Pass Core Web Vitals on Any Platform
Expert Core Web Vitals Optimization Services
Real-user monitoring and a clear list of fixes to pass LCP, INP, and CLS, engineered for sites of all sizes that need to rank higher and convert more visitors.
Google's Core Web Vitals, Largest Contentful Paint (LCP), Interaction to Next Paint (INP), and Cumulative Layout Shift (CLS), are confirmed ranking factors, yet 40% of sites still fail at least one metric in the field. The gap between lab scores and real-user data trips up most optimization efforts. Our Core Web Vitals optimization services target CrUX field data directly, monitor Google's 28-day rolling window, and make iterative adjustments until all three metrics consistently pass. We optimize against the Chrome User Experience Report (CrUX), the same real-user field data Google uses for the page experience signals in ranking. A fast server response is the foundation for passing LCP, so we also optimize your TTFB as part of the engagement. If you also want to improve your PageSpeed score across Lighthouse and GTmetrix, we cover that too.
Trusted by leading brands
Our Expertise
Work With a Core Web Vitals Optimization Expert
Passing Core Web Vitals is a code problem, not a plugin you install. Every engagement is run by a Core Web Vitals optimization expert who profiles your site with both lab tools and real-user CrUX data, isolates exactly what is failing each metric, and fixes it at the source.
Teams come to us for Core Web Vitals consulting when a generic speed plugin has stalled and they need the assessment to actually pass. You get a metric-by-metric report, before and after field data, and documentation of every change, not a black box. We have a 100% Core Web Vitals pass rate when clients implement our recommendations.
1,500+
Optimization projects
100%
Core Web Vitals pass rate
90+
PageSpeed scores
Matt Suffoletto
Founder & CEO, PageSpeed Matters
Core Web Vitals Optimization Expert
Who This Is For
Is This Right for You?
SEO-Focused Teams
Teams that need passing CWV to maintain or improve search rankings and stay ahead of algorithm updates.
E-Commerce Stores
Online stores where CWV impacts product visibility in Google Shopping, organic search, and conversion rates.
Enterprise Websites
Enterprise sites where CWV assessment affects entire domains and brand perception across markets.
Publishers & Media
Ad-heavy publisher sites where CWV is critical for Google Discover visibility and ad revenue optimization.
Common Problems
Why Are Your Core Web Vitals Failing?
Failing LCP (Largest Contentful Paint)
Your hero image, banner, or main content element takes over 2.5 seconds to render. Causes: unoptimized images, render-blocking CSS/JS, slow server response (TTFB), and font-display issues.
Guide: LCP Optimization Deep DiveFailing INP (Interaction to Next Paint)
User interactions (clicks, taps, key presses) feel sluggish — taking over 200ms to respond visually. Causes: long JavaScript tasks, heavy event handlers, third-party script blocking, and main-thread congestion.
Guide: INP Optimization Deep DiveFailing CLS (Cumulative Layout Shift)
Page content jumps around unexpectedly as elements load. Causes: images without dimensions, dynamic ad/content injection, web font FOUT/FOIT, and late-loading components.
Guide: CLS Optimization Deep DiveLab vs. Field Data Mismatch
Your PageSpeed Insights lab score looks green, but Google Search Console shows failing CWV. Real users on slower devices and connections experience your site differently than simulated tests.
Guide: Lab vs. Field Data ExplainedOur Solutions
How We Fix Your Core Web Vitals
We target each metric individually with real-user data, not a generic checklist. We fix the LCP render path, break up the JavaScript that hurts INP, eliminate the layout shifts behind CLS, and monitor CrUX until all three pass. Here is what that covers:
LCP Engineering
We optimize the entire LCP render path — server response time (TTFB), resource discovery, Critical CSS inlining, hero image priority hints (fetchpriority), font-display optimization, and render-blocking resource elimination. We target the actual LCP element on each page type, not generic recommendations.
INP & JavaScript Optimization
We profile every interaction handler, break long tasks into smaller chunks using yield-to-main patterns, defer non-critical JavaScript, optimize event listeners, and reduce main-thread blocking from third-party scripts. Result: all interactions respond in under 200ms.
CLS Elimination
We add explicit dimensions to all media, implement aspect-ratio CSS, reserve space for dynamic content and ads, optimize font loading with font-display:optional or preload strategies, and fix late-loading component shifts. Every layout shift source is identified and eliminated.
CrUX Field Data Monitoring
We set up Real User Monitoring (RUM) to track actual visitor experiences, correlate with Chrome UX Report data, and make iterative adjustments over 2-4 weeks until Google's 28-day rolling p75 window shows green for all three metrics — not just lab scores.
Third-Party Script Management
Analytics, chat widgets, tracking pixels, and ad scripts are the #1 hidden cause of CWV failures. We audit every third-party script, implement facade patterns, defer non-critical loads, and set up performance budgets to prevent regression.
Performance Safeguarding
After achieving passing CWV, we provide 30 days of monitoring to catch regressions from content updates, plugin changes, or new feature deployments. You receive a Speed Budget Document with thresholds for JS size, image weight, and third-party script limits.
The Data
What Passing Core Web Vitals Does for You
When your site passes Core Web Vitals, the payoff shows up in rankings and revenue. Sites that pass earn more organic visibility, hold visitors who would have bounced on a slow load, and convert more of the traffic they already have. The research is consistent across every study:
Proof
Our Results
Real sites, real Core Web Vitals improvements, real ranking and revenue impact.
Therapevo
Went from failing to passing all Core Web Vitals. PageSpeed score from 32 to 96.
View Case Study
Platterful
80% speed improvement, 20% conversion lift. Mobile score from 50s to 90+.
View Case Study
NSAR
Passed all CWV metrics with comprehensive WordPress + WooCommerce optimization.
View Case StudyROI Calculator
How Much Revenue Is Your Slow Site Costing You?
Enter your URL — in 30 seconds, you'll see exactly how much revenue slow speed is costing you.
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10,000+ sites analyzed · No login required · See your losses in 30 seconds
conversion loss per 1-second delay
of visitors leave after 3 seconds
Think with Google
in annual revenue lost to slow sites
Akamai
of consumers say speed affects purchases
Unbounce
higher bounce rate at 5s vs 1s load
of shoppers won't return to slow sites
Akamai
faster = 1% more conversions
Deloitte
sites analyzed by our tool
PageSpeed Matters
to form a first impression online
Google Research
abandon sites that take 3s+ to load
Portent
conversion loss per 1-second delay
of visitors leave after 3 seconds
Think with Google
in annual revenue lost to slow sites
Akamai
of consumers say speed affects purchases
Unbounce
higher bounce rate at 5s vs 1s load
of shoppers won't return to slow sites
Akamai
faster = 1% more conversions
Deloitte
sites analyzed by our tool
PageSpeed Matters
to form a first impression online
Google Research
abandon sites that take 3s+ to load
Portent
Our Process
How It Works
Full CWV Assessment
We analyze LCP, INP, and CLS across all page types using both lab tools (Lighthouse, WebPageTest) and field data (CrUX, Search Console). Every failing metric is traced to its root cause — not surface-level symptoms.
Root Cause Profiling
Each failing metric gets a dedicated root cause analysis. We profile JavaScript execution, trace render waterfalls, identify layout shift sources, and measure real-user impact. You receive a ranked report showing exactly what's failing and why.
Optimization Sprint
1–2 WeeksOver 1–2 weeks, we implement all fixes on staging: Critical CSS generation, image optimization, JavaScript deferral, layout shift prevention, third-party script management, and server-side improvements. Zero risk to your live site.
CrUX Field Verification
2–4 WeeksWe monitor real-user field data (CrUX) over 2–4 weeks, making iterative adjustments until LCP, INP, and CLS consistently pass in Google's 28-day rolling p75 window — the actual data Google uses for ranking.
Deployment & Documentation
Once validated in the field, all changes are deployed to production. You receive complete documentation of every change, a speed budget for future development, and a before/after performance report with projected SEO and revenue impact.
Deliverables
What You'll Receive
Every engagement includes comprehensive documentation and reporting.
Before/After CWV Report
Lab and field data comparison for LCP, INP, and CLS across all page types with waterfall analysis.
Root Cause Analysis Report
Each failing metric traced to its specific root cause with technical explanation and fix priority.
Third-Party Script Audit
Every external script identified, measured for CWV impact, and categorized with defer/async/remove recommendations.
Competitor CWV Benchmark
How your site's Core Web Vitals compare against 3–5 direct competitors with specific metric comparisons.
CrUX Tracking Report
28-day rolling window tracking showing progression from failing to passing with field data evidence.
RUM Dashboard Setup
Real User Monitoring configured to track LCP, INP, and CLS continuously with alerting for regressions.
Revenue Impact Projection
Custom report mapping CWV improvements to projected conversion and revenue gains using your actual traffic data.
SEO Impact Forecast
Projected ranking improvements based on CWV fixes, with estimated organic traffic gains from your Search Console data.
Google Ads / CPC Savings Report
Analysis of how improved page experience lowers your Quality Score penalty and reduces cost-per-click.
30-Day Post-Launch Monitoring
30 days of monitoring after deployment to ensure CWV gains hold through content updates and platform changes.
Speed Budget Document
Performance budgets for JS size, image weight, third-party scripts, and CWV thresholds so your team doesn't regress.
Executive Summary (1-Pager)
Non-technical summary showing what was done, what improved, and what it means in dollars for stakeholders.
Maintenance Guidelines
Step-by-step guide for maintaining passing CWV as you add content, features, and third-party integrations.
Pricing
Transparent Speed Optimization Pricing
Get an instant estimate based on your site profile. No hidden fees, no lock-in contracts — just measurable speed improvements and revenue gains.
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The Three Metrics
Core Web Vitals Explained
LCP (Largest Contentful Paint)
The time it takes for the largest visible element — usually a hero image or heading — to render. Must be under 2.5 seconds for a 'good' score.
INP (Interaction to Next Paint)
Measures responsiveness — how quickly your page responds visually to user interactions like clicks, taps, and key presses. Must be under 200ms.
CLS (Cumulative Layout Shift)
Measures visual stability — how much content shifts unexpectedly during loading. Must be under 0.1 for a 'good' score.
Deep Dives
Core Web Vitals Guides
Go deeper with our free expert guides on each Core Web Vital metric.
FAQ
Frequently Asked Questions
Testimonials
What Clients Say
"Matt and the PageSpeed Matters team successfully helped us improve our page speed load times and get our core web vitals into the green for all pages. Thank you!"
Core Web Vitals into the green on all pages
Caleb Simonyi-Gindele
Owner, Therapevo
"Platterful saw major improvements in site speed after working with Matt and the PageSpeed Matters team. They took our mobile score from the 50s to over 90 while keeping SEO intact. They were responsive, helpful, and continued to support us even after the project ended. Highly recommend."
Mobile PageSpeed 50s to 90+
Lowell
Co-Founder, Platterful
"Outstanding results! Matt and his team delivered measurable outcomes for our company, something larger firms only promised but never followed through on. Truly impressive work!"
Passed Core Web Vitals on WooCommerce
Cody Stehlik
Team, NSAR
Ready to Pass Core Web Vitals?
Request a CWV audit and see exactly which metrics are failing and how we'll fix them.
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