Shopify Speed Optimization for Slow Stores

Get a Speed Audit
See Our Shopify Work

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Shopify custom development services
custom Shopify development agency
Shopify Plus custom development experts

SPLIT Development finds what slows your Shopify store and fixes it in the theme code: unused apps and scripts, heavy images, render-blocking files and slow Liquid. You get Core Web Vitals and load times before and after each round of work.

150+

Projects delivered

7+

Years experience

custom Shopify development company

What Shopify Speed Optimization Includes

/01

Speed audit

  • Core Web Vitals report for home, collection, product and cart pages on mobile and desktop
  • List of apps and third-party scripts with the load time each one adds
  • Prioritized fix list with the expected effect of each fix

/02

Theme and code fixes

  • Unused app code and scripts removed from the theme
  • Liquid loops and sections rewritten to render faster
  • CSS and JavaScript deferred or split so the first screen loads first

/03

Images and media

  • Images resized and served in modern formats, with lazy loading below the first screen
  • Fonts, videos and sliders made lighter on mobile
  • Layout shifts fixed so buttons and images don’t jump while the page loads

How We Speed Up Shopify Stores

We measure first, fix what has the biggest effect, then measure again.

custom Shopify discovery

Real-user data

We use Core Web Vitals from Search Console and PageSpeed Insights, not only lab scores.

custom business logic in Shopify

Biggest wins first

Fixes are ranked by their effect on load time and by how long they take to make.

transparent custom development process

Features kept

Apps are removed only when you approve, and needed features are rebuilt in the theme.

scalable custom Shopify architecture

Before and after

Each round of work ends with a report of the same pages measured the same way.

Standards for Every Speed Fix

How we keep the store working while we make it faster

structured custom Shopify planning

Test theme first

Changes go to a duplicate theme first and reach production after your approval.

clean custom Shopify code

Code review

A tech lead reviews every change before it reaches your live theme.

stable Shopify integrations and functionality

Tracking checked

Analytics, pixels and consent tools are checked after each release.

performance optimization in custom Shopify development

Zero downtime

Releases are planned so the store keeps selling while new work goes live.

QA and validation for custom Shopify builds

SEO-safe releases

Redirects, canonical tags and structured data are checked after every release.

post launch support for custom Shopify development

Honest reports

Real-user data is shown next to lab scores, with an explanation of what each change means for your store.

Our Speed Optimization Process

From the first check to a faster live store

01

custom Shopify audit and discovery

Free store review

We run a first speed check and look at your apps before you sign anything.

02

custom Shopify roadmap

Full audit

You get Core Web Vitals, the slowest pages and a ranked list of fixes.

03

build custom Shopify solution

Fixes on a copy

Changes are made on a duplicate of your live theme.

04

QA and launch for custom Shopify development

Measure and publish

We compare before and after, then publish with your approval.

05

support and iteration for custom Shopify builds

Monitoring

We check Core Web Vitals again once real users have visited the faster store.

Who Needs Shopify Speed Optimization

Stores where slow pages cost sales or ad budget. Agencies can order the same work under their own brand through white label Shopify development.

brands needing custom Shopify store development

Stores with many apps

Shops where years of installed and removed apps left scripts in the theme.

Shopify Plus custom development for complex operations

Brands running paid ads

Stores paying for traffic that lands on slow mobile product pages.

companies needing Shopify custom app development

Stores failing Core Web Vitals

Sites marked as poor or needing improvement in Search Console.

custom Shopify theme development for growing brands

Stores after a redesign

Shops that got slower after a new theme, new sections or heavy media.

custom Shopify development services for ecommerce brands

Shopify Speed Optimization FAQ

How much does Shopify speed optimization cost?

At SPLIT Development, speed work is billed from $35 per hour. You get an estimate after a free store review and approve the hours before work starts.

Why is my Shopify store slow?

The most common causes are app scripts loading on every page, large images, heavy fonts and video, and theme code that renders more than the page needs.

Will removing apps break my store?

Apps are removed only after you approve, and any feature you still need is rebuilt in the theme or replaced with a lighter option.

What is a good Shopify speed score?

Google’s Core Web Vitals pass when Largest Contentful Paint is under 2.5 seconds, Interaction to Next Paint is under 200 milliseconds and Cumulative Layout Shift is under 0.1. These real-user metrics matter more than the speed score in the Shopify admin.

Does store speed affect SEO?

Yes. Core Web Vitals are part of Google’s page experience signals. Speed alone won’t move a page to the top, but a slow store loses visitors before the page loads.

How long does Shopify speed optimization take?

Timing depends on the number of fixes and comes with the estimate. Real-user data in Search Console updates over the 28 days after release.