The Cost of Javascript Frameworks - Web Performance Consulting | TimKadlec.com
There is no faster (pun intended) way to slow down a site than to use a bunch of JavaScript. The thing about JavaScript is you end up paying a performance tax no less than four times: The cost of downloading the file on the network The cost of parsing and compiling the uncompressed file once downloaded The cost of executing the JavaScript The memory cost The combination is very expensive. And we a
Media Queries within SVG - Web Performance Consulting | TimKadlec.com
There has been a lot of interesting chatter regarding SVG as of late, including thorough posts by David Bushell and Chris Coyier. One aspect in particular that is getting quite a bit of attention is the ability to embed media queries within SVG files. Even more amazing is the fact that this was first talked about by Andreas Bovens of Opera all the way back in 2009! The renewed interest in the tech
How Fast Is Amp Really? - Web Performance Consulting | TimKadlec.com
AMP has caused quite the stir from a philosophical perspective, but the technology hasn’t received as close of a look. A few weeks ago, Ferdy Christant wrote about the unfair advantage being given to AMP content through preloading. This got me wondering: how well does AMP really perform. I’ve seen folks, like Ferdy, analyze one or two pages, but I hadn’t seen anything looking at the broader pictur
Why we need responsive images - Web Performance Consulting | TimKadlec.com
The topic of responsive images has been one of the most hotly debated topics amongst web developers for what feels like forever. I think Jason Grigsby was perhaps the first to publicly point out that simply setting a percentage width on images was not enough, you needed to resize these images as well. He showed that if you served appropriately sized images on the original responsive demo site, you
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A/B Testing Instant.Page With Netlify and Speedcurve - Web Performance Consulting | TimKadlec.com
On HTTPS and Hard Questions - Web Performance Consulting | TimKadlec.com
Choosing performance - Web Performance Consulting | TimKadlec.com
Why RWD looks like RWD - Web Performance Consulting | TimKadlec.com
