Book Image

AMP: Building Accelerated Mobile Pages

By : O'Donoghue
Book Image

AMP: Building Accelerated Mobile Pages

By: O'Donoghue

Overview of this book

Google introduced the Accelerated Mobile Pages (AMP) project to give mobile users lightning-fast response times when accessing web pages on mobile devices. AMP delivers great user experiences by providing a framework for optimizing web pages that otherwise would take much longer to load on a mobile platform. This book shows how to solve page performance issues using the mobile web technologies available today. You will learn how to build instant-loading web pages, and have them featured more prominently on Google searches. If you want your website to succeed on mobile, if you care about SEO, and if you want to stay competitive, then this book is for you! You will go on a mobile web development journey that demonstrates with concrete examples how to build lightning-fast pages that will keep your visitors on-site and happy. This journey begins by showing how to build a simple blog article-style web page using AMP. As new concepts are introduced this page is gradually refined until you will have the skills and confidence to build a variety of rich and interactive mobile web pages. These will include e-commerce product pages, interactive forms and menus, maps and commenting systems, and even Progressive Web Apps.
Table of Contents (17 chapters)
14
Actions and Events
16
amp-bind Permitted Attribute Bindings

Using responsive layout


Responsive design is built directly into AMP, and is one of the most useful layouts offered by the layout attribute. We saw how to use amp-img with the responsive layout in our news article example from the last chapter:

<amp-img
  src="img/feature.jpg"  
  width="768"
  height="305"
layout="responsive" >
</amp-img>

Note that even though we are using the responsive layout, we still need to specify the width and height attributes. Shouldn't it just grow and shrink to fit the viewport? There are two reasons why the width and height attributes are needed:

  1. To calculate the aspect ratio of the image so that it is displayed correctly as it is resized.
  2. To calculate the page layout before anything is downloaded; this is required by AMP's static layout system.

Our example from the last chapter was a nice first attempt at a news article page, but there's a problem with it. It's not optimized for larger screens. When viewed on a larger screen, the main feature image becomes...