Performance & Core Web Vitals

Lightning-Fast  
Headless Performance
=====================================

Optimize LCP, INP, CLS and API latency for sub-second load times that drive conversions and revenue.

[Start with Light Audit ($199)](https://www.elevaseo.com/en/contact)
[Pro Audit ($1,200-2,000)](https://www.elevaseo.com/en/contact)

Comprehensive performance optimization covering

Lighthouse Score•Core Web Vitals•API Latency•ISR/SSR Optimization•TTFB

Performance Audits  
Built for Speed
------------------------------------

From quick diagnostics to comprehensive performance engineering, we optimize every layer of your Headless stack for maximum speed.

POPULAR

### Light Performance Audit

$199•3 days

Fast diagnostic of your Headless performance with Lighthouse, Core Web Vitals baseline, and actionable recommendations.

#### What's Included

*   ✓Lighthouse Performance Audit (Desktop + Mobile)
*   ✓Core Web Vitals Analysis (LCP, INP, CLS)
*   ✓SEO Structure Baseline
*   ✓PDF Report with Recommendations
*   ✓Priority Action Plan

[Book This Audit](https://www.elevaseo.com/en/contact)

POPULAR

### Pro Performance Audit

$1,200 - $2,000•7-10 days

Comprehensive performance engineering covering API latency, ISR/SSR optimization, Posthog analysis, and strategic roadmap.

#### What's Included

*   ✓Everything in Light Audit
*   ✓CMS/Storefront API Latency Heatmap
*   ✓ISR/SSR Performance Engineering
*   ✓Posthog Event Flow Analysis
*   ✓Feature Flags Performance Impact
*   ✓Marketing Tracking Consistency (GA4/Meta/Posthog)
*   ✓ROI Analysis & Migration Plan
*   ✓Technical Action Plan with Timeline
*   ✓Post-Audit Support (30 days)

[Book This Audit](https://www.elevaseo.com/en/contact)

### CMS API Latency Heatmap

$850•5-7 days

Deep-dive analysis of your CMS API response times with geographic latency mapping and optimization recommendations.

#### What's Included

*   ✓Multi-region API latency testing
*   ✓Response time heatmap visualization
*   ✓Slow query identification
*   ✓Cache strategy recommendations
*   ✓Edge CDN configuration audit
*   ✓API route optimization suggestions

[Book This Audit](https://www.elevaseo.com/en/contact)

### Storefront API Optimization

$950•5-7 days

Optimize your e-commerce Storefront API (Shopify, BigCommerce) for maximum performance and conversion rates.

#### What's Included

*   ✓Storefront API response time analysis
*   ✓GraphQL query optimization
*   ✓Product catalog performance audit
*   ✓Cart & checkout flow optimization
*   ✓ISR/SSR strategy for product pages
*   ✓Cache invalidation best practices

[Book This Audit](https://www.elevaseo.com/en/contact)

Not sure which audit is right for you?

[Schedule a Discovery Call](https://www.elevaseo.com/en/contact)

Resources
---------

[### Core Web Vitals and SEO in 2026](https://www.elevaseo.com/en/blog/performance/core-web-vitals-seo-2026)

LCP, INP, CLS: ranking impact and optimizations.

[Read more](https://www.elevaseo.com/en/blog/performance/core-web-vitals-seo-2026)

[### Improve LCP: practical guide](https://www.elevaseo.com/en/blog/performance/ameliorer-lcp)

Advanced techniques to reduce Largest Contentful Paint.

[Read more](https://www.elevaseo.com/en/blog/performance/ameliorer-lcp)

[### Complete technical SEO audit](https://www.elevaseo.com/en/blog/seo/audit-technique)

Methodology for a professional technical audit.

[Read more](https://www.elevaseo.com/en/blog/seo/audit-technique)