Cardiff has become one of the UK's fastest-growing digital economies, with businesses across retail, healthcare, manufacturing, food and beverage, and professional services embracing eCommerce to reach wider audiences. As brands look for scalable, secure, and high-performing online stores, Shopify and Shopify Plus continue to be among the most trusted eCommerce platforms.

Whether you're launching a new Shopify store, migrating from WooCommerce or Magento, or upgrading to Shopify Plus, partnering with an experienced Shopify agency can help you build an online store that supports sustainable growth and delivers exceptional customer experiences.

Here are the Top 3 Shopify and Shopify Plus agencies in Cardiff for 2026, selected based on their Shopify expertise, technical capabilities, client portfolio, and ability to deliver scalable eCommerce solutions.

1. Weframe Tech

 

Weframe Tech One of the Most Trusted Shopify & Shopify Plus Agencies in Liverpool, Serving Clients Globally.

Whether you're launching, scaling, or migrating we build Shopify and Shopify Plus stores that are fast, conversion optimised, and built to grow with your business. From custom storefronts to full scale enterprise implementations, we've delivered for brands across the USA, UK, Australia, Canada, UAE, Singapore, and beyond.

Why Brands Choose Weframe Tech for Shopify

We don't just set up Shopify stores. We build commerce experiences that perform technically, commercially, and creatively. Every engagement is backed by a team that understands both the platform and the business outcomes that matter.

100% job success score on Upwork

What We Build

• Custom Shopify Storefronts — fully bespoke theme development built around your brand and your customer.

• Shopify Plus Implementation — enterprise-grade builds for high-volume, high-growth brands.

• Headless Shopify — Shopify Plus as the commerce engine, paired with Next.js or Nuxt.js for a fully custom frontend experience.

• Shopify Migration — seamless migrations from WooCommerce, Magento, BigCommerce, Salesforce Commerce Cloud, or any legacy platform.

• Shopify Speed Optimisation — Core Web Vitals, Lighthouse scores, and page performance tuned for conversion.

• Conversion Rate Optimisation (CRO) — data-driven design and development decisions that increase revenue per visitor.

• Shopify App Integration — connecting your store to your full commerce stack seamlessly.

• Shopify Internationalisation — multi-currency, multi-language, and multi-market setups for global brands.

• Shopify B2B & Wholesale — custom B2B portals, pricing rules, and account management built on Shopify Plus.

• Ongoing Retainer & Growth Support — a dedicated team that continues to optimise, test, and grow your store post-launch.

Our Shopify Tech Stack

Storefront & Themes
Shopify Liquid, Shopify Hydrogen, Dawn, Custom Theme Development

Headless Frontend
Next.js, Nuxt.js, Astro.js, Remix

CMS & Content
Sanity CMS, Contentful, Storyblok, DatoCMS, payload cms ,strapi cms, directus cms 

Search & Discovery
Algolia, Searchie, Boost Commerce, Constructor.io

Reviews & Social Proof
Okendo, Yotpo, Stamped, Judge.me

Subscriptions & Loyalty
Recharge, Skio, Loyalty Lion, Smile.io, Yotpo Loyalty

Email & Retention
Klaviyo, Omnisend, ActiveCampaign, Drip

Analytics & CRO
Google Analytics 4, Hotjar, FullStory, Triple Whale, Northbeam, Heap

Personalisation & A/B Testing
Optimizely, VWO, Dynamic Yield, Ninetailed

ERP & Backend
SAP, NetSuite, Microsoft Dynamics 365, Brightpearl

Payments & Checkout
Shopify Payments, Stripe, Klarna, Afterpay, PayPal, Braintree

OMS & Fulfilment
ShipBob, ShipStation, Brightpearl, Fluent Commerce

Infrastructure
Vercel, Netlify, Cloudflare, AWS

Who We Work With

We work with DTC brands, luxury retailers, enterprise ecommerce businesses, and high-growth startups that take their Shopify store seriously. Our clients include:

• Certify — $50M funded healthcare company

• Slingshotbio.com — $49M funded biotech company

• Unimig — Australia's largest welding manufacturer

• Skin Laundry — One of the largest skin treatment brands in the USA, $3M+ venture funded

• Abaxx Exchange — Publicly listed fintech company

• Catalyser

We've also had the privilege of working with globally recognised brands including Ferrari, Bentley, Keepway, Lulu Mall, and Bellini.

Where We Work

We are a globally distributed agency serving clients across:

• 🇺🇸 United States

• 🇬🇧 United Kingdom

• 🇦🇺 Australia

• 🇨🇦 Canada

• 🇦🇪 United Arab Emirates

• 🇸🇬 Singapore

• 🇪🇺 Europe

• 🇮🇳 India

No matter where you are, our team operates across time zones to deliver without delay.

If Any of These Sound Familiar We Should Talk

• Your Shopify store is slow and losing conversions.

• You've outgrown your current theme and need a fully custom build.

• You're migrating from another platform and need it done without disruption.

• You need Shopify Plus capabilities — B2B, multi-market, advanced checkout.

• You want a headless storefront that gives you full design and performance freedom.

• You need a long-term partner, not just a one time developer.

Every project we take on is treated as a commercial problem first and a technical one second. We don't just build stores we build revenue generating commerce infrastructure.

Let's build your best performing store yet.

2. Glue Digital Studio LTD

Glue Digital Studio LTD is a Cardiff-based digital agency that helps businesses design, develop, and optimize Shopify and Shopify Plus stores for sustainable online growth. The agency combines creative UX/UI design, bespoke Shopify development, and strategic eCommerce consulting to build responsive, high-performing online stores that enhance customer engagement and increase conversions. From Shopify migrations and custom theme development to third-party integrations and ongoing optimization, Glue Digital Studio LTD delivers scalable eCommerce solutions tailored to each brand's unique goals.

Key Services

• Shopify Store Development

• Shopify Plus Development

• Shopify Migration Services

• Custom Shopify Theme Development

• Shopify App & API Integrations

• UX/UI Design

• Performance & Conversion Rate Optimization

• Ongoing Shopify Maintenance & Technical Support

3. DigiMantra

DigiMantra is a digital commerce and software development agency that helps businesses build, migrate, and optimize Shopify and Shopify Plus stores for long-term growth. The agency combines custom Shopify development, UX/UI design, and modern eCommerce strategies to create fast, secure, and conversion-focused online stores. From bespoke Shopify theme development and third-party integrations to platform migrations and ongoing performance optimization, DigiMantra delivers scalable Shopify solutions tailored to the needs of startups, SMEs, and enterprise retailers.

Key Services

• Shopify Store Development

• Shopify Plus Development

• Shopify Migration Services

• Custom Shopify Theme Development

• Shopify App & API Integrations

• UX/UI Design

• Performance & Technical SEO Optimization

• Ongoing Shopify Maintenance & Technical Support

Final Thoughts

Choosing the right Shopify agency is an important step toward building a successful online business. Whether you're launching your first Shopify store, migrating from another platform, or expanding with Shopify Plus, partnering with an experienced development team ensures your eCommerce website is built for performance, scalability, and future growth.