Shopify speed optimisation
We make slow Shopify stores load fast on phones, without breaking the design.
- Theme code review and clean-up (unused scripts, duplicate fonts, render-blocking CSS)
- Image compression, correct sizing and lazy loading
- App audit, so you know which apps are slowing the store and which are safe
- Core Web Vitals fixes (LCP, CLS, INP) measured on real phones
- Before and after PageSpeed reports you can keep
Why Shopify stores get slow
Most stores start fast. Then the apps arrive. Each one adds its own script, and many keep loading even after the app is removed. Add a few oversized hero images, a slider, three font families and a theme that loads everything on every page, and a store that should load in two seconds takes eight.
Google measures this, and so do your customers. Core Web Vitals (how fast the main content appears, how much the page jumps around while loading, and how quickly it responds to a tap) have been part of how Google ranks pages since 2021. Shoppers on phones are less patient than Google.
What we do
We start with a full measurement: PageSpeed Insights, Lighthouse on a real mobile profile, and the Shopify theme inspector. That gives us a list of the actual causes, in order of impact. Then we fix them one by one, on a copy of your theme, and measure again after each change. Changing one thing at a time is slower, but it is the only way to know what worked and to avoid the layout shifts that a bulk “optimise everything” plugin causes.
Typical fixes: removing leftover app code from theme.liquid, deferring scripts that are not needed above the fold, serving images at the right size for each screen, replacing a heavy slider with a lightweight one, preloading the hero image and the main font, and trimming CSS that no page uses.
Check your store first
Run your store through our free website grader to see the mobile score, or use the Shopify app detector to list every app your store loads. The apps list is usually where the answer is.
Packages
Basic covers theme clean-up and image optimisation for a store with few apps. Standard adds the app audit, Core Web Vitals fixes and a written report. Premium is for large stores with many apps and custom code, and includes a 30-day re-check after you publish.
Questions people ask
Will you break my theme?
No. We never touch the live theme. All work happens on a duplicate. You preview it, and you publish it yourself when you are happy. If anything looks wrong, the live store is untouched.
What score will I get?
We promise a clear, measured improvement, not a fixed number. The apps you choose to keep set the ceiling, and we tell you which ones cost the most. You get the before and after reports either way.
What do you need from me?
Collaborator access to your store through our Shopify Partner account. We never ask for your password.
How long does it take?
Basic jobs take 2 to 3 days. A full store with many apps takes about a week.
Find out what is holding your site back
Paste your website address. Within one working day you get a written speed and SEO report: what is slowing it down, what Google cannot see, and what we would fix first.
- PageSpeed and Core Web Vitals on mobile and desktop
- The apps and scripts costing you the most load time
- Titles, meta, structured data and indexing problems
- A short fix list in priority order, with prices