Hey, I'm Stefan. I develop digital services and products.

Stefan Judis

Frontend nerd, organizer of the Web Performance Group Berlin, occasional teacher, curator of Perf Tooling Today, organizer of CSSclasses Berlin and Developer Evangelist at Contentful.

I'm also reading a lot of newsletters and listen to a few podcasts.


  • This month I learned - November 2017

  • This month I learned - October 2017

  • A love letter to a JS component-ready content management system

Discover more at the Blog section


See my past and upcoming talks

Side Projects

  • Performance Tooling Today

    Perf Tooling is a shared resource to keep track of new and existent performance tools.

  • DesignMode Chrome Extension

    A Chrome extension to easily use document.designMode.

  • Forrest

    Forrest is an npm desktop client to deal with daily work flows. It lets you control common npm commands and all custom scripts defined in the package.json.

Check my ongoing side projects