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Progressive Web Apps are web apps that use emerging web browser APIs and features along with traditional progressive enhancement strategy to bring a native app-like user experience to cross-platform web applications. Progressive Web Apps are a useful design pattern, though they aren't a formalized standard. PWA can be thought of as similar to AJAX or other similar patterns that encompass a set of application attributes, including use of specific web technologies and techniques. This set of docs tells you all you need to know about them.
- Secure contexts (HTTPS)
- The web application must be served over a secure network. Being a secure site is not only a best practice, but it also establishes your web application as a trusted site especially if users need to make secure transactions. Most of the features related to a PWA such as geolocation and even service workers are available only once the app has been loaded using HTTPS.
- Service workers
- A service worker is a script that allows intercepting and control of how a web browser handles its network requests and asset caching. With service workers, web developers can create reliably fast web pages and offline experiences.
- Manifest file
- A JSON file that controls how your app appears to the user and ensures that progressive web apps are discoverable. It describes the name of the app, the start URL, icons, and all of the other details necessary to transform the website into an app-like format.
PWAs should be discoverable, installable, linkable, network independent, progressive, re-engageable, responsive, and safe. To find out more about what these mean, read Progressive web app advantages.
To find out how to implement PWAs, read through our PWA developer guide.
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- Add to Home screen
- Add to Home screen (or A2HS for short) is a feature available in modern browsers that allows a user to "install" a web app, ie. add a shortcut to their Home screen representing their favorite web app (or site) so they can subsequently access it with a single tap. This guide explains how A2HS is used, and what you need to do as a developer to allow your users to take advantage of it.
- How to make PWAs installable
- In the last article, we read about how the example application, js13kPWA, works offline thanks to its service worker, but we can go even further and allow users to install the web app on mobile and desktop browsers that support doing so. The installed web app can then be launched by users just as if it were any native app. This article explains how to achieve this using the web app's manifest.
- How to make PWAs re-engageable using Notifications and Push
- Having the ability to cache the contents of an app to work offline is a great feature. Allowing the user to install the web app on their home screen is even better. But instead of relying only on user actions, we can do more, using push messages and notifications to automatically re-engage and deliver new content whenever it is available.
- Introduction to progressive web apps
- This article provides an introduction to Progressive Web Apps (PWAs), discussing what they are and the advantages they offer over regular web apps.
- Making PWAs work offline with Service workers
- Now that we’ve seen what the structure of js13kPWA looks like and have seen the basic shell up and running, let's look at how the offline capabilities using Service Worker are implemented. In this article, we look at how it is used in our js13kPWA example (see the source code also). We examine how to add offline functionality.
- Progressive loading
- In previous articles we covered APIs that help us make our js13kPWA example a Progressive Web App: Service Workers, Web Manifests, Notifications and Push. In this article we will go even further and improve the performance of the app by progressively loading its resources.
- Progressive web app structure
- Now that we know the theory behind PWAs, let's look at the recommended structure of an actual app. We will start with analyzing the js13kPWA application, why it is built that way, and what benefits it brings.
- PWA developer guide
- In the articles listed here, you'll find guides about every aspect of development specific to the creation of progressive web applications (PWAs).
- Structural overview of progressive web apps
- In this structural overview, we'll look at the features that make up a standard web application, as well as some design patterns you can follow when building your PWA.
Everything below this point is left over from the old version of this page and will be revamped as other content is overhauled.
The following guides show you what need to do to implement a PWA, by examining a simple example and showing you how all the pieces work.
- Client-side storage — A lengthy guide showing how and when to use web storage, IndexedDB, and service workers.
- Using service workers — A more in-depth guide covering the Service Worker API.
- Using IndexedDB — The fundamentals of IndexedDB, explained in detail.
- Using the Web Storage API — The Web storage API made simple.
- Instant Loading Web Apps with An Application Shell Architecture — A guide to using the App Shell coding pattern to create apps that load quickly.
- Using the Push API — Learn the essentials behind the Web Push API.
- Using the Notifications API — Web notifications in a nutshell.
- The building blocks of responsive design — Learn the basics of responsive design, an essential topic for modern app layout.
- Mobile first — Often when creating responsive application layouts, it makes sense to create the mobile layout as the default, and build wider layouts on top.
- Add to home screen guide — Learn how your apps can take advantage of Add to home screen (A2HS).
- ServiceWorkerWare — An Express-like microframework for easy Service Worker development.
- oghliner — Not only a template but a tool for deploying Offline Web Apps to GitHub Pages.
- sw-precache — A node module to generate service worker code that will precache specific resources.
- workbox — Spiritual successor to sw-precache with more advanced caching strategies and easy precaching.
- upup — A tiny script that makes sure your site is always there for your users.
- The service worker cookbook — A series of excellent service worker/push recipes, showing how to implement an offline app, but also much more.
- PWA VS Code extension - A collection of all essential code snippets you need to build Progressive Web Apps right there in your VS Code environment.
- Progressive web apps on Google Developers.
- Progressive Web Apps: Escaping Tabs Without Losing Our Soul by Alex Russell.
- Progressive Web Apps Check List.
- The Lighthouse Tool by Google.
- Tools for building progressive web apps with Angular.
- React PWA Guide Kit.
- Offline-capable Pokédex web site.
- Hacker News readers as Progressive Web Apps.
- Progressive Web App: Advantages in a nutshell
- Why Progressive Web Apps Are The Future of Mobile Web (2019 Research).
- Progressive Web Apps: Everything You Need To Know
- Collection of resources, codelabs and tools you need to build PWAs by the team at pwafire.org
- Setting up your Progressive Web App Development environment