Progressive Web Apps
Dean Alan Hume
  • MEAP began December 2016
  • Publication in Summer 2017 (estimated)
  • ISBN 9781617294587
  • 275 pages (estimated)
  • printed in black & white

Progressive Web Apps are game changers. They let you create fast, resilient applications that benefit users regardless of their connection speed or device constraints. PWAs are built with a collection of technologies, design concepts, and Web APIs that work in tandem to provide an app-like experience on the mobile web. This means you can build reliable web apps that load nearly instantly no matter what kind of network connection the user is on. PWAs run on HTTPS, use push notifications, and spawn app install banners. Under the hood, PWAs allow you full access to requests and responses made to and from the applications - giving you ultimate control. And the best part - you don't need to be a guru to unlock all of these powerful features.

Progressive Web Apps takes you, step-by-step, through real world examples and teaches you how to build fast, engaging, and reliable websites. You'll begin by getting the big picture of what Progressive Web Apps are, how they work, and their benefits. Then you'll explore the different approaches that you can use to build them. This hands-on guide gives you a closer look as you dissect a real-world PWA and break down each of its elements. As you progress, you'll dive into each of the key features that make up a Progressive Web App. This book is written with stand-alone chapters, letting you learn about particular features of interest without having read previous chapters. By the end, you'll be ready to build better web applications and improve the user experience.

Table of Contents detailed table of contents

Part 1: Defining Progressive Web Apps

1. Understanding Progressive Web Apps

1.1. What's the big deal with Progressive Web Apps?

1.1.1. The basics

1.1.2. Building a business case for Progressive Web Apps

1.2. Service Workers: The key to Progressive Web Apps

1.2.1. Understanding Service Workers

1.2.2. The Service Worker Lifecycle

1.2.3. A basic Service Worker example

1.2.4. Security Considerations

1.3. Performance Insight: Flipkart

1.4. Summary

1.5. References

2. The first steps toward building a Progressive Web App

2.1. Architectural approaches to building PWA's

2.1.1. Pick and choose your vitamins

2.1.2. Application Shell Architecture

2.2. Dissecting an existing PWA: step by step

2.2.1. Front end Architecture

2.3. Summary

2.4. References

Part 2: Faster Web Apps

3. Caching

3.1. The basics of HTTP caching

3.2. The basics of caching using Service Workers

3.2.1. Precaching during Service Worker installation

3.2.2. Intercept and cache

3.2.3. Putting it all together

3.3. A performance comparison: before and after caching

3.4. Diving deeper into Service Worker caching

3.4.1. Versioning your files

3.4.2. Dealing with extra query parameters

3.4.3. How much memory do you need?

3.4.4. Taking caching to the next level - The Service Worker toolbox

3.5. Summary

3.6. References

4. Intercepting Network Requests

4.1. The Fetch API

4.2. The Fetch Event

4.2.1. The Service Worker Lifecycle

4.3. Fetch in action

4.3.1. An example using WebP images

4.3.2. An example using the Save-Data header

4.4. Summary

4.5. References

5. Look and feel

6. Push Notifications

Part 3: Resilient Web Apps

7. Offline browsing

8. Building more resilient applications

9. Keeping your data synchronised

Part 4: The future of Progressive Web Apps

10. Streaming data

11. The future is looking good

What's inside

  • Building super fast web applications
  • Adding improved caching using Service Workers
  • Using manifest files and HTML markup
  • Engaging users with push notifications
  • Building an offline web application from scratch
  • Keeping data synchronized even when users are offline

About the reader

Readers should have some experience with developing websites using HTML, CSS and JavaScript.

About the author

Dean Alan Hume is an author, blogger and Google Developer Expert. He is passionate about web performance and regularly writes articles about this topic on his blog at

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