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Web Performance in Action: Building Fast Web Pages by Jeremy L. Wagner

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Chapter 2. Using assessment tools

This chapter covers

  • Using Google PageSpeed Insights
  • Using network request inspectors to view timing information for assets
  • Using rendering profilers to diagnose poor performance
  • Benchmarking JavaScript code
  • Emulating devices and internet connections

Now that you have a handle on the idea of web performance and have had a chance to optimize a client’s site, it’s time to go deeper. That starts with learning about tools that identify performance issues. These exist both online and in the browser, starting with Google’s PageSpeed Insights, and ending with the tools available in Chrome and other desktop browsers.

2.1. Evaluating with Google PageSpeed Insights

It won’t surprise you to know that Google cares ...

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