eCommerce Performance Specialists

Faster Stores.Higher Revenue.

A 1-second delay in page load time can cost you 7% of conversions. We diagnose, fix, and validate every performance bottleneck in your Magento or Shopify store — with measurable results.

Core Web Vitals
TTFB & Load Time
Lighthouse Scores
<1s
Typical TTFB after optimisation
90+
Lighthouse scores achieved
200+
Integration modules built
15+
Years of eCommerce expertise
Performance Areas

What We Fix

Performance problems are rarely one thing. We work across the full stack — from server config to frontend rendering — to remove every bottleneck.

Server & Infrastructure

TTFB optimisation, Varnish full-page cache configuration, Redis tuning, PHP-FPM pool sizing, CDN setup and cache-control headers — the foundation everything else depends on.

Database & Query Performance

Slow query identification, index optimisation, N+1 query elimination, EAV attribute cleanup, and flat catalogue configuration for large catalogues.

Image & Media Optimisation

WebP conversion, lazy loading, responsive image srcset, CDN delivery, and media gallery optimisation — often the single biggest quick win on image-heavy stores.

JavaScript & CSS Bundles

Bundle analysis, dead code elimination, third-party script auditing, defer/async strategies, and critical CSS extraction — cutting render-blocking resources that delay FCP and LCP.

Core Web Vitals

LCP, CLS, and INP improvements targeted to Google's thresholds — directly impacting SEO ranking, ad Quality Scores, and user experience metrics.

Third-Party Script Management

Audit and governance of analytics, chat, marketing, and tracking scripts — loading them asynchronously, conditionally, or via server-side tagging to eliminate main-thread blocking.

What We Measure

Core Web Vitals & Key Metrics

We optimise to Google's official thresholds — the metrics that directly affect SEO rankings, ad costs, and revenue.

LCP≤ 2.5s

Largest Contentful Paint

How fast the main content loads. Google's primary ranking signal for page experience. Poor LCP is the most common issue on Magento stores with large hero images.

INP≤ 200ms

Interaction to Next Paint

How responsive the page feels to user interactions. Replaced FID in March 2024. Heavy JavaScript and third-party scripts are the main culprits.

CLS≤ 0.1

Cumulative Layout Shift

Visual stability — how much the page shifts as it loads. Banner ads, late-loading fonts, and dynamically injected content are common causes.

TTFB≤ 800ms

Time to First Byte

Server response time before the browser receives any data. Driven by server performance, caching, and network routing. The foundation of all other metrics.

How It Works

Our Process

A structured audit-first approach — no guesswork, no random fixes, just data-driven improvements with verified results.

01

Performance Audit

3–5 days

Full audit using Lighthouse, WebPageTest, Chrome UX Report (CrUX), and server-side profiling. We produce a prioritised list of issues ranked by impact and implementation effort.

02

Infrastructure Assessment

1–2 days

Review of server config, caching layers, CDN setup, PHP version, and database performance. Many of the biggest gains are at the infrastructure level before any code is touched.

03

Implementation Sprint

1–3 weeks

Fixes implemented in priority order, each with a defined expected improvement. Server config, code changes, and asset optimisation all delivered with full test coverage and staging validation.

04

Measurement & Validation

1 week

Post-deployment measurement using the same tools as the audit. We report before/after on every metric and validate against real user data (CrUX) after the changes propagate.

05

Ongoing Monitoring

Ongoing

Performance regressions happen — new extensions, marketing scripts, and deployments all introduce risk. We set up alerting and run quarterly audits to keep scores in the green.

Free Performance Audit

How Fast Is Your Store?

Share your store URL and we'll run a full Lighthouse + CrUX + server audit, then send you a prioritised improvement plan — free, no obligation.

What's Included

  • Lighthouse audit (mobile + desktop)
  • Core Web Vitals field data review (CrUX)
  • TTFB and server response analysis
  • JavaScript and CSS bundle review
  • Image and media optimisation check
  • Third-party script impact assessment
  • Prioritised fix list with estimated impact
office@cleverplusplus.com
Cluj-Napoca, Romania