Speed optimisation
Shopify speed optimization agency in the USA: Core Web Vitals fixed in code, not with another app.
Stop losing sales to slow load. Real code fixes to Core Web Vitals, store loading time and Shopify website performance.
5.0 on Shopify Partners · Premier Verified on Clutch
Who this is for
Signs you need a Shopify performance audit
Mobile
Mobile scores are red
Desktop looks fine, but mobile PageSpeed sits in the 20s and that's where most of your traffic actually shops.
Bounce
Shoppers leave before load
Analytics shows high exit rates on landing, meaning people are paying to arrive and leaving before they see anything.
Bloat
Apps are piling up
Reviews, popups, upsells and trackers each added a script, and nothing was ever removed after the trial ended.
Media
Images load heavy
Full-size hero files and unoptimised product media are pushing page weight far past what a fast store should carry.
Checkout
Cart feels sluggish
Adding to cart, opening the drawer, and moving to checkout all lag, and that friction lands right before payment.
Peak
Sales days slow you down
Traffic spikes during launches and campaigns turn an already slow store into a stalled one, exactly when it costs most.
Measured on live stores
Five client stores, 30 days of real visitors, all three Core Web Vitals in the green.
What visitors actually experienced last month on stores we run — the number Google ranks on, not a Lighthouse estimate.
| Client store | LCP, p75 | LCP, 30-day change | INP, p75 | CLS | Core Web Vitals |
|---|---|---|---|---|---|
| Store A | 1.48 s | 3% faster | 88 ms | 0.00 | Good on all three |
| Store B | 1.30 s | 44% faster | 96 ms | 0.06 | Good on all three |
| Store C | 1.79 s | 2% faster | 104 ms | 0.00 | Good on all three |
| Store D | 1.56 s | 3% faster | 184 ms | 0.00 | Good on all three |
| Store E | 1.37 s | 11% faster | 80 ms | 0.01 | Good on all three |
Source: each store’s Shopify admin, Web Performance card, 75th percentile over the previous 30 days, read on 26 September 2026. Google’s thresholds for “good” are LCP at or under 2.5 seconds, INP at or under 200 milliseconds and CLS at or under 0.1. These are client stores we build or maintain; they are not named here. Field data from real visitors on real devices, not a lab score.
What’s included
Shopify site speed optimization solutions we offer
Every engagement is scoped around your store, not a fixed package. Here’s the full range of what we fix. Need a full rebuild instead of a tune-up? See our development service .
Core web vitals optimization
LCP, INP and CLS brought into passing range on real device data, not just lab scores.
Theme code refactor
Bloated Liquid, duplicate sections and legacy code cleaned out of your existing theme.
App audit & removal
We map every app to its script weight, then remove or replace what isn't earning its cost.
Image & media pipeline
Responsive sizing, next-gen formats and proper lazy loading across every template.
Javascript & script control
Third-party tags deferred, bundled or removed so they stop blocking your first paint.
Font & css delivery
Critical CSS inlined, unused rules stripped, and fonts preloaded to stop layout shift.
Mobile performance tuning
Optimised for mid-range phones on real networks, where the majority of your sessions happen.
Cart & checkout speed
Faster add-to-cart, drawer and checkout transitions so friction disappears near the payment step.
Collection & search speed
Filtering, pagination and search results tuned to respond instantly on large catalogs.
Ongoing speed monitoring
Monthly checks and alerts so a new app or campaign asset never quietly undoes the work.
Shopify conversion rate optimization
Cut your store loading time to under two seconds
We fix speed at the code level, theme refactoring, script control and media pipelines, not by installing another optimizer that adds weight of its own. Built for teams whose traffic is already there and whose store is losing it on load.
- 400+
- Stores Optimized
- 3wks
- Avg. Turnaround
- 90+
- Lighthouse Target
Shopify
Google Analytics
Tag Manager
Search Console
Hotjar
Lighthouse
Core web vitals
Shopify website performance on every template
Homepage scores mean little if your product and collection pages still crawl. We optimise every template a customer can enter through, then verify on real devices and real networks before anything goes live.
- 90+
- Lighthouse Baseline
- 0
- Downtime On Deploy
- Tag Manager
- Search Console
- Hotjar
- Lighthouse
PageSpeed Insights
Semrush
Why Aqsa
Why brands choose us for Shopify performance optimization
Here’s what changes when a store is engineered for performance instead of patched with another app.
Specialist
Shopify-only engineers
We work exclusively inside Shopify and Shopify Plus themes, so fixes are native to the platform and safe to maintain.
Measured
Field data, not lab scores
We optimise against real user metrics from your own traffic, because a perfect lab score with slow shoppers changes nothing.
Revenue
Tied to conversion
Every change is measured against conversion rate and bounce, so speed work is judged on revenue, not just milliseconds.
How we work
Our Shopify Speed Optimization Process
A six-step system that takes a store from audit to verified results with nothing left to guesswork, so you always know what’s next and why.
Shopify performance audit
We benchmark every key template on real devices, capture field data, and identify exactly what is costing you load time today.
Week 1Fix plan and priorities
Findings are ranked by impact against effort, so the heaviest wins land first and you see movement before the work is finished.
Week 1App and script cleanup
Unused apps are removed, third-party tags are deferred or replaced, and the render-blocking chain is cut back to essentials.
Week 1–2Code and media optimization
Theme code is refactored, critical CSS is inlined, fonts are preloaded, and images move to a responsive, next-gen pipeline.
Day 3–4Testing and verification
Every template is retested across devices, browsers and network speeds to confirm gains are real and nothing broke on the way.
Day 4–5Launch and monitoring
Changes go live with your theme backed up, then we monitor scores and conversion so new apps or assets never undo the work.
Day 5Proof
Real builds. Verified numbers.
Every number here is verified with the brand it belongs to.
- Read the case study
Gene Juarez
The Zenoti booking integration most agencies declined — retail and salon booking unified on Shopify Plus.
- Read the case study
GetKif
Figma to fully custom Shopify theme: pixel-perfect, fast, and editable end-to-end from the Theme Customizer.
Frequently asked questions.
How much faster will my store actually get?
It depends on where you're starting. Most stores we take on sit between 20 and 45 on mobile and land in the 70–90 range afterwards, with LCP under 2.5 seconds. We give you a specific projected range after the audit, before you commit to anything.
Do you use a speed optimization app?
No. Speed apps add another script to a store that already has too many. Every fix we make is at the theme and code level, so the improvement stays after we're gone and nothing depends on a monthly subscription.
Will optimization break my theme or apps?
We duplicate your theme and work on the copy, test every template across devices and browsers, and only publish once everything is verified. Any app we recommend removing is discussed with you first, never quietly deleted.
How long does the work take?
Three weeks for a typical store: one week for audit and cleanup, one for code and media work, one for testing and launch. Larger catalogs and heavily customised themes can run four to five weeks, and we'll say so upfront.
Does speed really affect conversion rate?
Yes, most clearly on mobile and on paid traffic, where visitors arrive with low patience and no loyalty. We track conversion rate and bounce alongside speed metrics so you can see the commercial result, not just the score.
What does Shopify speed optimization cost?
Most projects fall between $3k and $12k depending on template count, catalog size and how customised the theme is. You get a fixed scope and a fixed number in writing before work starts — no hourly billing surprises.
Can you optimise a custom or headless build?
Yes. We work across standard themes, heavily customised builds and headless Shopify storefronts. Headless projects are scoped separately since the fixes live in the frontend framework rather than in Liquid.
Will the results last after you finish?
The code-level work holds. What erodes scores over time is new apps, new tracking tags and unoptimised campaign images. Our monitoring retainer catches those within days instead of months.
What do you need from us to start?
Collaborator access to your store, access to your analytics, and a list of apps you consider non-negotiable. That's enough for us to run the audit and come back with a plan.
Start a project
Request a project proposal?
Got a project in mind?
Shopify Plus experts
Let's talk Shopify, Shopify Plus and the store you actually want.
An accredited Shopify Plus agency that designs, builds, migrates, supports and grows stores for brands that have outgrown templates. Ready when you are: talk to an engineer about the project.
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