Slow Shopify stores lose sales every second. Get professional, code-level speed optimisation — image compression, deferred scripts, lazy loading, and unused-code cleanup — targeting 80–100 scores on Google PageSpeed Insights.
I Will Optimise Your Shopify Store Speed & Core Web Vitals
Core speed optimisation for a single Shopify store — ideal for straightforward setups needing a solid performance baseline.
- Image compression and format optimisation
- Minimise HTTP requests
- Defer and async CSS & JavaScript loading
- Lazy loading for images and media
- Basic unused app & theme code cleanup
- Google PageSpeed Insights score improvement
Extended optimisation targeting stronger PageSpeed scores — best for stores with moderate theme complexity or prior app bloat.
- Everything in Starter
- Deeper unused-code and legacy-app script removal
- Advanced render-blocking resource resolution
- GTmetrix performance review included
- Targeting 80+ Mobile / 90+ Desktop PageSpeed scores
- Post-delivery order chat support
Full-scope speed overhaul for stores with heavy themes, multiple integrations, or ambitious performance targets.
- Everything in Boost
- Comprehensive theme-level Liquid & JavaScript audit
- Full Core Web Vitals optimisation (LCP, CLS, FID)
- Targeting 90+ Mobile / 95+ Desktop PageSpeed scores
- Google PageSpeed Insights & GTmetrix both reported
- Priority order chat support throughout delivery
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Key details about this service to help you decide. Generated by Zinn Hub, not the seller.
Value Position
Target Speed Score
Optimisation Method
Access Required
Turnaround & Revisions
What You'll Receive
Full Description
A slow Shopify store is silently costing you sales. Every extra second of load time increases bounce rates, damages your search rankings, and erodes customer trust before a single product is viewed. If your store is sluggish on mobile or desktop, the fix is not a plugin — it is professional, hands-on code optimisation carried out by an experienced team who understand Shopify's architecture inside and out.
That is exactly what we deliver at Zinn Digital. With over five years of dedicated Shopify performance work, our London-based team applies manual, code-level techniques to make your store measurably faster and keep it that way — no bloated apps, no temporary patches, no shortcuts.
**What is included in every package:**
Each optimisation engagement covers the core pillars of Shopify speed improvement. We compress and properly format images so they load quickly without sacrificing visual quality. We minimise HTTP requests to reduce the number of round-trips between your browser and Shopify's servers. CSS and JavaScript are deferred and set to load asynchronously, eliminating render-blocking resources that stall your page. Lazy loading is implemented for images and media so content below the fold does not slow down your initial load. Finally, we audit and clean up unused app code and theme bloat left behind by previously installed apps — one of the most overlooked causes of Shopify slowness.
The result is a leaner, faster store with improved Google PageSpeed Insights scores across both mobile and desktop, better Core Web Vitals, and a smoother experience for every visitor.
**How it works:**
After placing your order, simply send us your Shopify store URL and grant Collaborator Access. We will carry out a full performance audit before beginning work and communicate via the order chat throughout. All changes are made at the code level within your existing theme — nothing is installed that you do not need.
**Who this is for:**
This service is ideal for Shopify merchants of any size who are experiencing slow load times, poor PageSpeed scores, high bounce rates, or a drop in organic search performance. Whether you are running a brand-new store or an established shop with years of accumulated theme code, our optimisation process is tailored to your specific setup.
**Why choose Zinn Digital:**
Our approach is manual and professional — we do not rely on generic speed apps that promise results but add more code weight. Every optimisation is permanent and built to last, meaning you will not need to revisit the same issues every few months. We have five or more years of hands-on Shopify experience, we deliver on time, and we remain available via the order chat for post-project questions.
Select the package that matches the scope of your store and let us get to work.
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Compare Packages
| Feature | Starter | Boost | Premium |
|---|---|---|---|
| Delivery Time | 2 days | 3 days | 5 days |
| Revisions | 1 | 2 | 3 |
| Image compression and format optimisation | ✓ | ✕ | ✕ |
| Minimise HTTP requests | ✓ | ✕ | ✕ |
| Defer and async CSS & JavaScript loading | ✓ | ✕ | ✕ |
| Lazy loading for images and media | ✓ | ✕ | ✕ |
| Basic unused app & theme code cleanup | ✓ | ✕ | ✕ |
| Google PageSpeed Insights score improvement | ✓ | ✕ | ✕ |
| Everything in Starter | ✕ | ✓ | ✕ |
| Deeper unused-code and legacy-app script removal | ✕ | ✓ | ✕ |
| Advanced render-blocking resource resolution | ✕ | ✓ | ✕ |
| GTmetrix performance review included | ✕ | ✓ | ✕ |
| Targeting 80+ Mobile / 90+ Desktop PageSpeed scores | ✕ | ✓ | ✕ |
| Post-delivery order chat support | ✕ | ✓ | ✕ |
| Everything in Boost | ✕ | ✕ | ✓ |
| Comprehensive theme-level Liquid & JavaScript audit | ✕ | ✕ | ✓ |
| Full Core Web Vitals optimisation (LCP, CLS, FID) | ✕ | ✕ | ✓ |
| Targeting 90+ Mobile / 95+ Desktop PageSpeed scores | ✕ | ✕ | ✓ |
| Google PageSpeed Insights & GTmetrix both reported | ✕ | ✕ | ✓ |
| Priority order chat support throughout delivery | ✕ | ✕ | ✓ |
Portfolio
Examples of the seller's work related to this Zinn.
Optimise Your Shopify Store Speed & Core Web Vitals
Optimise Your Shopify Store Speed & Core Web Vitals
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Frequently Asked Questions
We require Shopify Collaborator Access to your store and your store URL. Collaborator Access is a secure, permission-based access method built into Shopify — you control exactly what we can see and edit, and you can revoke it at any time after the work is complete.
We work within your existing theme. Where possible we duplicate the theme and apply changes to the copy first so you can review before going live. If your plan does not support theme duplication, we will discuss the safest approach via the order chat before making any changes.
Our optimisations are code-level and permanent. They will not revert unless you install new apps or make significant theme changes that introduce new bloat. We focus on lasting results rather than quick fixes that degrade over time.
Target scores depend on your current theme, installed apps, and media setup — which is why scores vary by package and store. The Boost package targets 80+ Mobile and 90+ Desktop; the Premium package targets 90+ Mobile and 95+ Desktop. Starter delivers a meaningful improvement from your current baseline. Stores with very heavy third-party apps running persistent scripts may have a lower ceiling regardless of optimisation.
We use Google PageSpeed Insights and GTmetrix. These are the industry-standard tools for measuring real-world load performance, Core Web Vitals, and identifying specific bottlenecks. GTmetrix reporting is included from the Boost package upward.
No. We only work within the theme code — Liquid templates, JavaScript, CSS, and asset files. Your products, collections, pages, and store settings are never altered.
Each package includes revision rounds (see package details). If the results fall short of what was clearly scoped, raise it via the order chat and we will review and address the specific issues within the agreed revision allowance.
Yes — we work with Shopify's native themes (Dawn, Debut, Debut legacy, etc.) as well as popular third-party themes. If you are using a highly customised or page-builder-heavy theme, mention this in your order requirements so we can confirm scope before work begins.
Customer Reviews
See what our customers say about this Zinn
I had an excellent experience with this service. Communication was clear and professional at all times, and the work was delivered on time with great attention to detail. I definitely recommend their services and would gladly work with them again in the future.
I'm genuinely blown away. Zinn Digital is an absolute wizard. My store was running slow, and I honestly thought it was just "normal" for Shopify. A few hours later, this guy turned it into a rocket ship. The difference is insane, pages load instantly, the site feels smoother, and the overall user experience is night and day. If you think your store is fine, wait until Zinn Digital touches it. Unreal results. 10/10.
I had a great experience working on optimizing my website. They quickly identified performance issues, improved loading speed, and made the site feel much smoother and more professional. Communication was clear, updates were consistent, and they explained every change in simple terms. My website now runs faster and looks more polished. Highly recommend
I had an excellent experience working with this seller. They optimized my Shopify store with great attention to detail and explained everything clearly. Communication was smooth, fast, and professional. My store now runs much better, and I feel more confident managing it. Highly recommended!
Took my website from slow to lightning-fast in just a few hours. Clear communication, excellent expertise, and incredibly fast delivery. Thank you very much, highly recommend this freelancer to everyone!
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