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Performance Optimization

WordPress Core Web Vitals Optimization

WordPress Lighthouse Score from 40 to 94 - 100% Core Web Vitals Improvement

#PHP#WordPress#Redis#CDN#WebP
Client
E-Commerce Platform - Cellco.ca
Languages
Php, Javascript
Fig. 1 — WordPress Core Web Vitals Optimization featured view (click to expand)
01

The Problem

Business Impact

The site had a Lighthouse performance score of 40 - painfully slow, affecting SEO rankings, user experience, and conversion rates.

Constraints

Site had to continue growing in functionality - any new features could not drop the score below 90.

02

Technical Execution

Architectural Strategy

Comprehensive optimization across every layer of the WordPress stack - plugin code, caching strategy, image delivery, database queries, and asset loading.

Depth of Execution

Implemented page-level, component-level, and database query caching. Redis/Memcached for object caching. WebP conversion + lazy loading. Minified CSS/JS with critical CSS loading. CDN for static assets. Built optimization into every new feature from the ground up.

03

Results

  • Lighthouse score improved from 40 to 94 (135% improvement).
  • Score maintained above 90 even after adding multiple advanced custom plugins.
  • Direct impact on SEO rankings and reduced bounce rate.
Future Proofing

Performance-first engineering built into all new features - optimization is an architectural concern, not an afterthought.

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