Slow websites lose visitors and rankings. Here is what Google's Core Web Vitals actually measure, the scores you should aim for, and the fixes that make the biggest difference.
Your visitors don't care about your hosting plan or your theme. They care about how fast the page appears and how smoothly it responds. Google captures that experience in three metrics called Core Web Vitals. They are part of Google's page experience signals, and they directly affect how many visitors stay long enough to become customers.
The three Core Web Vitals
| Metric | What it measures | Good score |
|---|---|---|
| LCP: Largest Contentful Paint | How quickly the main content (usually the hero image or headline) appears | 2.5 seconds or less |
| INP: Interaction to Next Paint | How quickly the page responds when someone taps or clicks | 200 milliseconds or less |
| CLS: Cumulative Layout Shift | How much the layout jumps around while loading | 0.1 or less |
INP replaced the older FID (First Input Delay) metric in 2024, because it measures responsiveness across the whole visit, not just the first tap.
How to check your scores
- PageSpeed Insights (pagespeed.web.dev): enter a URL to see real-user data (if available) and lab diagnostics.
- Google Search Console: the Core Web Vitals report groups your URLs into Good, Needs improvement and Poor.
- Chrome DevTools > Lighthouse: useful for debugging while developing.
Always look at the mobile results. Your customers mostly browse on phones over mobile data, and that's where problems show up.
Fixing slow LCP
- Compress and resize hero images, and serve WebP or AVIF.
- Don't lazy-load the main hero image. Lazy-load everything below the fold instead.
- Use good hosting with server-side caching and a CDN.
- Reduce render-blocking CSS and JavaScript, and load fonts efficiently.
Fixing poor INP
- Cut unused JavaScript, especially heavy sliders, chat widgets and tracking scripts.
- Defer non-critical scripts until after the page is interactive.
- Break long JavaScript tasks into smaller chunks.
- Audit plugins. On WordPress, a handful of heavy plugins is often the culprit.
Fixing high CLS
- Always set width and height (or aspect-ratio) on images, videos and iframes.
- Reserve space for ads, banners and embeds before they load.
- Avoid inserting pop-ups or notices above existing content.
- Use
font-display: swapcarefully and preload key fonts.
Why it matters beyond SEO
Speed is about revenue as much as rankings. A faster page means fewer people hit "back" and more people see your offer, fill your form or complete checkout. That matters even more when you're paying for every click through Google Ads.
Quick win: On most small business sites, simply compressing images and removing two or three unused plugins or scripts produces a visible improvement in a single afternoon.
Every website we build is tuned for Core Web Vitals from day one. If your current site is slow, our team can audit and fix it. See our SEO packages or request a speed audit.
Want results like these for your business?
Talk to Brute Corp about your website, SEO or marketing. The first consultation is free.
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