Shopify Store

Performance Optimisation

Faster pages on real phones. We cut theme weight, tame app scripts and fix Core Web Vitals so more visitors reach checkout.

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Overview

What is Performance Optimisation?

Performance optimisation is the work of making your store load and respond quickly for real shoppers, especially on mid-range phones and mobile networks. It covers images, fonts, theme JavaScript, third-party apps and how content is rendered.

Speed is a conversion lever. Every second saved on a product page shows up in bounce rate and add-to-cart rate.

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Common mistakes

These are the issues we see most often when brands start performance optimisation work.

  • Chasing a perfect lab score while real users stay slow.
  • Adding a speed app that injects more JavaScript.
  • Uploading full-size images and relying on the theme to shrink them.
  • Loading every app script on every page.

Outcomes

What Performance Optimisation delivers

Results we plan for

Faster pages on real phones. We cut theme weight, tame app scripts and fix Core Web Vitals so more visitors reach checkout.

What the work covers

Each phase has a clear owner, output and review.

How we work

Our approach

To get results, we focus on three things.

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  1. Start

    Measure field data

    We use real-user Core Web Vitals, not just lab scores, to find the pages and devices that matter.

  2. Deliver

    Remove before optimising

    Unused apps, duplicate scripts and oversized sections go first. Then we lazy-load, compress and defer the rest.

  3. Improve

    Guard the gains

    A performance budget and simple checks stop new apps or sections from undoing the work.

FAQ

Frequently asked questions

Will optimisation change my design?

How much faster will my store get?

Do you remove my apps?

Selected work

Results from stores we work with

Northwind Apparel

  • Shopify Store
  • CRO

A faster theme and a reward cart that lifted every basket

New OS 2.0 theme, trimmed app stack and GrowCart reward tiers.

Harbor Home

  • E-Commerce Growth

Furniture offers that close without a sitewide sale

Redesigned product pages and a HaggleFlow offer flow with floor prices.

Forge Supply Co.

  • Web Development

Wholesale quotes moved from email into Shopify

B2B catalog on Shopify Plus, QuoteRise forms and ERP sync.

Juniper Skincare

  • Data Analytics

One profit dashboard the whole team trusts

Tracking rebuild, cost model and ProfitDesk daily digest.

Illustrative results from EcomGrow client and app projects.

View case studies

Let’s grow your store together

Tell us where you want to be in twelve months. We will map the work to get there.

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They know Shopify from the inside. The new theme was faster, easier to edit and paid for itself in a quarter.

Maya Collins, Head of E-commerce, Northwind Apparel