Performance Optimization

Performance is not a feature — it is a requirement. I help businesses transform slow, bloated web applications into fast, responsive experiences that users love and search engines reward. My performance optimization service is systematic, data-driven, and delivers measurable results.

Every engagement begins with a comprehensive audit. I use Lighthouse, WebPageTest, Chrome DevTools Performance panel, and the web-vitals library to establish baseline metrics: LCP, INP, CLS, FCP, TTFB, and TTI. I analyse JavaScript bundles with tools like Bundle Analyzer and Statoscope to identify bloat. I profile rendering performance to find jank, long tasks, and layout thrashing.

From the audit findings, I build a prioritised optimization roadmap. Typical interventions include: route-based code splitting to reduce initial JavaScript payload; image optimisation with WebP/AVIF formats, responsive sizes, and lazy loading; font optimisation with subsetting, font-display swap, and self-hosting; render-blocking resource elimination with critical CSS inlining and deferred non-critical scripts; and caching strategies with CDN configuration, service workers, and stale-while-revalidate patterns.

I also implement performance monitoring to prevent regressions. Using tools like SpeedCurve, Calibre, or the web-vitals library with your analytics, I set up automated alerts that catch performance degradations before they reach production. On past projects, my optimization work has reduced LCP by 50-70%, eliminated CLS entirely, and achieved consistent 95+ Lighthouse Performance scores.