How to Fix Core Web Vitals for Indian Websites 2025 | LCP, INP & CLS Guide

Core Web Vitals are Google's user experience ranking signals that measure how fast, responsive, and visually stable your website is. Poor Core Web Vitals directly harm your Google rankings. Indian websites face particular challenges because most visitors access websites on mobile devices over 4G connections — making performance optimization even more critical. The three Core Web Vitals: LCP (Largest Contentful Paint): measures loading performance

Target under 2.5 seconds. INP (Interaction to Next Paint): measures interactivity. Target under 200 milliseconds. CLS (Cumulative Layout Shift): measures visual stability

Target under 0.1. Fixing LCP (most common issue): The most common LCP elements are hero images, H1 headings, and above-the-fold text blocks. Fix slow LCP by: converting hero images to WebP format (50-70% smaller than JPEG/PNG), adding explicit width and height attributes to image elements to prevent layout shifts, using the 'loading=eager' attribute on hero images (not 'lazy'), implementing a CDN (Cloudflare is free), and upgrading to a better hosting provider if Time to First Byte (TTFB) exceeds 800ms. Fixing CLS: Layout shifts are caused by images without dimensions, ads injected after content loads, fonts that change text size on load, and dynamic content inserting above existing content

Fix: always specify width and height on all images and video elements, use font-display: optional or font-display: swap for web fonts, pre-allocate space for ads and dynamic content. Fixing INP: Poor interactivity is caused by excessive JavaScript execution on the main thread. Fix: remove unused JavaScript, defer non-critical scripts, code-split large bundles, and use passive event listeners for scroll events. Tools to measure Core Web Vitals: Google PageSpeed Insights (field data from real users), CrUX dashboard in Google Search Console, and the Chrome DevTools Performance tab

Sintech Solutions provides Core Web Vitals optimization as part of technical SEO services.