Design slop is the feeling that tells you a website is purely AI-generated. This is an attempt to classify the design patterns behind it.Applying this scoring to recent ShowHN submissions shows that about a third of the submissions show medium to heavy design slop: https://slopcop.adriankrebs.ch/showHow the scoring works:- A headless browser loads each site (Playwright)- A small in-page script analyzes the DOM and reads computed styles- Every pattern is a deterministic CSS or DOM check.There are false positives, but my manual QA run verified it’s maybe 5-10%.