Shopify Performance Engineering

Everything that makes your Shopify store fast.

Speed isn't one fix: it's the apps, the theme code and the way the page is built. We work across all three, and we measure the result, so you can see the difference instead of taking our word for it.

What is Shopify performance optimisation? It is the engineering work of making a Shopify store load faster and pass Core Web Vitals, by fixing apps, theme code and images at the source.
✓ 100% Storefront Safe: Zero theme redesign, all apps & checkout intact.
✓ Real Field Telemetry: Tested against Chrome UX Report & mobile shoppers.
✓ Code-Level Engineering: Pure Liquid & JS optimizations, no cosmetic caching.
12-Point Audit Protocol

Our 12-Point Shopify Speed Checklist

Every audit runs through the same checklist, so nothing that slows your store gets missed.

01
Core Web Vitals: LCP, INP, CLS (field + lab)
02
App audit: every app's real performance cost
03
Ghost code from removed apps
04
Render-blocking CSS & JavaScript
05
Critical CSS inlined for the first paint
06
Image optimisation: WebP/AVIF, sizing, srcset
07
Lazy loading below the fold
08
LCP element preloaded
09
Font loading: preconnect/preload, font-display, subsetting
10
Liquid & DOM refactoring
11
Third-party scripts: analytics, chat, pixels
12
CDN / Storefront Renderer & caching alignment
Supported Ecosystem

The Stack We Work In

From standard Liquid storefronts to enterprise Shopify Plus and Headless Hydrogen architectures.

Shopify
Shopify Plus
Liquid
Core Web Vitals
Lighthouse / PageSpeed
Headless (Hydrogen)
Performance Work

Real Field Results & Revenue Recovered

Luxury Kids eCommerce CWV: Passed

Baby Braithwaite

A luxury newborn & kids Shopify store, re-engineered to pass all three Core Web Vitals thresholds on mobile.

Recovered mobile checkout revenue
+$114k
+24.6% CVR
LCP 1.3s
INP 79ms
CLS 0.01

"Mobile conversion increased by over 24% in the first month without changing our design."

— Chadd Myers, Managing Director
Read full case study →
High-Volume Fashion CWV: Passed

Swimwear World

A high-volume swimwear Shopify store, rebuilt on an optimized theme and kept permanently in the green.

Mobile ad bounce rate reduction
-38.4%
+18.2% ROAS
LCP 1.8s
INP 169ms
CLS 0.00

"Our paid ad ROAS jumped immediately after the Core Web Vitals audit and cleanup."

— Elena Rostova, VP of Growth
Read full case study →
GET SAME RESULTS

Want 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
Get your speed audit → Free diagnostic within 5 business hours · No commitment

Ready to speed up your store?

Start with a Shopify speed audit, and we'll show you exactly what's costing you conversions.

Get your speed audit
Ask an Engineer