As a Shopify agency based in Cologne, we build custom online stores
We bring high-end design and digital agility to e-commerce. As a specialized Shopify agency, we create customized experiences that help brands like Katjes and bilou scale globally. We are deeply embedded in Cologne’s digital ecosystem and combine technical precision with sales-driven aesthetics—for stores that set new standards in a dynamic market environment.
Brand commerce with Shopify:
Custom theme design & development for Heimplanet
Custom theme design & development for Heimplanet
Custom Shopify Theme
+22% conversion rate after 6 months
through improved UX/UI
+13% increase in shopping basket value
through optimized user flow and upsells
Over 3 years of collaboration
with continuous store development
From sweet dreams to sweet successes: Shopify relaunch for Katjes
Custom Shopify Theme
The online brand experience should be improved
The aim was to present the Katjes brand in an authentic way
Additional added value compared to brick-and-mortar retail
Bundles, Updsells, Free-Shipping
Successful brand bilou: New Shopify store for the social media star
Custom Shopify Theme
For bilou, we were able to implement the complete relaunch of the online store on a Shopify 2.0 theme developed in-house and perfectly tailored to the brand.
Reduction of app costs
We were able to significantly reduce the app costs through native developments
How Fortis Watches brings the art of Swiss watchmaking to the digital space
Custom Shopify Theme
Move from WooCommerce to Shopify
From an unreliable system to the market leader
Innovative features
An interactive 3D watch model allows customers to explore every detail
Storytelling product pages
History and craftsmanship should come alive behind every timepiece
Our services
Everything you need for your Future-Proof Shopify Store.
Long-term &
sustainable development
sustainable development
Individual store design (custom themes)
We create Shopify stores tailored precisely to the target group & requirements of the brand.
Complete migration to Shopify
Whether WooCommerce, Magento or Shopware. We migrate your store, customer data & products to Shopify
Long-term consulting, analysis and optimization
Continuous store development, proactive consulting & optimization for long-term results
Digital custom solutions for visionary brands.
We know how e-commerce works at the highest level: With expertise gained from over 35 Shopify relaunches and optimization for 10 million visitors per year, we develop stores that not only attract traffic but also drive measurable conversions. Experience that pays off for your brand.
Arrange a consultation
Lightning Fast Delivery
Due to our modern tools and a lot of experience, we work extremely fast and efficiently, delivere therefore very quickly (4-8 weeks) with better results than the competition.
Brand conformity & visual precision:
Our design impresses at first glance with its perfect coordination with the brand identity - without compromising on functionality and aesthetics.
Above average conversion rate
What use is a pretty web store if nobody visits it or if nothing is bought through it? Exactly, very little. We optimize every little detail for maximum customer satisfaction & shopping cart size.
Future-proof SEO strategy
We take a holistic view of search engine optimisation and ensure long-term, organic success - whether with long-tail keywords or individual landing pages.
Fast performance
We design user interfaces that are not only visually appealing, but also technically optimized to offer fast loading times and a seamless, responsive user experience.
Made to scale
Our websites are a marketing tool, not an engineering nightmare. We set up the CMS with the help of components so that it can be managed and scaled by marketing teams in the long term.
Fixed price that lasts.
We stick to the agreed budget. This means there are no nasty surprises at the end of the project.
⌀23%
higher order values
⌀13%
Uplift in conversion
99%
Customer satisfaction
Expertise since 2017
Your Shopify agency in Cologne.
Focus since 2017
Shopify specialists from day one. No half-measures, no cutting corners—we know the system inside and out.
100% In-House
Design, development, and strategy all under one roof. We guarantee streamlined processes and results that don’t require external coordination.
On the pulse of time
We drive forward visionary ideas and take our customers to where they want to be in the future.
Marvin Blach
Managing Director Technology
Viktoriia Mylymuk
Junior Art Director
Jonas Schäuffelen
Managing Director Operations
Amanda Höglinger
Web Developer
Selina Knierling
Junior Art Director
Anika Jengo
Project Management
Florian Blach
Managing Director Creation
Process
A structured process for the perfect store
Tested with more
than 200 customers
than 200 customers
We promise transparent communication. This also applies to our way of working. We take our clients with us throughout the entire process.
Obtain a free project analysis.
Actual/target analysis of the existing website
Detailed project plan
Non-binding offer with fixed price
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FAQ
Frequently asked questions and answers
Any more questions?
We will be happy to advise you
We will be happy to advise you
Why should I choose a specialized Shopify agency in the Cologne area?
Cologne is one of the most important hubs for e-commerce and consumer brands in Germany. We combine this deep understanding of the local market with high-end design. While other agencies offer standard solutions, we develop systems that remain stable and perform well even under extreme traffic—as we do for brands like Katjes.
How much does it cost to have a custom theme developed by you?
Custom theme development typically starts at between €10,000 and €20,000. We rely on pure Liquid programming rather than rigid templates. The result is a store that is as unique as your brand itself and technically on par with the top players in Cologne’s digital scene.
Shopify Plus for Cologne-based Brands: When Is the Right Time?
When your business outgrows the standard setup, Shopify Plus is the key to international scaling and checkout customization. We provide objective, data-driven advice on when the switch will truly pay off financially for your business.
Can you migrate my existing store to Shopify without losing any data?
Absolutely. With experience from over 35 successful relaunches, we’ll migrate your product data and customer databases securely. We’ll use the move to Shopify as an opportunity for in-depth SEO optimization and an improved user experience, ensuring your new store outperforms the old system from day one.
How quickly can a project be implemented at Halbstark?
Typically, a project takes 8 to 12 weeks from the initial strategy workshop to go-live. Since we handle all aspects of the project—strategy, design, and development— in-house, we guarantee short communication channels and the speed of implementation that gives you a decisive edge in modern e-commerce.
Will you offer long-term support after the launch in Cologne?
A successful online store is never “finished.” We see ourselves as your long-term e-commerce partner. We support you with ongoing conversion optimization and integrate new interfaces. Drawing on our expertise gained from over 5 million annual visitors, we continuously identify new growth opportunities for your store.