How To Develop A Progressive App From Scratch With ReactJS?

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Hieu Tran

2022-10-28 10:53:59

gct solution how to develop a progressive app from scratch with reactjs

With its application efficiency and development simpleness, ReactJS's appearance has shaken up the world of front-end development. In recent years, PWA technology has once again shaken the globe. Therefore, online and mobile applications are currently losing popularity and quality of user experience to progressive web apps.


In this article, GCT Solution will tell you more about how you can make your application stand out by making use of these two technologies. Let's examine briefly what React is, what a PWA is, and how to create PWAs using React.


In fact, it is not time-consuming to build a PWA. The simplest way is to use progressive app builders or developer tools for building PWAs. However, if you need to make a truly high-quality product, you will learn how to do it below.


What Is A PWA?

Progressive Website Apps (PWAs) are web apps that combine progressive enhancement with service workers, manifests, and other web-platform characteristics to provide users with an experience comparable to native apps.


PWAs are installable, progressively improved, responsively constructed, re-engaging, linkable, discoverable, network-independent, and secure.

To understand more about PWA or Progressive Website Apps, you can refer to our article about PWAs in general for more information:

What Should You Know About Progressive Web Apps (PWA) To Decide If It Fits Your Company?




How to Construct a PWA Using ReactJS?

You may create a progressive web app using virtually any JavaScript framework. Consequently, why would you choose ReactJS for this? It is fast, efficient, user-friendly, and extremely well-liked among developers for the same reasons you would choose it to construct any other type of application.


Step 1: Include a manifest for a progressive web app

Let's begin with the definition of a web app manifest. It's a JSON file that informs the browser about your PWA and its anticipated behavior on the user's desktop or mobile device. A web application manifest file must include the application's name, the icon to be displayed on the home screen, and the URL to be opened when the application is launched. Google Chrome, Microsoft Edge, Firefox, Opera, and the Samsung browser support manifests, but Safari only provides limited support. For example:



  "short_name": "Global",

  "name": "GCT Solution",

  "icons": [


      "src": "/images/icons-193.png",

      "type": "image/png",

      "sizes": "192x192"



      "src": "/images/icons-512.png",

      "type": "image/png",

      "sizes": "512x512"



  "start_url": "/global/?source=pwa",

  "background_color": "#0A52D5F",

  "display": "standalone",

  "scope": "/maps/",

  "theme_color": "#0A52D5F"



After creating the manifest, add it to your application. Add a <link> tag to each page of your PWA to do this. For example:


<link rel="manifest" href="/manifest.json">


Step 2: Include service personnel

The service worker is a JavaScript file that operates independently from the main browser thread, intercepts network requests, caches data, retrieves data from the cache, and sends push notifications. Service workers enable PWAs to manage network requests, cache these requests to improve performance, and provide offline access to cached information. In addition, they can receive push messages from a server even when the app is closed, allowing them to provide push notifications to the user in a manner similar to that of a native app.


Service workers rely on two APIs, Fetch and Cache, to guarantee offline app performance. Fetch API is utilized to intercept network requests and change the answer, as well as offer cached data in the event that the network is unavailable. Cache API is separate from the browser's cache.


A few other technical issues pertaining to service workers:


In order to prevent "man-in-the-middle" attacks, service workers exclusively operate via HTTPS.

Since a service worker cannot directly access the DOM, it uses the postMessage() method to communicate with the page.

Service workers cannot utilize synchronous XHR and local storage simultaneously.


Step 3: Validate your PWA

After setting up everything, it is time to verify that your application adheres to PWA criteria. Google has an official tool for this purpose called Lighthouse. Download a Google Chrome extension and activate screening on your website to accomplish this. If the outcome is perfect, congratulations! Your application is optimized for speed as a PWA. If it's less than 100 percent, the service will explain what went wrong and what may be done to enhance performance.


Step 4: Display mobile splash screens

When your app runs for the first time on a mobile device, the browser and initial content may take a bit to load. Instead of displaying a white screen, which may give the impression that the application has frozen, the browser will display a splash screen until the first paint.


Chrome generates the splash screen automatically based on the manifest properties, specifically:


name; background_color; icons


The background color should match the color of the load page to ensure a seamless transition from the splash screen to the application.


Chrome will select the symbol that most nearly matches the device's resolution. In the majority of circumstances, 192px and 512px icons are sufficient, but you can give extra icons for pixel accuracy.




Final thoughts

ReactJS makes PWA development even simpler and more efficient. With the aid of PWA technology, ReactJS applications will become much more potent and efficient than they already are. A progressive web application built using ReactJS is a combination of two exceptional technologies that maximize the benefits of each.


The procedure for developing progressive web applications with ReactJS consists of four steps:

  • Include a manifest for a progressive web app
  • Including service personnel, determining what should be cached and when,
  • Validate your PWA
  • Display mobile splash screens


These four actions will put you one mile closer to achieving business success.


If you are seeking a seasoned IT provider, GCT Solution is the ideal choice. With 3 years of expertise, we specialize in Mobile App , Web App, System Development, Blockchain Development and Testing Services. Our 100+ skilled IT consultants and developers can handle projects of any size. Having successfully delivered over 50+ solutions to clients worldwide, we are dedicated to supporting your goals. Reach out to us for a detailed discussion, confident that GCT Solution is poised to meet all your IT needs with tailored, efficient solutions. 

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