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Case Study: How Symantec is showing its visitors the wrong content first
In my post on how to read waterfall charts, I touched on the importance of knowing how quickly a page starts to render, because this can have a powerful effect on a visitor’s perception of your site’s...
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Travelocity makes a good tool even better with new script for Webpagetest
Chances are you already know that, in order to get a real sense of how your site performs, you need to test it using tools that simulate the real-world end-user experience. I talked about this a couple...
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Web Performance Consulting: Five questions for Andrew King
In the past month, I’ve had three major corporations ask for my opinion about independent web performance consulting: What is it? Is it worthwhile? How do you find a good consultant? I decided to take...
View ArticleDelivering Performance: How does your content management system score?
Last week, I was talking with a client who is on the hunt for a ASP.NET-based CMS, and he asked me what I know about how content management systems affect site speed. It’s a really good question. As a...
View ArticleYou are the worst judge of your web site’s performance. Here’s why.
After writing about VCs and load time benchmarks a couple of days ago, I was struck by this comment made by Fred Wilson, which I kind of glossed over the first few times I read it: “I think that power...
View ArticleTechCrunch: The slowest tech blog, or one of the fastest? Turns out, it’s both.
When I started writing this post, my intent was to do a bit of performance benchmarking for leading tech blogs. But what started off as a standard benchmarking exercise turned into a great opportunity...
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Three kinds of web page test visuals, and the best ways to use them
With Black Friday around the corner (or happening right now, if you want to jump the gun), what kind of performance blog would this be if it didn’t subject a bunch of leading ecommerce sites to some...
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New findings: Median ecommerce page has slowed down by 21% in the past year
It’s the first quarter of 2014, which means it’s time for Radware’s quarterly state of the union for ecommerce web performance. The full report is available for download, but first, here’s a high-level...
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Waterfalls 101: How to use a waterfall chart to diagnose your website’s...
If you’ve been following along with this site over the past four years, you may recallthis post, which offered an introduction to waterfall charts. Given that the post is now a few years old, I think...
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Can third-party scripts take down your entire site? [SLIDES]
Last week, I had the great privilege of presenting an O’Reilly webcast as part of the lead-up to Velocity Santa Clara. The catch was that I didn’t want to give away what I’ll be presenting at Velocity,...
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