Core Web Vitals Checklist for 2026

Core Web Vitals are one useful part of technical SEO quality. LCP, CLS, and INP help teams understand whether pages feel fast, stable, and responsive enough for real users.

Common LCP issues: unoptimized hero images, render-blocking JS, slow TTFB. CLS issues: ads, embeds, images without dimensions.

A safe audit should separate measured lab data, field data, and missing provider inputs so teams know which fixes are evidence-backed and which need more validation.