Viewing profile — zeman

Can I just check, do you use Edge browser? We've (SpeedCurve) been seeing some issues where Edge goes bonkers and makes thousands of requests to our CDN and fails to load CSS which…

It's amazing how few sites are using these techniques to measure their user experience. Less than 1% of sites in the HttpArchive.

At SpeedCurve we've built something similar for tracking and understanding the impact on website performance that third party requests can have. It's a big issue for websites when …

You can see more of my performance data visualizations (like PerfMap) in a recent talk I gave at Velocity NY. http://speedcurve.com/blog/velocity-a-better-waterfall-chart...

SpeedCurve is proving to be very profitable for a side project. Paid back initial $3k investment in server costs and now growing at 32% month on month. Can't live on it yet, but it…

On the responsive performance side of things, I've been building a tool to help track build differences and load performance across different viewport widths. Demo for The Guardian…

Should've mentioned this is a free high quality online "ebook" from Ilya Grigoriky. He's a performance wizz kid!

Interesting to see the monitoring tools in place... New Relic, Mixpanel and Chartbeat. Would like to have seen more detail included from these, seem to be focused on backend. Where…

It's worth adding above the fold (ATF) rendering as a technique. It's aim is to deliver pages on mobile within 1 second and requires a fundamental rethink of the way we architect C…