CSS Wizardry

JULY 23, 2023

In March 2024, First Input Delay (FID) will be removed, and Interaction to Next Paint (INP) will take its place. You Don’t Need to Pass FID You don’t need to pass First Input Delay. While rare, it is possible that a URL’s FID data will read Not enough data. Until then, INP is not a part of Core Web Vitals.

Engineering 246

Engineering Google Speed Mobile 246

Smashing Magazine

MAY 17, 2021

Google bins experiences into “Good”, “Needs Improvement”, and “Poor” based on the LCP, FID, and CLS scores real people have on the site: LCP , or Largest Contentful Paint, defines the time it takes for the largest content element to become visible. A summary of LCP, FID and CLS. We saw that the way Next.js

Google 95

Google Analytics Serverless Metrics 95

Speed Curve

JULY 31, 2023

Example of CLS sessions windows from web.dev By introducing a session window, Google reduced the impact of the SPA problem. A new session starts if there is a gap of more than 1s between layout shifts. At the end of the page lifespan, the session window with the highest total layout shifts becomes CLS.

Google 52

Google Metrics Testing Performance 52

Smashing Magazine

AUGUST 3, 2023

First Input Delay (FID) Assesses the time it takes for a page to become interactive. Image source: web.dev ) ( Large preview ) While optimizing for FID and CLS was relatively straightforward, LCP posed a greater challenge due to the multiple factors involved. Core Web Vital metrics definitions.

Performance 74

Performance Cache Traffic Metrics 74

Smashing Magazine

MARCH 25, 2021

A performance budget as a mechanism for planning a web experience and preventing performance decay might consist of the following yardsticks: Overall page weight, Total number of HTTP requests, Page-load time on a particular mobile network, First Input Delay (FID). For more insight, see this Web.dev article. Serve the right format.

Media 118

Media Performance Mobile Latency 118

Smashing Magazine

APRIL 29, 2021

First Input Delay (FID) is a Core Web Vitals metric that captures a user’s first impression of a site’s interactivity and responsiveness. By reducing main-thread CPU usage, FID can also be reduced. Lighthouse. In this guide, we will be using Lighthouse to identify opportunities to improve the Core Web Vitals. vf, yk, il).

Media 145

Media Network Metrics Mobile 145

Smashing Magazine

JANUARY 11, 2021

Getting Ready: Planning And Metrics Performance culture, Core Web Vitals, performance profiles, CrUX, Lighthouse, FID, TTI, CLS, devices. First Input Delay (FID) , or Input responsiveness 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.

Performance 145

Performance Cache Media Metrics 145