Core Web Vitals
Core Web Vitals are Google's three metrics for measuring how fast and smooth your website feels to visitors. They affect your search rankings.
Core Web Vitals are three specific measurements Google uses to judge how your website performs for real visitors. They track how fast your page loads, how quickly it responds when someone clicks something, and whether the layout jumps around while loading.
Google started using these metrics as a ranking factor in 2021. Sites that score well get a small boost in search results. More importantly, sites that score poorly give visitors a frustrating experience, and frustrated visitors leave.
Why It Matters for Your Business
A 1-second delay in page load time can reduce conversions by 7%. Google found that 53% of mobile visitors abandon a site that takes longer than 3 seconds to load. Core Web Vitals are Google's way of measuring exactly this kind of experience. If your site is slow or janky, you're losing visitors and ranking lower at the same time.
The Basics
LCP (Largest Contentful Paint). This measures how long it takes for the biggest piece of content on your page to show up. Usually that's a hero image or a large block of text. Google wants this under 2.5 seconds. If your main image takes 5 seconds to appear, visitors are staring at a half-loaded page.
INP (Interaction to Next Paint). This replaced the old FID metric in 2024. It measures how fast your site responds when someone taps a button, clicks a link, or types in a form. Google wants this under 200 milliseconds. If there's a noticeable lag between clicking and something happening, that's a bad INP score.
CLS (Cumulative Layout Shift). This measures how much your page layout moves around while loading. Ever try to tap a button on your phone, but then an ad loads and pushes everything down, and you tap the wrong thing? That's layout shift. Google wants this score below 0.1.
How to check your scores. Go to pagespeed.web.dev and enter your website URL. Google will show you your Core Web Vitals scores along with specific suggestions for improvement. You can also check in Google Search Console under the "Core Web Vitals" report.
FAQ
What are Core Web Vitals in simple terms?
They're three scores Google gives your website based on speed and user experience. LCP measures loading speed, INP measures how fast buttons and links respond, and CLS measures whether things jump around on screen. Green is good, red is bad.
Do I need to worry about Core Web Vitals for my small business website?
You should at least check your scores. If they're in the green, you're fine. If they're in the red, it means your website is giving visitors a poor experience, and Google is ranking you lower because of it. The fixes are usually straightforward: compress images, use good hosting, and avoid loading too many scripts.
How much does it cost to fix Core Web Vitals?
It depends on the problem. Sometimes it's as simple as compressing a few large images, which is free. Other times it requires a developer to optimize your site's code, which could run a few hundred to a few thousand dollars depending on the complexity. Start with the free PageSpeed Insights tool to see what needs fixing.