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
Frequently Asked Questions
What are Core Web Vitals?
Core Web Vitals are a set of specific factors that Google considers important in a webpage's overall user experience, consisting of LCP (loading), INP (interactivity) and CLS (visual stability).
What does LCP stand for and how is it measured?
LCP stands for Largest Contentful Paint. It measures how long it takes for the largest element (usually an image or text block) visible above the fold to fully render. A good score is under 2.5 seconds.
What is CLS and why does it matter?
CLS stands for Cumulative Layout Shift. It measures unexpected layout shifts during page load (like buttons moving just as you try to click them). It matters because high CLS frustrates users. A good score is under 0.1.
How has INP replaced FID?
INP (Interaction to Next Paint) replaced FID (First Input Delay) in 2024. INP is more comprehensive, measuring the latency of all interactions (clicks, taps) throughout the entire lifespan of a user's visit, not just the first one.
Do Core Web Vitals directly impact SEO rankings?
Yes, Google has confirmed that Core Web Vitals are an official ranking signal. While great content is still king, poor Web Vitals will cause you to lose rankings to competitors with similar content but better performance.
How can I improve my LCP score?
Improve LCP by preloading your hero image, using modern image formats like WebP, implementing a CDN, removing render-blocking CSS/JS and upgrading to a faster hosting environment.
What causes a poor CLS score?
Poor CLS is typically caused by images or ads without defined width and height dimensions, dynamically injected content (like popups), or web fonts that cause the text layout to change upon loading.
How do I fix a high INP score?
Fix INP by reducing JavaScript execution time, breaking up long tasks, code-splitting your JS bundles and optimizing third-party scripts that block the main thread.
What tools can I use to measure Core Web Vitals?
You can measure them using Google PageSpeed Insights, Google Search Console (Core Web Vitals report), Lighthouse and the Chrome User Experience Report (CrUX).
Why is my mobile PageSpeed score lower than desktop?
Mobile scores are usually lower because Google simulates the test on a slower 4G connection and a mid-tier mobile processor, making JavaScript execution and image loading much heavier than on desktop.
Does using Next.js improve Core Web Vitals?
Yes, modern frameworks like Next.js automatically optimize images, provide server-side rendering and handle code-splitting, making it much easier to achieve perfect Core Web Vitals scores.
Can Growthik Media help improve my website's speed?
Yes, our development team specializes in technical SEO and performance optimization, consistently achieving 90+ PageSpeed scores and passing Core Web Vitals for our clients.
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