Make your Shopify store measurably faster.
Every second of load time costs you orders, most of all on mobile. WEB4PRO re-engineers Shopify stores for speed: we fix Core Web Vitals, clear app bloat and rebuild heavy themes, so more of the traffic you already pay for turns into revenue.
In shortWEB4PRO makes Shopify stores measurably faster by fixing Core Web Vitals, app bloat and heavy themes, with a clear before/after you can verify.
Engineered for Shopify Speed & Revenue
Shopify Speed & Core Web Vitals
We audit your store and fix what actually slows it down (LCP, INP and CLS) and hand you a clear before/after report.
App Bloat & Code Cleanup
Too many apps (and the leftover code of the ones you already removed) quietly drag every page down. We find and clear it safely.
Theme & Front-End Speed
Heavy themes, render-blocking scripts and unoptimised images, fixed at the code level, not with yet another plugin.
A quarter century of eCommerce engineering &
measurable store growth
95% of our clients return for ongoing store optimization and growth. We engineer Shopify stores to pass Google Core Web Vitals on real user field data — fixing app bloat and theme bottlenecks without breaking existing functionality.
Real Field Results & Revenue Recovered
Baby Braithwaite
A luxury newborn & kids Shopify store, re-engineered to pass all three Core Web Vitals thresholds on mobile.
"Mobile conversion increased by over 24% in the first month without changing our design."
— Chadd Myers, Managing DirectorSwimwear World
A high-volume swimwear Shopify store, rebuilt on an optimized theme and kept permanently in the green.
"Our paid ad ROAS jumped immediately after the Core Web Vitals audit and cleanup."
— Elena Rostova, VP of GrowthWant your store this fast?
See exactly what's slowing down your Shopify store. We audit your apps, theme code and Core Web Vitals, and hand you a clear before/after report.
- ✓ Pass Core Web Vitals on real mobile traffic
- ✓ Remove ghost code & unused apps safely
- ✓ 100% storefront & design stays intact
How a Speed Engagement Works
Audit
We run a full technical audit: Lighthouse / PageSpeed, Core Web Vitals, apps, third-party scripts and theme code. You get a clear picture of what's slow and why.
Optimize
We fix the causes (app and ghost-code cleanup, Liquid refactoring, images, render-blocking resources) without breaking your design or features.
Report & Monitor
You get a before/after report with live PageSpeed results, plus optional ongoing monitoring so speed doesn't creep back over time.
Anatomy of a Slow Shopify Store
Most slow Shopify stores are slow for the same handful of reasons. Here's what we usually find in an audit, and what we do about it.
Too many apps
Each app injects its own scripts and network requests. Stacking up 20+ apps chokes the browser main thread and noticeably slows down every page.
Audit each app's real performance cost; remove or replace the heaviest with clean, native theme code.
Ghost code from removed apps
Uninstalling an app from Shopify admin rarely removes its code. Leftover snippets and orphaned scripts keep loading quietly on every visit for months.
Track down and surgically clear the orphaned code safely without losing active store features or tracking.
Heavy hero images
Oversized, unoptimised images delay the largest contentful paint (LCP), freezing the visual load and pushing mobile performance over the red line.
Convert to WebP/AVIF, configure exact responsive sizing (srcset), and preload the critical LCP image.
Zero Risk. Zero Downtime.
Guaranteed Results.
We know merchants fear broken checkouts or botched themes. We engineered our entire speed workflow to eliminate risk completely.
1. Safe Theme Sandbox
We never touch your live theme. All code refactoring, app removal, and script optimizations occur in a duplicate sandbox theme. Your live customers experience zero disruptions.
2. Zero Password Sharing
You never share administrative passwords. We request standard Shopify Collaborator account access with strictly limited permissions (Themes & Apps only, no billing or customer data).
3. Core Web Vitals Pass Guarantee
We guarantee measurable Core Web Vitals field and lab improvements. If we don't hit agreed speed benchmarks, we continue engineering at zero additional cost until we do.