What are Progressive Web Apps and how do they work?


We have recently observed , mobiles applications reaches 3 times less people than the web but people use more often mobile application on theirs devices that any others browsers. Applications are more popular on devices, because they are strong, fast and robust. They have lot of good feature like pushing notifications, full integration with other apps (and the web), location services, and more. In reality , to reach people effectively , you need to have a website but also you need an mobile app which normally require a mobile site along the way, this request is a lot of work and it could be simplify if we could have an mobile app that function as a website and vice versa. The progressive web apps are supposed to set solutions to these matters as they combine the best of the both worlds the web and the App world. In this article we will find out what they are? Why use an progressive Web App?How do they work? What are the benefits of their use? What are the disadvantages?

1.What are progressive Web Apps?

Progressive Web Apps are traditionals websites, that have characteristics of a classic mobile app, it can be loaded through via a browser , indexed by google. They are websites that offer the user a mobile-app-like experience, they perform better and are more safely and load faster.They are made out of CSS, HTML and JavaScript and their content can be accessed the same way as with a native app, across differents platforms.They are hosted directly on their associated website. Developers can update them directly on their web server without submitting those updates to several different app stores, and the same app will run on all browsers and platforms.Progressive Web Applications are likely to play an important role in mobile optimization, they are an initiative supported by Google.

2.Why use Progressive Web Apps?

3.How do Progressive Web Apps work?

The foundation that Progressive Web Apps are built on is “service workers”. These are JavaScript files that make it possible to load cached content in the background. This JavaScript works offline, and does not require an internet connection. Another advantage of service workers is that delays when calling up another page are almost completely eliminated

For a Progressive Web App to work in any browser, it requires the so-called application shell. This ensures that a mobile view of the URL is generated, and that the app is adapted to the functionality of the browser being used. The application shell is also responsible for the design of the PWA reflecting the look of a native app. This means that the app shell is the basis of dynamically loading content. It is loaded into the device’s cache when the PWA is called.

The third important component of a PWA is the web app manifest. This is a JSON file that is saved on the server. This manifest file enables the user to save the PWA, once it has been called, on their device like a native app. In fact, it is not the whole application that is installed, as would be the case with a native app, but just the foundation in the form of (at least) an app shell. With the web app manifest, an icon for saving the PWA can be placed on the home screen. It also makes it possible to define whether the app can be loaded without a browser or in an available browser. The script could also be used to manage the look and/or functions of the app. Finally, it is possible to enable push notifications to be sent to users, providing the users agree to this capability when “installing” the app.

Progressive Web Apps are built on web standards called Service Workers, HTTPS, and Web App Manifests. Service Workers allow developers to build websites that can work when there’s no network. The Web App Manifest allow users do things like pin the app to their home screens, or interact with web apps as a native app. The point is to create something that will work when there’s no internet connection, and make it possible to launch it right from the Home screen, just like a native app.

4.What are the advantages of Progressive Web Apps?

5.What are the disadvantages of Progressive Web Apps?

Progressive web apps are supposed to be the next big thing, but they do have their drawbacks. For example, they don’t work on all browsers such as Edge, Internet Explorer, and other custom browsers. PWAs do work on newer versions of browsers such as Samsung’s Android browser, Opera, and Chrome.

The limitation also affects devices since not all of them can support them. Android does support PWAs, but there are some support issues since it’s still relatively new.They don’t work on all browsers such as Edge, Internet Explorer, and other custom browsers.


PWAs are predicted to become more mainstream in the future years as these corporations begin pushing them.They are definitely the future since they will only help improve the user’s mobile experience.

Since moving to PWAs, Forbes has seen a 43 percent increase in users, and those users stay twice as long. Lyft and Uber have also launched PWAs aimed at users with limited data bandwidth and connectivity. The sites do everything the apps do, but within the browser.Progressive Web Apps are experiences that combine the best of the web and the best of apps.

They are useful to users from the very first visit in a browser tab, no install required. As the user progressively builds a relationship with the app over time, it becomes more and more powerful. It loads quickly, even on flaky networks, sends relevant push notifications, has an icon on the home screen, and loads as a top-level, full screen experience.

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