Shopify Speed Optimisation

We target a mobile Lighthouse performance score of 80+ and desktop of 90+ for our clients' stores. A score above 80 on mobile correlates strongly with improved Core Web Vitals, which Google uses as a ranking factor. Starting point varies, we've seen stores come to us with scores of 15–30 and leave with scores of 80–95.

The most common culprits are excessive third-party apps injecting scripts into the storefront, unoptimised images (too large, wrong format, not lazy loaded), render-blocking JavaScript, and bloated theme code. Our audit process identifies exactly what's slowing your store down before we implement any fixes.

Yes, Core Web Vitals (LCP, FID/INP, and CLS) are a confirmed Google ranking factor under the Page Experience signals. Improving your scores can give you an edge in competitive search results, particularly for mobile searches where Google's mobile-first indexing makes performance more important than ever.

Not necessarily. In many cases we can significantly improve performance through code optimisation, image improvements, and app auditing without rebuilding the theme. However, if your theme is heavily modified with legacy code, a fresh custom theme build may be the most cost-effective path to a 90+ score.

Most clients see measurable conversion improvements within 30 days of go-live following our optimisation work. The magnitude depends on how slow the store was before. We track conversions, bounce rates, and revenue per session before and after to quantify the impact.

Yes. Every speed optimisation engagement starts with a thorough performance audit. We run your store through Google PageSpeed Insights, Lighthouse, and WebPageTest across multiple device types and connection speeds. We then present a prioritised list of issues with projected impact before any development work begins.