Speed Optimisation

Shopify speed optimisation: faster pages without losing what sells

Q: Why is my Shopify store slow?

Most often apps, images and theme code: scripts from installed apps loading on every page, images larger than the screen, and theme code nobody trimmed. A real-user Core Web Vitals report shows which pages are slowest and why.

Q: Does page speed actually affect sales?

Yes, most visibly on mobile, where a slow product page loses shoppers before they see the product. Speed is also part of how Google assesses pages, so it affects how much traffic arrives in the first place.

Q: Do we have to remove apps to make the store faster?

Sometimes, but rarely the ones that earn money. Most of the gain comes from removing apps nobody uses, deferring scripts the first view does not need, and replacing heavy apps where Shopify now has a native feature.

Q: How do we stop the store getting slow again?

Agree a performance budget and check against it whenever something is added. We put performance targets in the contract, so speed is maintained rather than fixed once.

A slow Shopify store is usually slow for a handful of reasons: apps loading scripts on every page, images served larger than the screen needs, and theme code that was never trimmed. The cost lands hardest on mobile, where a slow product page loses shoppers before they see the product. Making a store fast rarely means removing features. It means loading only what each page needs, when it needs it.

Get a Free Shopify Audit →See Your Revenue Leaks

<2s

LCP on product pages, even with 80+ high-resolution images

100%

Core Web Vitals green across catalogue pages, at any traffic level

Why It Happens

What usually slows a Shopify store down.

App bloat

Every installed app can add scripts to every page, including apps the team stopped using months ago.

Oversized media

Product images and video served at desktop size to phones, without modern formats or lazy loading.

Unused theme code

Sections, fonts and scripts kept from a theme's demo, loading on pages that never use them.

Third-party tags

Analytics, chat and marketing pixels firing before the page is usable.

What We Fix

How we make it fast, and keep it fast.

Measure on real devices

Core Web Vitals from real visitors, by page type and device, not only a lab score on a fast laptop.

Audit apps and tags

Remove what is unused, defer what the first view does not need, and replace heavy apps where a native feature does the job.

Fix media and theme code

Images sized for the screen and served in modern formats, unused code removed, critical content loaded first.

Hold the line

A performance budget, checked whenever an app, tag or campaign is added, so the work is not undone a month later.

Free Shopify audit

Want to know how your store does on speed?

We'll audit your live store across conversion, mobile, checkout, speed and AI visibility, and send you the fixes ranked by impact. Free, within 48 hours, no access needed.

Get my free audit →Talk to Ecommerce Engineers

Operator Questions

What store owners ask us.

Why is my Shopify store slow?

Most often apps, images and theme code: scripts from installed apps loading on every page, images larger than the screen, and theme code nobody trimmed. A real-user Core Web Vitals report shows which pages are slowest and why.

Does page speed actually affect sales?

Yes, most visibly on mobile, where a slow product page loses shoppers before they see the product. Speed is also part of how Google assesses pages, so it affects how much traffic arrives in the first place.

Do we have to remove apps to make the store faster?

Sometimes, but rarely the ones that earn money. Most of the gain comes from removing apps nobody uses, deferring scripts the first view does not need, and replacing heavy apps where Shopify now has a native feature.

How do we stop the store getting slow again?