About Stefan
I fell in love with Frontend development ten years ago, and since the beginning, I learn in public. Sharing my everyday web development discoveries while drinking coffee in bed is my favorite Sunday morning activity.
Whenever I read something and think "Huh! I didn't know that!", I write it down. This approach has led to 672 articles on this blog so far.
- 2 articles written in 2014
- 1 articles written in 2015
- 2 articles written in 2016
- 49 articles written in 2017
- 30 articles written in 2018
- 53 articles written in 2019
- 86 articles written in 2020
- 160 articles written in 2021
- 109 articles written in 2022
- 71 articles written in 2023
- 73 articles written in 2024
- 36 articles written in 2025
If you're curious, check more stats.
My private learning log
And here are some of my recent learnings:
- Forbidden headers can't be set in "fetch" requests Apr 01 2025
- The macOS inline dictionary has a shortcut Mar 14 2025
- parseInt parses anything starting with a number Mar 07 2025
- TypeScript "strictFunctionTypes" is ignored for method syntax Mar 01 2025
- Rerun commands with the built-in "r" command Feb 21 2025
But there's more... 🙈
Web Weekly
A huge thanks goes to Paul Kinlan and Pawel Grzybek for supporting my newsletter on a generous Patreon tier.
Side projects
Occasionally, I build things on GitHub.
If you were ever looking for a particular web development tool you've seen online but can't find it anymore, make sure to check out Tiny Helpers. The resource collection includes over 500 free-to-use online tools for web developers.
Oh, and I'm also a Google Developer Expert, Microsoft MVP and Playwright Ambassador.
Find me online
I hang out online a lot. Make sure to say hi! 👋
Speaking at events
I've spoken at over 50 conferences, including GOTO, JSConf.eu and CodeMotion. If you want to invite me to speak at your event, find all my talks online, and please reach out!
Speaker bio
Stefan works in Checkly's Developer Relations and quickly fell in love with web performance, new technologies, and accessibility. He is also a curator of the online resource Tiny Helpers, Tiny Teachers, contributes to a variety of open source projects, and enjoys sharing nerdy discoveries.