Dan Shappir

The ins and outs of Core Web Vitals

Ever since Google announced the webpage performance, as measured by Core Web Vitals (CWV) is a ranking factor starting May 2021, it has become the de-facto standard for measuring performance on the web. But while they seem straightforward, it turns out the CWV are anything but. In this talk we will dive into the technical details of CWV, and understand what they actually measure, and how they themselves are measured. What you learn in this talk will definitely surprise you!

Dan Shappir is the Performance Tech Lead at Wix.com, focusing on making more than 100 million websites hosted on the Wix platform load and execute faster. Dan has over 25 years of software development, and has worked on systems ranging from multi-user games to missile trajectory simulations to designing and building large-scale Web apps. He is a frequent speaker at technical conferences, a panelist on the JavaScript Jabber podcast, and a member of the Google Chrome Advisory Board (CAB). Dan holds an M.Sc. in Computer Science.