What are Google Core Web Vitals
Core Web Vitals is Google’s method of formalizing three metrics as important to UX:
Largest Contentful Paint (LCP): This measures how long it takes for the largest element on the screen to load once a user navigates to a URL – a loading performance metric.
First Input Delay (FID): The time it takes between a user clicking an interactive element and the browser responding to it – a measure of the interactivity of your web page.
Cumulative Layout Shift (CLS): This metric returns the sum total of any ‘layout shifts’ during a page’s lifespan – whenever your page’s elements change position. This is a visual stability metric looking at how elements of the page are loaded and rendered.
To summarize, Core Web Vitals are a set of metrics that form part of Google’s UX analysis when it comes to ranking a site for search.
You can see Google Core Web Vitals metrics for your site in Google Search Console and also by using the Google page speed insights tool. You can see if your pages are categorized as “poor URLs”, “URLs need improvement” or “good URLs.”
In our opinion, PageSpeed Insights provides the best and most straightforward way to test Core Web Vitals. Once you input your domain name and begin the analysis, you’ll get a report showing the field data at the top and the Core Web Vitals marked with a blue ribbon icon:
