Core Web Vitals for Indian Websites — LCP, INP, CLS Explained with Fixes

What are Core Web Vitals?

Core Web Vitals are Google's performance metrics used as a ranking factor: Largest Contentful Paint (LCP) — how fast the main content loads (target < 2.5s), Interaction to Next Paint (INP) — how responsive the page is to user input (target < 200ms), Cumulative Layout Shift (CLS) — visual stability (target < 0.1).

Common LCP Issues for Indian Sites

The most common LCP problems for Indian business websites: large hero images not optimised (use WebP format, add width/height attributes), fonts loaded without display:swap (blocking render), server response time slow (cheap hosting), and large unused JavaScript bundles.

Fixing CLS (Layout Shift)

CLS issues are typically caused by: images without explicit width and height (browser can't reserve space), web fonts causing text reflow (use font-display: swap), ads or embeds (reserve space with fixed containers), and dynamically injected banners/notifications. Always set explicit dimensions on media elements.

Tools to Measure

Use Google PageSpeed Insights (free, shows field data from Chrome UX Report), Lighthouse in Chrome DevTools (lab data), and Chrome User Experience Report (CrUX) in Google Search Console for real-user data. Measure on both mobile and desktop — mobile is what Google uses for ranking.

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