Core Web Vitals are a set of Google metrics that measure key aspects of real-world page experience, including loading performance, interactivity, and visual stability. The three current Core Web Vitals are Largest Contentful Paint (LCP), Interaction to Next Paint (INP), and Cumulative Layout Shift (CLS), which help assess how quickly, responsively, and reliably a webpage performs for users.
As we know, Google’s goal is always to display the most relevant results in a search and guarantee the best possible user experience in terms of navigation and speed, which is why in 2021 core web vitals will officially become a ranking factor.
Which web vitals are considered core
There are several parameters to measure the quality of a user’s navigation experience on a website, but those considered essential by Google are three:
- Largest Contentful Paint (LCP)
First Input Delay (FID)Interaction to Next Paint (INP)- Cumulative Layout Shift (CLS)
LCP (Largest Contentful Paint) is how long it takes a page to load from the point of view of an actual user.
In other words: it’s the time from clicking on a link to seeing the majority of the content on-screen.
FID (First Input Delay) is the time it takes for a user to actually interact with your page.
Examples of interactions include:
- Choosing an option from a menu
- Clicking on a link in the site’s navigation
- Entering your email into a field
- Opening up “accordion text” on mobile devices
From March 2024, the FID metric for responsiveness has been replaced by INP (Interaction to Next Paint).
Interaction to Next Paint (INP) measures how quickly a page responds to user interactions. INP observes the latency of all interactions a user has made with the page, and reports a single value which all (or nearly all) interactions were below. Optimizing INP is an involved process, requiring knowledge of various aspects that drive interactivity.
CLS (Cumulative Layout Shift) is how stable a page is as it loads (aka “visual stability”).
In other words; if elements on your page move around as the page loads, then you’ve got a high CLS. This is considered a bad thing in Google’s eyes.
How to measure core web vitals
To date, the performance of a site can be measured using:
- PageSpeed Insights
- Lighthouse
- Search Console
- Chrome UX Report
- Chrome DevTools
- Web Vitals Extension
How to improve core web vitals
Web core vitals can be improved by working on various internal aspects of the site, eg, programming code, resource size, number of resources, and many more criteria.
At 4Sight Group we have a team of SEO experts and developers able to improve the performance of your website and ensure it’s appreciated by Google, and its users, in such a way as to rank itself within the first search results.
Contact us today to get your website ranking to the newest standards – we’re always here to help!
FAQs
What are the three Core Web Vitals?
The three current Core Web Vitals are Largest Contentful Paint (LCP), Interaction to Next Paint (INP), and Cumulative Layout Shift (CLS). Together, they measure loading performance, responsiveness to user interactions, and visual stability.
Are Core Web Vitals still a Google ranking factor?
Yes, Core Web Vitals are part of Google’s page experience signals and can contribute to how Google evaluates a webpage. However, meeting the recommended thresholds does not guarantee higher rankings, because Google uses many other ranking systems and signals.
What is a good Core Web Vitals score?
A good Core Web Vitals result means achieving Google’s recommended thresholds for LCP, INP, and CLS based on real-user data. Generally, this means an LCP of 2.5 seconds or less, an INP of 200 milliseconds or less, and a CLS score of 0.1 or less.
What is the difference between FID and INP?
FID measured the delay before a page responded to a user’s first interaction, while INP evaluates the responsiveness of interactions throughout the user’s visit. Google replaced FID with INP as a Core Web Vital in March 2024, making INP the current metric for measuring page responsiveness.
Can improving Core Web Vitals improve SEO?
Improving Core Web Vitals can contribute to a better page experience and may support SEO performance, particularly when combined with relevant, high-quality content and other technical SEO best practices. Core Web Vitals should therefore be treated as one component of a broader SEO strategy rather than as a standalone ranking factor.
