The #1 Lighthouse Performance Optimization Agency
Expert Lighthouse Performance Optimization Services
Metric-by-metric performance engineering, audit resolution, Lighthouse CI integration, and score stabilization — purpose-built for sites that need consistent 90+ Lighthouse scores across every page template.
Lighthouse is the open-source performance engine behind Google PageSpeed Insights, Chrome DevTools, and web.dev. It measures 5 weighted metrics — FCP (10%), Speed Index (10%), LCP (25%), TBT (30%), and CLS (25%) — and surfaces Opportunities and Diagnostics that explain exactly why your score is low. The challenge is that Lighthouse tests simulate a throttled mid-tier device, so even fast-feeling sites can score poorly. Our Lighthouse optimization service systematically resolves every audit item, stabilizes scores across test runs, and integrates Lighthouse CI into your deployment pipeline for ongoing protection.
Trusted by leading brands
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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
Who This Is For
Is Your Lighthouse Score Holding You Back?
E-Commerce Stores
Online stores where Lighthouse scores directly correlate with conversion rates — every failed audit represents lost revenue.
SaaS & Tech Companies
Tech companies that need to demonstrate technical excellence through perfect Lighthouse scores — especially when selling to developer audiences.
Digital Agencies
Agencies that need to deliver consistently high Lighthouse scores across client projects — with CI integration to maintain scores over time.
Enterprise Organizations
Enterprise teams with internal Lighthouse score requirements, performance budgets, and CI/CD pipelines that need expert optimization.
Common Problems
What's Dragging Your Score Down?
Low Performance Metrics
FCP, LCP, TBT, CLS, and Speed Index scores below green thresholds. Lighthouse weighs TBT at 30% and LCP at 25% — so JavaScript execution and largest content paint dominate your score. Generic optimizations that ignore these weights leave points on the table.
Service: Core Web Vitals OptimizationUnresolved Opportunities
Lighthouse surfaces specific optimization opportunities with estimated savings — unused JavaScript, render-blocking resources, unoptimized images, improperly sized images, and text compression. Each unresolved opportunity directly reduces your score.
Guide: Resolving Lighthouse OpportunitiesDiagnostic Warnings
DOM size exceeding 1,500 nodes, critical request chains, excessive main-thread work, large JavaScript bundles, and inefficient cache policies. Diagnostics don't directly affect the score but indicate deeper architectural issues.
Guide: Lighthouse Diagnostics ExplainedScore Variability Between Runs
Lighthouse scores fluctuating 10–20 points between test runs due to server response time variability, third-party script timing, and ad auction delays. This makes it impossible to know if optimizations actually worked.
Guide: Stabilizing Lighthouse ScoresMobile vs Desktop Score Gap
Mobile Lighthouse runs simulate a Moto G Power with 4x CPU throttling and slow 4G network — dramatically penalizing JavaScript-heavy sites. Desktop runs use minimal throttling, creating a 20–40 point gap that requires mobile-specific engineering.
Service: PageSpeed Insights OptimizationBest Practices & Accessibility Failures
Beyond performance, Lighthouse audits Best Practices (HTTPS, console errors, deprecated APIs) and Accessibility (contrast, ARIA, keyboard navigation). Failed Best Practices audits signal technical debt; failed Accessibility audits risk legal exposure.
Guide: Lighthouse Best Practices ChecklistOur Solutions
How We Get You to 90+
Weighted Metric Optimization
We optimize in order of score weight: TBT first (30%), then LCP (25%) and CLS (25%), then Speed Index (10%) and FCP (10%). This maximizes score improvement per engineering hour.
Complete Opportunity Resolution
We resolve every Opportunities item: unused JavaScript removal, render-blocking resource elimination, image format conversion (WebP/AVIF), proper image sizing, text compression, and font optimization.
Diagnostic Architecture Fixes
We address root-cause architectural issues: DOM complexity reduction, critical request chain elimination, main-thread work reduction, JavaScript bundle optimization, and cache policy implementation.
Score Stabilization Engineering
We eliminate score variability by optimizing server response consistency, implementing deterministic third-party loading, and setting up multiple-run median scoring for accurate measurement.
Lighthouse CI Integration
We integrate Lighthouse into your CI/CD pipeline with performance budgets, automated testing on every deploy, and score regression alerts — so no deployment can silently degrade performance.
Cross-Category Optimization
Beyond Performance, we optimize Lighthouse's Accessibility, Best Practices, and SEO categories — achieving green scores across all four categories for a complete Lighthouse pass.
The Data
Why Lighthouse Scores Matter
Your Lighthouse score directly correlates with user experience and business outcomes.
Proof
Our Results
Real sites, real Lighthouse improvements, real business impact.
Therapevo
Lighthouse performance from 32 to 96 — all Opportunities resolved, all Diagnostics clean, 90+ scores across mobile and desktop.
View Case Study
Pure Parima
Mobile Lighthouse from 29 to 87 — every audit resolved, TBT reduced from 2,800ms to 180ms, LCP from 8.2s to 2.1s.
View Case Study
Platterful
80% load time reduction with Lighthouse 90+ across all page templates — homepage, collections, and product pages.
View Case StudyOur Process
How It Works
Multi-Page Lighthouse Audit
We run Lighthouse audits against every key page template — homepage, product/service pages, blog posts, landing pages, and category pages — across both mobile and desktop. Each page gets a detailed breakdown of all 5 performance metrics, every Opportunity, every Diagnostic, and Best Practices/Accessibility scores.
Score Impact Prioritization
We rank every audit item by its score impact using Lighthouse's scoring algorithm. TBT fixes get priority (30% of score), followed by LCP and CLS optimizations (25% each). We create a phased roadmap so you see score improvements throughout the engagement.
Systematic Optimization Sprint
1–3 WeeksOver 1–3 weeks, we implement all fixes across every page template: JavaScript profiling and code-splitting, image optimization pipeline, CSS critical-path extraction, font loading strategy, server response optimization, and third-party script management.
Score Verification & Stabilization
We run multiple Lighthouse tests per page to verify score improvements and assess variability. We use median scoring across 5+ runs to confirm consistent 90+ scores rather than relying on single test results.
Lighthouse CI Deployment
CI/CDWe integrate Lighthouse CI into your deployment pipeline with performance budgets and automated score checks. Every future deploy is tested against your baseline scores — regressions are caught before they reach production.
Deliverables
What You'll Receive
Every Lighthouse engagement includes comprehensive documentation and CI integration.
Before/After Lighthouse Report
Lighthouse scores for every key page — mobile and desktop — before and after optimization, with all 5 metric improvements documented.
Audit Resolution Log
Every Lighthouse Opportunity and Diagnostic item documented with root cause, fix implemented, estimated savings, and verified improvement.
Metric Breakdown Analysis
Detailed FCP, SI, LCP, TBT, and CLS analysis for every page template showing how each metric contributes to the overall score.
JavaScript Execution Profile
Main-thread work breakdown showing which scripts consume the most CPU time, with specific deferral and code-splitting recommendations.
Image Optimization Report
Every image asset analyzed for format, compression, sizing, and lazy-loading status — with before/after file sizes and LCP impact.
Third-Party Script Audit
Every third-party script profiled for execution time, network cost, and main-thread impact — with removal or deferral recommendations.
Competitor Lighthouse Benchmark
How your Lighthouse scores compare against 3–5 direct competitors across all categories — Performance, Accessibility, Best Practices, SEO.
Revenue Impact Projection
Custom report mapping your Lighthouse improvements to projected organic traffic gains, conversion improvements, and revenue impact.
Lighthouse CI Configuration
Complete CI/CD integration with performance budgets, automated testing, and regression alerts — ready to deploy.
30-Day Post-Launch Monitoring
30 days of automated Lighthouse monitoring after deployment to catch any score regressions from CMS updates or new deployments.
Performance Budget Document
A living document setting budgets for JavaScript size, image weight, DOM complexity, and key metrics to prevent future regressions.
Executive Summary (1-Pager)
A non-technical summary for stakeholders showing score improvements across all Lighthouse categories and business impact.
Pricing
Estimate Your Investment
Answer a few quick questions about your site to get an instant ballpark. Final pricing is confirmed after an audit.
How much traffic does your site get?
How much custom code does your site have?
How many third-party tools are running?
Do you need Core Web Vitals optimization?
How many posts/pages and products does your site have?
Estimated Investment
$1,500 – $2,500
One-time optimization fee
Typical Timeline
5–7 days
Why this range
simple setup
Final quote + plan confirmed after audit
What We Optimize
Lighthouse Expertise
Performance Scoring Algorithm
Deep understanding of Lighthouse's weighted scoring: how each metric contributes to the final score and which optimizations yield the highest point gains.
TBT & JavaScript Profiling
Total Blocking Time accounts for 30% of your score. We profile every JavaScript task on the main thread, break up long tasks, defer non-critical execution, and implement code-splitting.
LCP Engineering
Largest Contentful Paint (25% of score) optimization through image format conversion, preloading, critical CSS, server response tuning, and render-blocking elimination.
CLS Prevention
Cumulative Layout Shift (25% of score) elimination through explicit dimensions, font loading strategy, ad slot reservation, and dynamic content containment.
Lighthouse CI & DevOps
Integration of Lighthouse into CI/CD pipelines (GitHub Actions, GitLab CI, Jenkins) with performance budgets, automated testing, and deployment gates.
Multi-Category Optimization
Beyond Performance, we optimize Accessibility (WCAG 2.1), Best Practices (HTTPS, console, APIs), and SEO (meta, structured data, crawlability).
Deep Dives
Lighthouse Performance Guides
Go deeper with our free expert guides on Lighthouse optimization.
FAQ
Frequently Asked Questions
Ready to Hit 90+ Across All Lighthouse Categories?
Request an audit and see exactly which audits are failing — and how we'll resolve every one.
