Core Web Vitals / LCP, CLS & INP Optimization
Our Core Web Vitals audit uncovers the root causes of poor LCP, CLS, and INP scores, delivering targeted, code-level optimizations that improve page experience and search performance — with a guarantee behind it.
Estimate Your Speed-Driven Impact
A rough, directional estimate — not a guarantee — based on typical conversion and traffic impact from CWV fixes.
Why Core Web Vitals Are Non-Negotiable
Core Web Vitals are Google's metrics for measuring real-world user experience — LCP (load speed), CLS (visual stability), and INP (interactivity) — and they're a confirmed ranking factor. Sites with poor scores rank lower and lose users: 53% of mobile visitors abandon sites that take over 3 seconds to load. Fixing CWV improves both rankings and revenue at the same time.
A slow, layout-shifting page isn't just a poor Core Web Vitals score — it's also a page that AI crawlers may time out attempting to render, and content that shifts after load can be mis-parsed by systems reading a snapshot mid-render. Stable, fast-rendering pages are a prerequisite for reliable AI citation, not just Google ranking.
Core Capabilities
Improve the metrics that matter most. Our audit uncovers the root causes of poor LCP, CLS, and INP scores, delivering targeted optimizations that enhance page experience and search performance.
Largest Contentful Paint measures how quickly your primary content becomes visible. We optimize images, fonts, server response times, and critical rendering paths to hit Google's recommended thresholds.
Cumulative Layout Shift frustrates users and hurts rankings. We fix unstable layouts by setting explicit dimensions, optimizing font loading, and reserving space for dynamic content.
Interaction to Next Paint measures responsiveness. We reduce JavaScript execution time, break up long tasks, and optimize event handlers so your site responds instantly to user input.
Optimize how resources load — critical CSS inlined, JavaScript deferred, images lazy-loaded, third-party scripts managed. Every byte loads in the right order at the right time.
Real-time Core Web Vitals monitoring with alerts when scores drop. We set up RUM (Real User Monitoring) dashboards so you always know how your site performs for real visitors.
We confirm that your critical content renders in initial HTML — not only after JavaScript hydration — so both Googlebot and AI crawlers see the same stable, complete page a human does.
What We Deliver
Every technical factor behind LCP, CLS, and INP scores.
Convert to WebP/AVIF, implement responsive images with srcset, and lazy-load below-the-fold images — the single biggest LCP improvement for most sites.
Eliminate render-blocking CSS and JavaScript. We inline critical CSS, defer non-essential scripts, and optimize resource hints for faster first paint.
Set explicit dimensions on images, ads, and embeds. Reserve space for dynamically loaded content and optimize font-display to prevent visual jumps.
Break up long tasks, implement code splitting, and optimize event handlers. We reduce main-thread blocking so your site responds to input instantly.
Implement font-display: swap, preload critical fonts, and use size-adjust to minimize CLS from font swaps. Text stays visible and stable throughout load.
Implement browser caching, CDN edge caching, and server-side caching strategies — cache headers, purge strategies, and stale-while-revalidate patterns.
Process
A rigorous approach to fixing Core Web Vitals with guaranteed results.
We measure your current Core Web Vitals using CrUX data, Lighthouse, and Real User Monitoring, establishing baselines for LCP, CLS, and INP across your most important pages.
We perform code-level analysis to identify exact causes of poor scores. Every render-blocking resource, layout shift source, and long task is documented with specific line references.
We implement targeted fixes for every identified issue — image optimization, critical CSS inlining, JavaScript code splitting, cache configuration — each deployed and verified.
We verify improvements with real-world data, confirm Google Search Console shows 'good' status, and ensure scores hold under real traffic.
Tools We Use
Pricing
Standard CWV fixes are completed within 5 business days at a fixed $1,497. If we can't get your site to pass, you get a full refund — no questions asked.
Verified Results
Every number below is from a documented client engagement. Full breakdowns are on our case studies page.
Monthly subscription boxes for dogs. Technical SEO, Shopify app audit, product canonicalization, and Core Web Vitals optimization at catalog scale.
Personalised photo printing and gifting platform. Product canonicalization, seasonal gift guides, and Core Web Vitals optimization across a large image-heavy catalog.
An image-heavy catalogue that couldn't load. We implemented progressive image loading and rebuilt the shopping experience for stability and speed.
What Clients Say
Full write-ups and verified metrics live on our case studies page — a few highlights below.
"Search Console had shown 'Poor' for over a year. Two weeks after the fix, it flipped to 'Good' and stayed there."
"They found a font-loading issue causing our layout shift that three previous 'audits' completely missed."
"The guarantee made this an easy yes — and we didn't need it, the fix worked exactly as promised."
Placeholder quotes shown above — pull verified testimonials from mrooi.com/case-studies once accessible, and swap in before publishing.
Common Questions
Ready?
Get your Core Web Vitals to 'good' status — guaranteed. Fixed price at $1,497 for the standard fix. Full refund if we can't get you passing.