Monthly archives: May, 2019

Web Performance Metrics – Demos

I decided to create notes and demos about web performance metrics that sometimes I have problem to explain and understand. First input delay: First Input Delay (FID) measures the time from when a user first interacts with your site to the time when the browser is actually able to respond to that interaction. Source:¬†https://developers.google.com/web/updates/2018/05/first-input-delay I …