Hyvä Theme Development & Migration for Magento 2

Build lightning-fast Magento stores with the modern Hyvä framework. Alpine.js and Tailwind CSS replace the legacy Luma frontend, delivering dramatically faster page loads, better Core Web Vitals, and a superior developer experience.

Discuss Hyvä
  • 90+ Lighthouse Score
  • 50% Less JS
  • Faster Load Times
  • Modern Stack
  • £100/hr Billed to the minute

Real Hyvä Performance Results

  • Lighthouse Score: 35 → 95+

    Luma themes typically score 25-40 on Google Lighthouse. Our Hyvä migrations consistently achieve 90+ scores, dramatically improving Core Web Vitals and search rankings.

  • 50% Less JavaScript

    Hyvä replaces Magento's RequireJS and KnockoutJS frontend with lightweight Alpine.js. The result: pages that load in under 2 seconds instead of 5-8 seconds on legacy Luma themes.

Performance Benchmarks: Hyvä vs Luma

Real-world performance differences between Hyvä and Luma on equivalent Magento 2 stores.

Typical Luma Store

  • Lighthouse Score: 20–35
  • LCP: 4–8 seconds
  • JavaScript: 300–500 KB
  • Time to Interactive: 6–12 seconds
  • Total page weight: 2–4 MB

Hyvä Store

  • Lighthouse Score: 90+
  • LCP: under 2.5 seconds
  • JavaScript: 30–50 KB
  • Time to Interactive: under 3 seconds
  • Total page weight: under 500 KB

These figures are based on typical Magento 2 stores we've audited. Your results will depend on your specific setup, hosting, and customisations, but the direction of improvement is consistent across every Hyvä migration.

What is Hyvä?

Hyvä is a modern replacement for Magento's default Luma and Blank themes. It strips out the heavy RequireJS and KnockoutJS frontend stack and replaces it with lightweight Alpine.js for reactivity and Tailwind CSS for styling.

For merchants, this means faster stores, better SEO rankings, higher conversion rates, and lower development costs. For developers, it means working with a modern, enjoyable tech stack instead of wrestling with Magento's legacy frontend architecture. With over 15 years of deep Magento frontend and backend expertise, our team is ideally positioned to deliver Hyvä builds that take full advantage of the framework's capabilities.

Key Benefits

  • 90% less JavaScript than Luma
  • Alpine.js reactivity for dynamic interactions
  • Tailwind CSS utility classes for rapid styling
  • Faster development cycles and lower costs
  • Better SEO performance through Core Web Vitals

Hyvä vs Luma vs PWA

  • Luma (Default)

    Familiar but heavy. Built on RequireJS and KnockoutJS, Luma delivers poor Core Web Vitals scores, ships large JavaScript bundles, and slows down development with its complex, outdated frontend architecture.

  • Hyvä

    Modern and lightweight. Built on Alpine.js and Tailwind CSS, Hyvä delivers excellent Core Web Vitals, ships 90% less JavaScript, enables rapid development, and benefits from a growing ecosystem of compatible modules.

  • PWA Studio

    Headless and decoupled. React-based with complex infrastructure requirements, PWA Studio comes with higher development and hosting costs, limited extension compatibility, and an uncertain future as Adobe has shifted focus away from the project.

Hyva vs Luma, which is right for your store?

Luma is the default Magento 2 theme and has been shipping since 2015. Hyva is a modern replacement launched in 2020 and made fully open source in November 2025. Both are actively supported but they target different priorities.

Hyva is built on Alpine.js and Tailwind CSS with server side rendering for most of the frontend. A Hyva store typically scores 90+ on Lighthouse with 50% less JavaScript than a Luma store. The trade-off is extension compatibility: Hyva has its own extension ecosystem and not every Luma extension has a Hyva equivalent.

Choose Hyva if performance and Core Web Vitals are your top priority, if you are starting a new build, or if you have a small number of extensions. Stay on Luma if your store is heavily customised with many third party extensions that would need rebuilding. If you are already planning a Magento version upgrade, that is usually the right moment to switch.

Core Web Vitals Impact

  • < 2.5s LCP - Largest Contentful Paint
  • Near Zero FID / INP - Input Delay
  • Minimal CLS - Layout Shift

Real-World Conversion Impact

Every 100ms improvement in load time increases conversions by up to 1%. Our performance optimisation work delivered 65% faster load times for Joanie Clothing and a 45% conversion increase for Tieroom.

Our Hyvä Development Services

  • New Hyvä Builds

    Ground-up Hyvä theme development from design conversion through to checkout optimisation, built for performance from day one.

  • Luma to Hyvä Migration

    We audit your customisations and extensions, rebuild what's needed for Hyvä compatibility, and migrate your design to the new stack. Most migrations take 4–8 weeks.

  • Module Compatibility

    We audit your extensions, implement compatibility modules where they exist, and build custom solutions where they don't.

  • Hyvä Checkout

    Optimised checkout experiences that load instantly and guide customers through payment with minimal friction.

  • Performance Tuning

    Advanced image optimisation, critical CSS extraction, cache strategies, and asset delivery tuning to squeeze every millisecond out of your store.

  • Ongoing Support

    We keep your Hyvä theme current, handle compatibility updates for new Magento versions, and continue optimising as your store grows.

Extension Compatibility

One of the biggest concerns when moving to Hyvä is extension compatibility. We ensure all your critical extensions work flawlessly with the new frontend, so nothing breaks during the transition.

  • Hyvä compatibility modules for popular extensions
  • Growing ecosystem of Hyvä-native modules
  • Full extension audit before migration begins
  • Fallback strategies for unsupported modules
  • Custom compatibility development where needed

What Our Clients Say

  • "After going through a couple of agencies that did not meet our expectations, we were recommended Interjar and have now been with them for three years. Interjar are proper Magento experts and efficiently handle any issue or development requirements. I can highly recommend them."

    Christian Andersson
    Director, Tieroom

Hyvä Development FAQs

  • What is Hyvä and why should I switch from Luma?

    Hyvä is a modern replacement for Magento's default Luma theme. It replaces the heavy RequireJS and KnockoutJS frontend with lightweight Alpine.js and Tailwind CSS, delivering 90+ Lighthouse scores compared to Luma's typical 20-35. Faster stores mean better SEO, higher conversions, and lower development costs.

  • Will my existing Magento extensions work with Hyvä?

    Not all extensions work out of the box with Hyvä, as it uses a completely different frontend stack. We audit your extensions before migration, implement compatibility modules where they exist, and build custom solutions where they don't. The Hyvä ecosystem is growing rapidly, with compatibility modules available for most popular extensions.

  • How long does a Luma to Hyvä migration take?

    Most Luma to Hyvä migrations take 4-8 weeks depending on the complexity of your theme customisations, number of extensions, and checkout modifications. We migrate your existing design to the new stack, so you get modern performance without a complete redesign.

  • Does Hyvä work with Adobe Commerce?

    Yes. Hyvä is fully compatible with both Magento Open Source and Adobe Commerce, including Adobe Commerce's B2B features, Page Builder, and Live Search. We have experience building Hyvä themes on both platforms.

  • What kind of performance improvement can I expect?

    Typical improvements include Lighthouse scores jumping from 20-35 to 90+, page load times dropping from 5-8 seconds to under 2 seconds, and JavaScript payload reducing by up to 90%. The exact improvement depends on your current setup, but the direction is consistent across every migration we've done.

  • Is Hyva free now?

    Yes. Hyva became fully free and open source in November 2025. There is no longer a licence fee.

  • How long does a Luma to Hyva migration take in 2026?

    A straightforward migration runs 6 to 10 weeks. Stores with heavy customisation or many extensions run 12 to 20 weeks. We quote after a free assessment of your current extensions and theme customisations.

  • Will my existing Magento extensions work with Hyva out of the box?

    Some will, most will not work out of the box. Hyva has a compatibility module that handles simple extensions automatically. Complex extensions need either a Hyva specific version from the vendor or a custom rebuild.

Get a Free Lighthouse Score Review

Let's discuss how Hyvä can transform your Magento store's performance, improve your Core Web Vitals, and deliver a better experience for your customers.

Get a Free Lighthouse Score Review

"The communication is great and the team are flexible and knowledgeable, using their Magento experience to recommend the best solutions for the site."

Sarah Gallagher, Head of E-commerce, Joanie Clothing
Get Your Free Consultation
Tell us about your project or challenge. We'll review your enquiry and respond within 4 business hours with an initial assessment - no obligation, no hard sell.
  • We respond within 4 business hours
  • No obligation - just a straightforward conversation
  • You'll speak directly with a senior developer
Contact Us