Shopify speed optimization that hits sub-2.5s LCP
End-to-end Shopify store setup: from Figma to launch. Custom themes, product imports, payment + shipping config, App Store integrations, and a written 30-day launch SOW.
since 2020
vetted
enterprise
Trusted by 250+ brands across the US, UK, UAE & Europe
Where Shopify stores lose seconds, and what we do about it
Eight problems account for most of the load time on a typical Shopify store. Each one has a fix we run as standard.
- Restrictive themesPage builders and locked sections force compromises. We hand-build sections your merchandisers can actually edit.
- App bloat and conflictsEvery app adds scripts, rent and another thing to break. We replace what we can with native code and Shopify Functions.
- Slow load timesThird-party tags and unoptimised media push LCP past four seconds. We set a performance budget per template and hold it.
- Clunky checkoutExtra steps and missing wallets cost you completed orders. We tune checkout with extensions, Shop Pay and one-page flows.
- Scaling bottlenecksDrop days and catalogue growth expose theme limits. We build for the peak, not the average Tuesday.
- Painful admin UXIf changing a banner needs a developer, it does not get changed. We ship metafield-driven controls your team owns.
- No analytics baselineWithout clean events you cannot prove a lift. We instrument GA4 and server-side tracking before we touch the theme.
- SEO regressionsReplatforming without a redirect map loses rankings you paid years for. Every URL is mapped before launch.
Eight speed capabilities to hit sub-2.5s LCP
From theme code surgery to font loading, image optimization, third-party app audits, and JavaScript trimming. We hit Core Web Vitals with a written guarantee.
Theme code audit
Liquid optimization, render-blocking script removal, lazy-loading, critical CSS extraction, async font loading.
Lighthouse + CrUX
Real-user monitoring via Chrome UX Report, synthetic Lighthouse runs, WebPageTest waterfalls, ongoing dashboards.
Image optimization
Responsive images with sizes/srcset, WebP/AVIF, lazy-loading, CDN delivery, decode hints, blur-up placeholders.
App audit + slim
Identify the 3–5 third-party apps tanking your Lighthouse score, remove or replace with theme-native code.
Hydrogen / Oxygen
Shopify’s headless framework for sub-1.5s LCP on Plus stores. React Server Components, edge-first rendering.
Font loading
Self-hosted fonts, font-display:swap, font-subsetting, preload tags, FOUT/FOIT prevention.
CDN + edge
Cloudflare in front of Shopify CDN, image transforms, HTML caching at the edge, smart preloading.
30-day monitoring
Post-launch CWV dashboards, alerts on regressions, monthly Lighthouse audits, regression prevention CI.
How a speed engagement runs
Speed work is measured, not asserted. Every stage produces a number you can check yourself.
Measure field and lab
Stage 1
CrUX field data and Lighthouse lab runs together, because your real users and a synthetic test rarely agree.
Fix the critical path
Stage 2
Render-blocking resources, image pipeline, font loading and the apps injecting scripts into your head tag.
Re-measure and verify
Stage 3
Before and after on the same URLs and the same connection profile, with the methodology written down.
Monitor for thirty days
Stage 4
Field data lags. We watch for a month because a Tuesday Lighthouse score is not proof.
What a speed engagement covers
Written into the SOW before you sign, so there is no argument later about what was implied.
In scope
- Theme code audit and critical rendering path work
- Image format, sizing and lazy-loading pipeline
- App audit identifying what each installed app costs you in milliseconds
- Font loading strategy and CDN configuration
- Core Web Vitals work targeting LCP, INP and CLS
- Thirty days of field-data monitoring with a before and after report
Handled separately
- Rewriting third-party app code we do not control
- Content and image asset production
- Hosting migration, which is a separate headless engagement
Not exclusions on principle. Any of these can be scoped as its own engagement, priced on its own.
Three ways to attack a slow store, and what each one costs you
Three ways to attack a slow Shopify store. Only one of them survives contact with field data.
Install a speed app
Your volume is under roughly $2M and your checkout needs are standard.
The catch
Most of them defer scripts and call it a win. Field data usually does not move, and sometimes breaks.
Theme surgery
You need checkout control, B2B, multiple markets, or you have outgrown API limits.
The catch
Requires someone who can read the theme properly. It is engineering time, not a subscription.
Rebuild headless
You are running content-heavy or multi-brand experiences that Liquid makes painful.
The catch
You trade a speed problem for a hosting, build and staffing problem. Rarely the right first move.
What we run performance work with
Measurement first, then theme surgery, and headless only when Liquid has genuinely run out of room.
Measurement
- Liquid
- Online Store 2.0
- Hydrogen
- React
- Next.js
- JavaScript
- TypeScript
Theme
- Node.js
- PHP
- Python
- GraphQL
- Storefront API
- Shopify Functions
Media
- MySQL
- PostgreSQL
- MongoDB
Edge & headless
- AWS
- Google Cloud
- Kubernetes
Proof, not promises
Long-form case studies with the numbers behind them, next to the live stores we build and run. Filter to whichever kind of proof you came for.
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Miss Lamonique — Polish Health & Supplement Retailer for the UK Market
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Lead Apparel — B2B Corporate Merch Storefront + Launch Swag-Store Platform
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Social Proof & FOMO Sales Pop — Real-Time Activity Notification App for Shopify
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Transparent pricing. Pick the model that fits your stage.
Fixed-scope projects, ongoing retainers, or full-time dedicated teams. Whatever the engagement, you'll see the price before you sign: no hourly creep, no surprise change orders.
Fixed-scope build
- Fixed SOW & written deliverables
- 14–60 day hypercare included
- Clean code & documentation handover
- Easy off-ramp, no lock-in
Monthly partnership
- Dedicated PM + senior engineer
- Sprint cadence with weekly demos
- 2–8 A/B tests per month
- Unused hours roll 50% forward
Full-time pod
- Senior engineers full-time on your team
- Direct Slack & daily standups
- Reports to your CTO/Eng Lead
- Signed SLA & SOC2-aligned process
Not sure which fits?Book a free 30-min strategy call →
Six reasons brands stay with us after the numbers move
Most of our performance work turns into a retainer or a referral. These are the reasons clients give when we ask why.
- Shopify Partner since 2018Certified, with direct partner support channels when a build needs them.
- 250+ stores shipped since 2019Seven years of Shopify-specific pattern recognition, not general web work.
- A dedicated PM on every buildOne accountable owner, weekly written updates, no account-manager telephone game.
- Conversion-first, not pixel-firstDesign decisions are argued from revenue impact, and measured after launch.
- Transparent, fixed-scope pricingWritten scope and a fixed number before work starts. No surprise line items.
- You own the code, alwaysClean handover, documented, on your repos. Leaving is never held over you.
Questions we hear before every Shopify Speed engagement
Honest answers, including the ones most agencies dodge.
How fast can you make my Shopify store?
Most stores hit sub-2.5s LCP, CLS < 0.1, INP < 200ms in 10–15 business days. Plus stores with Hydrogen can hit sub-1.5s LCP.
Do you guarantee Core Web Vitals?
Yes: the SOW includes target LCP, CLS, and INP values. If we don’t hit them, we work for free until we do.
What if my store uses lots of apps?
We audit every third-party app for performance impact. We’ll recommend which to remove, replace with theme-native code, or load lazily.
Will speed improvements hurt my design?
No. We don’t cut features. We refactor how they load. Critical content loads first, decorative assets load after, third-party scripts get deferred.
What does speed optimization cost?
One-time sprint: $3K–$12K depending on store complexity. Monthly performance retainer: $1.5K–$6K/mo. ROI usually 2–5x in first quarter.
How do you measure success?
Lighthouse score 90+ on mobile, CrUX field data passing all three Core Web Vitals, ongoing dashboards. See our 12-point speed checklist →
