If your Magento store is dragging, slow category pages, sluggish checkout, and poor Google PageSpeed scores, you are already losing revenue. Research consistently shows that every second of delay reduces eCommerce conversions. Our Adobe Commerce Certified team has delivered Magento performance optimisation for 250+ UK stores, diagnosing the real causes of poor performance and resolving them at the code level. No plugins stacked on top of plugins. No guesswork.
A slow Magento store is not just a technical problem it is a revenue problem. We identify exactly what is holding your store back, fix it at the root, and keep it running at its best long after the project is done.
Faster Pages, More Sales
Speed up your Magento store with bespoke optimisations targeting the changes that have the greatest impact on load time, bounce rate, and checkout completion.
Google-Ready Core Web Vitals
Meet Google's performance thresholds with targeted LCP, INP, and CLS improvements so your store ranks higher, loads faster, and delivers a better experience on every device.
A Clear Plan Before We Touch Anything
We audit your store first, diagnose the root causes, and present a prioritised roadmap. You know exactly what will be done and why, no surprises, no scope creep.
Ongoing Support After Every Project
Over 100 UK stores trust KiwiCommerce on an active monthly retainer. Once your performance work is complete, we stay on hand to monitor, maintain, and keep improving.
Many Magento performance problems are caused not by the platform itself, but by poorly coded or redundant third-party extensions. We carry out a full module audit to identify conflicts, deprecated code, and extensions that are adding weight without adding value, then rationalise your module stack.
Time to First Byte (TTFB) is the time it takes your server to begin responding to a request. A good TTFB is under 800ms; many poorly configured Magento stores sit well above this. We audit your hosting environment, PHP configuration, and server-side caching to bring TTFB down to a level that Google and your customers will notice.
Magento has powerful built-in caching, but it needs to be configured correctly to deliver its full benefit. We implement and fine-tune Varnish and Redis caching strategies that dramatically reduce server load and ensure pages are delivered quickly across every session.
Render-blocking JavaScript and oversized CSS files are among the most common causes of poor LCP scores on Magento stores. We minify, defer, and restructure frontend assets so your pages load progressively, showing content to shoppers as quickly as possible.
Large, unoptimised images are frequently the single biggest performance bottleneck on Magento product and category pages. We convert your image library to next-generation formats (WebP and AVIF), implement lazy loading, and ensure images are served at the correct resolution for each device.
Slow database queries slow everything downstream. Our team audits your database structure, indexing, and query patterns, identifying inefficiencies caused by third-party extensions, custom code, or a large product catalogue and implements optimisations that reduce server load and improve response times.
We do not guess. Every performance project at KiwiCommerce follows a structured process that ensures changes are evidence-based, risk-managed, and measurable.
We analyse your store using Google PageSpeed Insights, Lighthouse, and GTmetrix to establish a baseline across all key metrics. You receive a clear summary of where your store stands and the priority areas to address.
Our team carries out a deep technical review of your codebase, server configuration, database, and module stack. This goes beyond automated tools and identifies the root causes of your performance issues.
We present a prioritised action plan ranked by impact so you understand exactly what will be done, why, and what improvement to expect. No surprise charges, no scope creep.
All changes are built and tested on a staging environment first. Nothing is pushed to your live store until it has been reviewed and signed off by your team.
Once changes are live, we monitor your key metrics and confirm improvements have been achieved. We also offer ongoing retainer support to keep your store performing at its best.
There is no shortage of agencies that claim to offer Magento performance work. Here is what sets KiwiCommerce apart.
Our team holds official certifications from Adobe (as an Adobe Solution Partner) and is one of a small number of UK agencies to hold Hyvä Bronze Partner status. These are not marketing claims; they are industry-recognised qualifications awarded by the platform providers themselves.
KiwiCommerce's founder holds Magento Master recognition, awarded to fewer than 60 individuals worldwide for outstanding contribution to the Magento community. Our performance work draws on nearly a decade of deep platform expertise.
We do not optimise your store and disappear. Over 100 stores currently rely on KiwiCommerce for ongoing Magento maintenance and support. That long-term relationship means we understand how performance changes over time and how to keep stores running at their best.
We do not apply the same configuration to every site. Every performance project is bespoke, built around your store's codebase, hosting environment, and business requirements.
Hyvä is a modern Magento 2 frontend framework built to replace the outdated Luma theme. Where Luma relies on heavy legacy JavaScript that slows every page load, Hyvä strips that weight out entirely delivering dramatically faster pages, stronger Core Web Vitals scores, and a cleaner codebase that is far easier to maintain. As a Hyvä Bronze Partner, KiwiCommerce is one of a small number of UK agencies certified to develop and migrate stores to Hyvä.
Get in touch for a free, no-obligation Magento performance audit and find out exactly what is slowing your store down.
KIWI Commerce redeveloped my entire website, exactly to my requirements. They worked exactly along with my timeframe and were fantastic to work with. I would highly recommend this company. Thank you Sam and the team!
We brought KiwiCommerce in after a Magento update left our checkout noticeably slower. They diagnosed the issue quickly, explained everything clearly, and fixed it without any disruption to the live store. Exactly the kind of no-nonsense technical expertise we needed.
Working with Kiwi Commerce has been a very smooth experienc.Their team is responsive, knowledgeable, and always willing to go the extra mile. From development to ongoing support, everything is handled efficiently and with great attention to detail. Highly recommended.
What sets KiwiCommerce apart is that they explain what they are doing and why, not just send a bill. Our Magento store is now on their monthly retainer and performs consistently well. Knowing there is a certified UK team keeping an eye on it is worth a great deal.
Frequently Asked Questions
The clearest signs are slow page load times (above three seconds on mobile), a poor Google PageSpeed score (below 50 on mobile), high bounce rates on key pages, or a drop in organic rankings. You can get an initial read using Google PageSpeed Insights or Lighthouse, but these tools show symptoms, not causes. A proper technical audit will identify the root issues. We offer a free performance audit as a starting point.
Google targets a score of 90 or above across Core Web Vitals metrics for the best ranking benefit. In practice, many Magento stores with the default Luma frontend score between 30 and 60 on mobile, which puts them at a competitive disadvantage. Through bespoke performance optimisation or, where appropriate, a Hyvä migration, we typically achieve significant score improvements, though the exact outcome depends on your store's current state and hosting environment.
Yes. In most cases, meaningful performance improvements can be achieved without a full rebuild. Caching configuration, image optimisation, JavaScript restructuring, database tuning, and extension rationalisation can all be carried out on your existing store. A Hyvä theme migration is only recommended where the frontend itself is the primary constraint and the business case supports it.
It depends on the scope. A focused optimisation sprint targeting the highest-impact fixes typically takes two to four weeks. Larger projects involving database restructuring, full extension audits, or Hyvä migrations take longer and are scoped individually. We will always provide a clear timeline before any work begins.
No. All changes are made on a development or staging environment first. Your live store is not touched until every change has been tested and approved. We also recommend scheduling any go-live activity during lower-traffic periods as a precaution.
Costs vary depending on the complexity of your store and the scope of work identified in the audit. We provide fixed-price quotes after the technical diagnosis stage, so you have complete clarity before committing. Get in touch for a free audit, and we can give you an accurate picture.
Luma is Magento's default frontend theme. It relies on legacy JavaScript (KnockoutJS and RequireJS) that creates a significant overhead on page load. Hyvä is a modern, lightweight Magento frontend built on Alpine.js and Tailwind CSS, which removes much of that overhead. Stores migrated to Hyvä typically see substantial Core Web Vitals improvements. As a Hyvä Bronze Partner, KiwiCommerce is one of a limited number of UK agencies certified to deliver Hyvä migrations.