About Us

We are a strategic digital agency with a focus on the web. We specialise in crafting accessible low-carbon, top-performance websites, shooting for the very best in WordPress and web standards.

Mission and Values

We help businesses reduce their online carbon footprint by up to 75%, promoting a sustainable digital future.


We champion a user-centric web, ensuring accessibility, privacy, and ethical digital marketing practices.


We engineer websites to exacting standards for speed, accessibility and SEO, backed by a top performance guarantee.

Sustainable WordPress Agency

Conlumina is a full-service WordPress agency with a focus on crafting low-carbon, top-performance websites.

Its founder and principal developer, Fabian Kastner, works directly with all clients and is responsible for the overall quality of each project. A web and software developer with over 20 years of experience, a contributor to the WordPress core, and a well-rounded expert in all of the services that Conlumina offers, he is committed to ensure the highest level of service is delivered.

Fabian works with a team of developers, UX/UI designers, SEO specialists, copywriters, and creatives based on the specific needs of the project. The result is an agile team that works efficiently, collaborate effectively, and has the necessary expertise to provide confident guidance throughout the project.

Our Promise
100% Quality

Our websites are handcoded from scratch, and come with a top performance guarantee.

100% Flexibility

Clients can easily build out their websites themselves, without breaking the design.

100% Accessibility

Our web components follow the WAI-ARIA guidelines, and provide full keyboard control.

What Clients Say
Not only did we get a great user experience for our customers. Thanks to the methodical approach of research, validation, planning, and design, we also reached our business goals.
Smooth cooperation on design and development of our new website. Nice to work with a developer that easily understood our needs and requests, and efficiently turned them into solutions. A small agency that you can rely on.
I highly recommend Conlumina for their WooCommerce expertise to anyone facing the common challenges of establishing an e-commerce business.
Fabian is a pleasure to work with, filled with good will and a positive vibe, always giving us a safe feeling that he knows what he's doing. We are thankful from the bottom of our hearts to have met him and for having him with us on board.
Finally, we have a website we no longer have to feel ashamed about. The site looks great and works even better than we had hoped for – we're so proud of the end result.
We had a very specific vision of what our website should look and feel like. Conlumina really went out of their way to realise it in every little detail, and then some. The design is simply perfect. We couldn’t be happier with the result!