If your website loads slowly or feels janky, you are not just frustrating users — you are actively hurting your Google rankings. Core Web Vitals have been a direct ranking factor since 2021, and in 2026 they are weighted more heavily than ever.
What Are Core Web Vitals?
- Largest Contentful Paint (LCP): How long it takes for the main content to load. Target: under 2.5 seconds.
- Interaction to Next Paint (INP): How responsive the page is to user interactions. Target: under 200 milliseconds.
- Cumulative Layout Shift (CLS): How much the page layout shifts unexpectedly. Target: under 0.1.
How to Measure Your Scores
Start with Google PageSpeed Insights at pagespeed.web.dev. Enter your URL and get both lab scores and real user field data. Google Search Console also shows Core Web Vitals data for your entire site.
How to Improve LCP
- Use modern image formats — WebP or AVIF — instead of PNG or JPG
- Add
fetchpriority="high"to your above-fold hero image - Use a CDN to serve assets from servers close to your users
- Eliminate render-blocking scripts in your page head
How to Improve INP
- Break up long JavaScript tasks into smaller chunks
- Defer non-critical JavaScript
- Avoid heavy third-party scripts that block the main thread
How to Improve CLS
- Always specify width and height attributes on images
- Reserve space for ads and embeds before they load
- Preload your web fonts to prevent layout shift
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