Lab
Small tools I built to solve a real problem, running right here in your browser. No API keys, no accounts, nothing sent anywhere.
JSON → TypeScriptPaste an API response, get interfaces you can actually keep.TypeScript · Vue 3Contrast checkerCheck any two colours against WCAG AA and AAA, with this site's own tokens preloaded.SCSS · Vue 3Expected-value modelTurn probabilities and payoffs into one comparable number, then watch what one wrong guess does to it.TypeScript · AI: decision models (JEV)Regex labWrite a pattern, watch every match and capture group light up as you type.JavaScript · TypeScriptWhat your browser saysThe user agent, the screen and a dozen media queries describe your device before you touch anything. Here is what this page can read — and where the official classification stops being true.JavaScript · Vue 3