Speed is no longer an option in today’s fast-paced eCommerce landscape; it’s a business imperative.
The speed of page loads can literally make or break a customer’s success or failure and will determine the level of engagement, conversion, and brand health.
For another high-performing UK retailer, sluggish performance was not just a technical disappointment; it was a growth dampener.
Stale bounce rates, diminished conversion, and deteriorating Core Web Vitals metrics were eating into visibility and revenue.
This case study examines how the retailer used Hyvä Commerce to boost their loading speed boost and score on all devices, by turning their Magento store into an optimised digital experience.
Prior to moving to Hyvä Commerce, the retailer was plagued by a series of frontend limitations that most Magento store owners will be familiar with.
Their previous Luma-based frontend was chock-full of duplicate JavaScript, CSS, and heavy dependencies that slowed loads.
As mobile traffic grew, the store loaded in over seven seconds on handheld devices, far beyond Google’s suggested cutoff, and produced subpar mobile conversions and high bounce rates.
Each design modification required expensive frontend revisions, leading to longer development times and increased maintenance expenses.
Slow performance encumbered Core Web Vitals, slowing search rankings and decreasing customer confidence.
Essentially, the outdated frontend stack could no longer keep pace with the retailer’s increasing demand for speed, design flexibility, and scalability.
The tech team at the retailer needed to get rid of these issues, so they replatformed their Magento frontend using Hyvä Commerce, a new-generation platform built for speed, simplicity, and scalability.
As opposed to legacy Magento frontends that depend on RequireJS, KnockoutJS, and LESS, Hyvä use Tailwind CSS and Alpine.js, reducing code bloat dramatically and offering more flexibility.
The transition involved:
In the weeks after launch, the difference was evident.
The Results: 90% Smaller Page Loads and Enhanced Core Web Vitals
After migration, the retailer achieved measurable success through key performance indicators:
Average load time decreased from 6.8 seconds to as low as 0.7 seconds, an industry-leading reduction that dramatically improved user experience.

Due to Hyvä’s lean code architecture, all critical Core Web Vitals measurements, LCP, FID, and CLS, became green, improving search visibility and overall site health.
Accelerated load speeds and better navigation spurred visitors to browse and buy, resulting in an outstanding conversion uplift in the first month.
Mobile visitors saw the most gains, with unprecedented speed uplift, lowering bounce rates for driving better engagement.
Hyvä’s tidy architecture resulted in faster and simpler updates, conserving time and resources on maintenance by almost half.
Hyvä’s secret is lean architecture. It peels off unnecessary layers from Magento’s outdated frontend and substitutes them with optimised, robust technologies.
The changes weren’t technical alone; they transformed business results.
Improved Core Web Vitals resulted in better search positions and visibility, driving greater organic traffic within weeks of launch.
Quick page loads and convenient surfing led to higher on-site stay time, keeping users for repeat buys and more.
From discovery to checkout, all interactions were optimised for speed and seamless experience, diminishing cart abandonment and overall conversions.

The upgrade to Hyvä Commerce positioned the retailer for sustained growth. The store can now handle high-traffic events like seasonal sales comfortably without sacrificing speed or stability.
The design team of the brand has more independence to create good-looking, responsive designs according to the appearance and look and feel of the company, as well as what people like.
Ongoing feedback from the Hyvä community keeps the technology future-proof, up-to-date, and compatible with future Magento releases.
This change, through Silhouette Europe’s success story, illustrates how performance focus can be translated into technical as well as business innovation.
The Hyvä Commerce overhaul was a gold standard of digital transformation for this UK retailer.
By eliminating the inefficiencies present in the legacy frontend and embracing Hyvä’s lean architecture, the store realised a 90% enhancement in faster load times, Core Web Vitals, and conversions by 25%.
The maintenance time dropped by 40%, freeing up resources to be made available for innovation and marketing.
The success story, echoing Silhouette Europe’s victory, demonstrates that performance optimisation is not merely a tech improvement; it’s a business growth tactic.
With Hyvä Commerce, the retailer built a strong foundation for scalability, improved SEO, and higher customer satisfaction, setting a high benchmark for what a Magento store can do. Connect with our Hyvä experts to know more about it’s benefits and implementation process.
By substituting Magento’s heavy frontend with lightweights such as Tailwind CSS and Alpine.js, Hyvä reduces resource loading and accelerates rendering.
Smoother websites provide more user satisfaction, improved search engine rankings, and conversions by enhancing revenue prospects directly.
Yes, Hyvä’s clean code and architecture guarantee best-in-class Core Web Vitals and improved search engine results.
It minimises CSS and JavaScript usage, slashes server requests, and only loads what is needed, making pages load in lightning-fast.
Yes. Hyvä has a mobile-first design, guaranteeing quick, smooth browsing and checkout experiences across all devices.