The PerformanceObserver interface is used to observe performance measurement events and be notified of new performance entries as they are recorded in the browser's performance timeline.

Using Google's Chrome User Experience (CrUX) data, you can instantly generate a RUM benchmark report to see how your site compares to the top performing sites in your industry.

At The Telegraph we’re currently going through a process of rebuilding our public-facing website. This gives us the opportunity to take…

Optimizing for mobile performance can improve SEO as well as increase conversions. Making a mobile friendly website has many benefits.

Images are a crucial component for successful conversions: they evoke emotions, build trust and prompt action. They also form 2/3rds of our website’s weight & have a high correlation to page load…

WEDNESDAY 15TH OF MAY 2019 Our third party metrics and dashboard have had an exciting revamp. With new metrics like blocking CPU, you can now see exactly who is really to blame for a crappy user…

This talk will provide strong guidance on how to effectively assess and optimize site performance. In collaboration with the Search Console Team, the session...

Advancing the start of the art of HTTP/2 to deliver a faster user experience. See why it matters and how much of a difference it can make.

* Measurements represent transferred file size.A budget.json file can be used with the Lighthouse CLI to set performance budgets.

While looking at a WebPageTest waterfalls, I often come across surprising attributes. A few weeks back, I came across a page that had images with a familiar file naming convention: This website is…

Even as many aspects of the digital divide in the U.S. have narrowed, the digital lives of lower- and higher-income Americans remain markedly different.

Progressive web apps may soon free you from Google Play and the iOS App Store