5/5 rating

We are frontend developers

We are frontend developers with a decade of experience. We change the graphic design into a fast, responsive and flawlessly working user interface.

The result of our work is a tested set of HTML files, ready for implementation in the next stage of the project.

We analyze, reflect and advise. During our work we share our suggestions and ideas.

What we do


Audit, analysis and consultation.


Coding into HTML, CSS, JavaScript templates.


Testing using physical devices and simulators.

Performance test

We test performance, WCAG compliance and SEO optimization using tools such as Google PageSpeed Insights.


Our work is covered by a 12-month warranty.

Have an idea? Contact us!

We are happy to talk about your project.

    We care about your personal data. Privacy Policy.

    How we work

    We can do the whole project for you starting from the audit, creating UX design (prototype) and then UI design (design).

    If you already have a graphic design prepared by another person or agency, we can join the work at this stage and work on delivered graphic files changing them into a clickable interface.

    We have written an article for designers about how to prepare graphic design to make the work of frontend developers easier in the next stage.

    Comprehensive website design
    Inknart and Yggdrasil websites on mobile devices. HTML, CSS and JavaScript logos

    Frontend development technologies

    We work with HTML, CSS and JavaScript. We use Vue.js or Angular frameworks.

    We test the frontend manually, using automated tests and tools such as Google PageSpeed Insights or Browserstack.

    We use a mobile-first approach. We make sure that the UI is displayed and works properly on mobile devices.


    The UI prepared by us will display correctly in browsers on all devices. Size and layout of elements on the screen will dynamically adjust to the size of the device so that the use of the interface is easy and intuitive.

    Our work is verified for compliance with current WCAG guidelines (take a look – we wrote two articles about them: WCAG compliance: introduction and WCAG guidelines – levels and criteria).

    Contrast version of the website on three devices: laptop, tablet and iPhone
    Website performance testing


    We study rendering time, manipulating HTML, CSS and JavaScript. We have the tools and knowledge to make sure your site runs fast.

    We provide a 12-month warranty on our work.

    Contact Us

    Jakub Kozak

    Jakub Kozak

    Co-founder, Head of technology

    Are you looking for an experienced programming team?
    Let’s talk.

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      Smultron Software Lab

      12 Slawkowska Street
      31-014 Krakow, Poland

      +48 533 097 111

      TAX ID: PL6762482785