Christian Heilmann

Here is where developers perish…

May 5th, 2023

And that’s a wrap. I recorded my last video in the German LinkedIn Learning video course on “Browser developer tools for non-developers”. My favourite stumbling block over the course of the last few days was me starting a sentence with “Und hier verwenden Entwickler:innen…” (“…and here is where developers use…”) and making a pig’s ear […]

Crown dwarf witness – Recording a new course for LinkedIn Learning in Graz

May 2nd, 2023

I am currently in Graz, Austria to record a video series of “Developer tools for non-developers” for LinkedIn Learning. We had a massive ride by car down here from Berlin as my partner isn’t too hot on flying. The city is ridiculously pretty and we arrived on first of May which is the day of […]

Microsoft Edge now allows you to simulate dark, light, high contrast mode, blurred vision and colour deficiencies right from the Device Emulation toolbar

April 28th, 2023

I was incredibly excited to see that from Microsoft Edge 111 onwards you can now emulate different viewing modes and vision deficiencies right from the device emulation toolbar. This has been one of my pet projects that I really wanted to see come to live ever since I created the Skillshare Course on Accessibility testing […]

Upgrading our CSS habits: aspect-ratio

April 20th, 2023

The CSS aspect-ratio property is pretty amazing. You can define a ratio of width to height and it will resize the element accordingly. You can try it out in this pen : See the Pen CSS aspect ratio is awesome! by Christian Heilmann (@codepo8) on CodePen. Where this shines is videos, image content and embeds. […]

Newsletter

Check out the Dev Digest Newsletter I write every week for WeAreDevelopers.

160: Graphs and RAGs explained and VS Code extension hacks Graphs and RAG explained, how AI is reshaping UI and work, how to efficiently use Cursor, VS Code extensions security issues.
159: AI pipelines, 10x faster TypeScript, How to interview How to use LLMs to help you write code and how much electricity does that use? Is your API secure? 10x faster TypeScript thanks to Go!
158: 🕹️ Super Mario AI 🔑 API keys in LLMs 🤙🏾 Vibe Coding Why is AI playing Super Mario? How is hallucinating the least of our worries and what are rules for developing Safety Critical Code?
157: CUDA in Python, Gemini Code Assist and back-dooring LLMs We met with a CUDA expert from NVIDIA about the future of hardware, we look at how AI fails and how to play pong on 140 browser tabs.
156: Enterprise dead, all about Bluesky and React moves on! Learn about Bluesky as a platform, how to build a React App and how to speed up SQL. And play an impossible game in the browser.

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