Website Speed Optimization for Core Web Vitals

Website Speed Optimization from Global One Digital pushes Core Web Vitals (LCP, CLS, INP) into the green and keeps them there as your site grows. We work on B2B, SaaS and ecommerce sites where every second of latency costs conversions and rankings — and our audits ship concrete fixes, not just lists of Lighthouse warnings copied into a PDF.

What we audit and fix

Image and font optimisation: modern formats (AVIF, WebP), proper sizing, lazy loading, font-display tuning. JavaScript bundles: code splitting, tree-shaking, third-party script auditing (analytics, chat widgets, ad pixels). CSS critical path extraction so first paint happens fast even on slow connections. Server response time: caching strategy at edge and origin, CDN setup or migration, database query tuning when slow queries dominate.

Core Web Vitals targets

Google ranks Core Web Vitals: LCP under 2.5 seconds, CLS under 0.1, INP under 200 milliseconds. We measure your real-user data via CrUX and PageSpeed Insights, identify which page templates fail, and fix them in priority order. Most clients move from yellow or red to green within four to six weeks of focused work — and stay there with proper monitoring.

Stack expertise

We optimise WordPress, WooCommerce, Shopify, Next.js, Nuxt, Laravel and custom PHP applications. For WordPress specifically we work with LiteSpeed Cache, WP Rocket, Cloudflare and image CDNs. For headless and JAMstack we tune build pipelines, edge caching and ISR strategies. Tool selection follows your stack, not our preferences. No one-size-fits-all snake oil.

Why typical performance work fails

Most speed audits ship a list of warnings without prioritising what actually matters for your specific site. Common failures: focusing on Lighthouse score rather than real-user CWV, optimising pages that get no traffic while ignoring the high-traffic pages that fail, treating performance as a one-time project rather than continuous engineering. Real performance work fixes the right things, then prevents regressions through monitoring and a fast audit cadence as the site evolves.

Reporting and ongoing monitoring

After the initial optimisation sprint we set up monitoring (CrUX dashboards, Lighthouse CI integrated with your deploy pipeline, real-user RUM via Sentry or DataDog) so regressions surface within hours. Optional retainers cover ongoing tuning as your site grows: new third-party scripts, new image-heavy pages, new sections that risk re-introducing slowness.

Who this is designed for

Ecommerce stores where every percentage point of page load time costs sales. SaaS marketing sites where Core Web Vitals affect organic rankings and ad quality scores. WordPress sites that have grown a tangle of plugins and now run slow on mobile. B2B brands launching new high-traffic content campaigns who need the site to handle the load without falling over.