All About PWA (Progressive Web Applications)
Progressive Web Applications

Progressive Web App (PWAs) is the latest web capabilities that deliver an app-like user experience. Just like today’s rich web applications, PWAs try to create a similar user experience as a native app to much extent. They can be best described as the compilation of latest technologies, Web API and Web designs, concepts that can provide an app-like experience on the mobile web.

With PWA, mobile developers will be more beneficial as they will reach more users beyond the confined app stores. With a progressive web app, a developer will not have to go through an approval process and allowing the app to be used as soon as it is ready. There will be no need to manually update the application, as the revised app will automatically be available to everyone with no longer restricted by iOS and Android’s guidelines. The end-user will be able to access the PWA directly, without having to download it from an app store. As the link would be ‘linkable’, anyone can launch the app straight from the URL. This link can be shared on Social Media, online ads, text messages, e-mail or you can link to a QR code as well. Overall, it would be much easier for users to access the app.

According to the survey, almost 20% of the users are lost when they need to wait for it to download and end up using their space before actually starting to use the app. But, with PWA the number of steps has been drastically reduced making the probability higher for actually using the app by its users.

With Service Worker, PWA loads instantly regardless of the network quality and is designed to work offline, on the minimal quality network and is insoluble. It works as a script that works behind the scenes and runs the events like push notifications, content caching, connectivity changes etc. Basically, a service worker is just a Javascript file like any other running in the background with the help of pre-caching, serving the user with the newest content upon launch. The service worker is currently supported by the major mobile browser and is available with Chrome 50 only.

Now with the App Shell Model, the shell of application UI and the content inside of it can be separated and can be cached separately also. It is not a Web API or a framework, but a design approach with a set of HTML, CSS, and Javascript required to contribute to the main page of the application. When we open a web site, we wait for the entire main page to get a download which includes not only the dynamic content of the page but also the images, stylesheets, fonts, etc. and most of them remain the same no matter how many times we open the site again. With PWA, the static resources are pulled off from the app shell built off into the cache.

In conclusion, while native apps are by no longer going to extinct, a PWA can provide the ideal solution for the extraordinary mobile experience of the costumers. Hopefully, in the coming months, new features for Ionic apps will be released to enable developers to get the best of both of the worlds, cross-platform app store deployment on iOS, Android and Windows along with the deployment to the mobile web as a Progressive Web App with the same code. Stay updated with Sensation Software Solutions!