Quick targets (good): LCP ≤ 2.5s • INP ≤ 200ms • CLS ≤ 0.1
Start with your top 5 landing pages (home, service pages, high-traffic blogs).

Table of Contents

What Core Web Vitals measure (simple)

  • LCP = how fast the main content loads (hero image/text).
  • INP = how fast the page responds when users click/tap/type.
  • CLS = how stable the page is (no jumping layouts).

Audit workflow (10–20 minutes)

  1. Pick 5 URLs: home + top services + top blog posts + landing page.
  2. Run Lighthouse (mobile first) and note LCP/INP/CLS + “opportunities”.
  3. Check real-user data if available (Search Console CWV report / analytics RUM).
  4. Identify the main LCP element (usually hero image, H1 block, banner).
  5. List top 3 blockers: images, JS, fonts, server response, third-party scripts.

Free CWV checklist (copy-paste)

General (applies to all CWV)

  1. ✅ Use CDN for static assets (images/CSS/JS).
  2. ✅ Enable gzip/brotli compression.
  3. ✅ Turn on HTTP/2 or HTTP/3.
  4. ✅ Cache pages/assets (server + browser caching).
  5. ✅ Reduce third-party scripts (chat widgets, heatmaps, extra tags).

LCP checklist

  1. ✅ Compress hero images (WebP/AVIF) + correct dimensions.
  2. ✅ Lazy-load below-the-fold images only (not hero).
  3. ✅ Preload the hero image (if it’s LCP).
  4. ✅ Inline critical CSS for above-the-fold layout.
  5. ✅ Reduce render-blocking CSS/JS.

INP checklist

  1. ✅ Reduce heavy JS bundles (split/trim unused JS).
  2. ✅ Delay non-critical scripts (analytics/trackers).
  3. ✅ Avoid long tasks (break up expensive JS work).
  4. ✅ Use passive listeners for scroll/touch where needed.
  5. ✅ Optimize interactive UI (menus, sliders, popups).

CLS checklist

  1. ✅ Always set width/height (or aspect-ratio) for images and videos.
  2. ✅ Reserve space for ads/embeds.
  3. ✅ Avoid inserting banners above content after load.
  4. ✅ Use font-display: swap (and stable font loading).
  5. ✅ Don’t animate layout properties (like height) for big blocks.

Fix LCP (loading) — practical actions

Top LCP fixes

• Optimize hero image (AVIF/WebP)
• Preload LCP asset
• Reduce render-blocking CSS
• Improve server response (TTFB)

Quick wins

• Remove huge sliders
• Use a simpler hero section
• Defer non-critical JS
• Compress + resize images

Fix INP (interaction) — practical actions

  • Audit JS: remove unused libraries and heavy plugins.
  • Defer third-party scripts: load after user interaction or after 3–5 seconds.
  • Break long tasks: split heavy logic into smaller chunks.
  • Reduce DOM complexity: too many elements = slower interactions.

Fix CLS (layout shifts) — practical actions

  • Reserve space for images, videos, iframes, ads.
  • Avoid late UI injection: cookie banners, sticky bars should not push content down.
  • Fonts: preload key fonts + avoid big font swaps that reflow text.
  • Animations: prefer transform/opacity, avoid layout-changing animations.

Priority order (what to fix first)

  1. Top landing pages (highest traffic / highest conversions).
  2. LCP first (usually easiest ROI).
  3. CLS next (often quick CSS fixes).
  4. INP last (can require deeper JS cleanup).

Want a Free CWV Audit Summary?

Share your website URL and we’ll send the top issues + fix priorities for LCP/INP/CLS.

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Conclusion

Core Web Vitals isn’t just SEO—it's conversion. Start with the pages that make money, fix LCP/CLS quickly, then clean up JavaScript to improve INP. Small changes here often reduce bounce, improve ROAS, and increase leads.