, static site generation, and progressive web app integration can be used. Moreover, the selection of the right tools and libraries for performance depends on the project size. Contact us today to get proper assistance in optimizing the performance of ReactJs applications.

Also Read: 25+ Top React Libraries That are Worth Trying in 2024

How Hidden Brains Can Help to Build a React Js Application?

Hidden Brains has a simplified approach to help enterprises Hire ReactJs Developers. There is a 5-step process that recruiters have to follow. First is to drop an inquiry, the next is to consult with our experts, third one is to select an engagement model. By following these steps enterprises will find potential candidates.

After that, the recruiters can sign off and begin working on projects with the developers. The last step is to scale your team with an efficient team of developers. The enterprises, project managers, or recruiters can connect with us by emailing us at biz@hiddenbrains.com.

Baffled by which framework to choose for web application development? Contact Us to get the proper solution to your precise queries.

Frequently Asked Questions

The enterprises might have got the idea for optimizing the ReactJs application. However, the resolution for more specific queries can be checked in this section.

What are Common Performance Issues in ReactJs Applications?

The enterprises must watch out for the concerns in software to maintain user interactions. The easiest way is to resolve the performance issues that are slow server-side rendering, clumped component trees, and inefficient component rendering.

How to Optimize React Component Rendering?

As we have already mentioned in the blog, usage of React.memo for functional components, PureComponent for class components, and avoiding inline functions or objects in render methods can be helpful to optimize performance.

What is Server-side Rendering and How to Optimize it?

Server-side Rendering is performed before a React application is deployed on the client side. SSR fulfills a request of the user when the request for a web page. It needs to be optimized to reduce server-side computations, cache, and to minimize the amount of HTML sent to the client.

What are the Strategies for Handling High-traffic React Applications?

To avoid crashing or slow loading of a ReactJs web application, there are fewer strategies that developers can use. These include the usage of DN for static assets, optimized rendering, server-side optimization, data fetching, and implementation catching strategies. With these strategies, a large number of users can access the application without experiencing a server load or any other issues.

Why Testing is Important After React Performance Optimization?

The speed and responsiveness of the ReactJs applications need to be ensured. React dev tools are essentially used to check the performance. Software testing allows developers to identify issues in the application that can be resolved before deployment.