Slow pages lose rankings and sales. Use this practical Core Web Vitals guide to improve LCP, INP, and CLS for stronger SEO performance.
Core Web Vitals remain a critical Google ranking signal. If your site feels slow or unstable, both SEO and conversion rates suffer.
What to measure: LCP, INP, and CLS
Largest Contentful Paint (LCP) tracks load speed of the main content. Interaction to Next Paint (INP) measures responsiveness. Cumulative Layout Shift (CLS) tracks visual stability.
Page speed optimization checklist
- Compress and lazy-load images (WebP/AVIF)
- Defer non-critical JavaScript and CSS
- Use a CDN and modern hosting
- Reserve space for ads, fonts, and embeds to prevent layout shift
- Audit third-party scripts that hurt INP
Technical SEO payoff
Faster sites improve crawl efficiency, reduce bounce rate, and increase engagement—signals that support organic growth. Pair Core Web Vitals work with on-page SEO for the best results.