October 2017
Intermediate to advanced
370 pages
8h 57m
English
Content preview from AMP: Building Accelerated Mobile Pages
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WebPagetest.org
WebPagetest is one of the best online tools for testing web page performance. It's an open source project that generates waterfall charts and allows you to test on (a limited number of) real devices and browsers, and on a variety of network types and qualities, from various locations around the globe. It's free to use, and you can find it here: webpagetest.org.
WebPagetest also reports the number of requests by type and size, and gives a film-strip snapshot visualization of the render progress. It also allows you to replay a video of the page as it rendered during the test.
In the following image we can see a portion of the performance output for our news page:
Waterfall report for our AMP page in WebPagetest.org
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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