Front-end education for the real world. Since 2018.





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Kilian Valkhof

Kilian is the founder and solo developer of Polypane, the web browser for developers that helps with responsive design, accessibility and general website quality.

He’s also built other tools like Superposition to extract design tokens from live websites and Fixa11y to fix accessibility issues on sites automatically.

He frequently writes about CSS, HTML and JS on the Polypane Blog and his own website, and speaks at conferences worldwide on the same topics.

Latest articles by Kilian Valkhof

  1. Programming principles for self taught front-end developers

    The majority of us are a bunch of self taught people with rather spotty knowledge and that's fine! Kilian (also self taught) is here to share some of the computer science fundamentals you probably are missing with the aim to improve your code in the long term.

    Advice