Google's Core Web Vitals are a confirmed ranking factor. Slow Shopify stores — heavy apps, unoptimised images, render-blocking scripts — suffer ranking penalties and high bounce rates that kill conversions. We fix every speed issue that's suppressing your rankings and costing you sales.
Google's Core Web Vitals update made page experience a direct ranking factor. Shopify stores with poor LCP, INP, or CLS scores are actively penalised in search rankings compared to faster competitors. Simultaneously, a 1-second delay in page load time reduces conversions by up to 7%.
Most Shopify speed issues come from the same sources: too many apps loading JavaScript, unoptimised images, render-blocking third-party scripts, and bloated themes. All of them are fixable.
Google uses LCP (Largest Contentful Paint), INP (Interaction to Next Paint), and CLS (Cumulative Layout Shift) as ranking signals. Pages that fail Core Web Vitals thresholds are ranked below pages that pass — all other factors equal.
Every app you install adds JavaScript that loads on every page load. A store with 15–20 apps can easily have 3–4MB of JavaScript loading on every visit — making pages slow regardless of theme or hosting.
More than 60% of ecommerce traffic is mobile. Google uses mobile-first indexing, meaning your mobile page speed directly determines your rankings. Slow mobile stores rank lower and convert less.
90-day comparison after Speed Optimisation for SEO
Real client data. Individual results vary based on niche competitiveness and starting point.
A proven, transparent process refined across 500+ Shopify projects.
We run a comprehensive speed audit — PageSpeed Insights, Core Web Vitals report, waterfall analysis, and JavaScript profiling — to identify every issue causing slowness.
We compress, convert to WebP, and implement lazy loading on all images — typically reducing page weight by 60–70% and improving LCP scores dramatically.
We audit every app's JavaScript impact, defer non-critical scripts, remove unused code, and implement render-blocking fixes to improve Time to Interactive.
We verify all three Core Web Vitals metrics pass Google's thresholds in lab and field data before marking the project complete.
No hidden extras. No upsells. Everything listed below is included in the service.
One-time speed optimisation with 30-day post-fix monitoring. Ongoing monitoring in monthly SEO packages.
Tell us about your Shopify store and we'll walk you through exactly what we'd do, what it would cost, and what results you can realistically expect. Zero pressure.
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Everything you need to know about Speed Optimisation for SEO.
Yes — Google's Core Web Vitals (LCP, INP, CLS) are confirmed ranking signals in Google's Page Experience system. Pages that fail Core Web Vitals thresholds are ranked below passing pages for identical queries. Page speed also affects bounce rate, which influences rankings indirectly through user engagement signals.
A score of 85+ on mobile is a strong target for Shopify stores. Most default Shopify themes score 30–50 on mobile before optimisation. After our speed optimisation, most stores reach 80–97. The specific impact on rankings depends more on Core Web Vitals pass/fail status than the raw score number.
The most impactful Core Web Vitals improvements on Shopify are: (1) image optimisation — compressing images and converting to WebP to improve LCP; (2) JavaScript deferral — fixing render-blocking scripts to improve INP; (3) layout stability fixes — eliminating elements that shift on load to improve CLS; (4) font optimisation — preloading web fonts to prevent text shift.
Speed optimisation involves code-level changes to your theme and adjustments to how apps load their scripts. We always work on a theme duplicate before going live, and test all changes thoroughly before deployment. Functionality is never compromised — only performance improved.
The average improvement across our speed projects is +52 points on mobile PageSpeed. Stores that start with scores of 20–45 typically reach 85–97 after optimisation. The exact improvement depends on your starting point — stores with more apps and unoptimised images tend to see the largest gains.
Each service works better alongside the others — see what fits your goals.