October 2015
Beginner
214 pages
4h 30m
English
Content preview from Using WebPageTest
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Foreword
I have many tools in my web performance toolkit. Chrome DevTools is my goto for inbrowser performance analysis. I use the PageSpeed Insights and YSlow extensions for converting performance observations into actions. I love bookmarklets, especially for doing performance analysis in mobile browsers. The websites I run are monitored using several RUM and synthetic performance measurement services.
But I rely on WebPageTest more than all of these other tools combined. Why?
You can run WebPageTest from anywhere. It doesn’t require installing anything, all you need is a browser. I’ve frequently run an analysis of someone’s website in IE from China on my iPhone and shown them the results midconversation. They’re amazed, and I have to swing the conversation from explaining how such a powerful analysis can be done so quickly on my phone to what they need to do to make their website faster.
WebPageTest makes it easy to save and share results. When analyzing performance, it’s often hard for one person to convey their experience to other team members. Sharing a WebPageTest URL ensures that everyone is looking at the same experience. This is especially helpful in bug reports. Since results are never deleted, it’s possible to go back to review performance problems in older browsers and previous versions of the website.
WebPageTest covers a wide range of performance metrics. It has waterfall charts with the associated request and response headers. It has timing metrics including time ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.