In 2026, Core Web Vitals remain a key page experience and SEO quality signal. Pune websites with poor scores often struggle with mobile engagement, rankings and conversions. Here is the technical guide to get your LCP, CLS and INP into the "Good" range and build faster service pages, landing pages and eCommerce pages.
The Three Core Web Vitals Every Pune Website Should Track
- LCP (Largest Contentful Paint): How quickly your largest above-the-fold element loads. Target: under 2.5s
- CLS (Cumulative Layout Shift): How much your page layout shifts unexpectedly. Target: under 0.1
- INP (Interaction to Next Paint): How fast your page responds to user interactions. Target: under 200ms
How to Fix LCP (Largest Contentful Paint)
LCP is almost always your hero image or H1 heading. The fixes:
- Add
priorityto your heronext/imagecomponent - Preload your LCP image with
<link rel="preload"> - Use AVIF or WebP format (50–70% smaller than JPEG)
- Serve images from a CDN (Vercel, Cloudflare, or CloudFront)
- Reduce server response time - use Vercel Edge Functions or cache your pages
- Remove render-blocking CSS and JavaScript
The single biggest LCP win we see: switching from unoptimized PNG hero images to WebP with proper preloading. Average LCP improvement: 1.8 seconds.
How to Fix CLS (Cumulative Layout Shift)
- Always set explicit width/height on images and video elements
- Reserve space for ads and embeds with CSS aspect-ratio
- Avoid inserting content above existing content (popups, banners)
- Use
font-display: optionalfor web fonts to avoid FOUT (Flash of Unstyled Text) - Preload critical fonts in your
<head>
How to Fix INP (Interaction to Next Paint)
- Reduce JavaScript bundle size - code split with dynamic imports
- Move heavy computations to Web Workers
- Debounce and throttle event handlers
- Defer non-critical third-party scripts (chat widgets, analytics)
- Use React
useTransitionfor non-urgent state updates
