I was wrong about Claude’s UI skills

I thought I was better than Claude at UI design. All my attempts so far looked like AI slop.

Up until I tried this approach: build the initial wireframe, work on the UI kit with Claude and define some guidelines (no borders, soft shadows, more whitespace, use Bézier curves in animations) in an MD file. Just like a proper UI designer would do it.

Then iterate, but always ask to follow the initial UI kit, ideally referencing the MD file in the repo. This approach gave me impressive results, and that’s because of the formality due to the UI kit (MD) which is the language Claude speaks.

I implemented 80% of the new UI features with Claude in a few hours, and I didn’t have to tweak a single thing.

It’s a free and open-source PDF editor in 2D, like Figma:
 - **repo:**  https://github.com/AlexandrosGounis/pdfx
 - **web demo:**  https://pdfx.zip