HJX – An AI-Native Web Language Unifying HTML, CSS and JavaScript
Single-file UI language for AI generation, but no evidence it reduces tokens vs normal dev flow.

Side-by-side snippets (old hack → modern CSS) with difficulty, browser-compat scores and a playground make this an instant lookup for refactors. The curation is pragmatic — examples like translate-centering → place-items, scrollbar-gutter, and OKLCH color swaps show you exactly what to replace and why. I’d love inline live sandboxes and per-browser caveats for tricky edge cases, but the site already shaves hours off common CSS archaeology.
Front-end developers and web designers looking to modernize CSS patterns
Single-file UI language for AI generation, but no evidence it reduces tokens vs normal dev flow.
Four-year-old paper implementation when the federated learning landscape has moved on.
LSP for CSS variables with cascade awareness, but Stylelint, PostCSS, and editor extensions already cover this.
Finally escapes Webflow's paid export gate with full CMS-to-Markdown conversion.
Yet another screenshot-to-code tool competing with v0.dev and Builder.io.
The input shows the actual characters behind a CSS blur and exposes them via a hover or touch-and-drag reveal window with a smooth fade-out. It's zero-dependency and tiny (~7KB minzip), plugs into any framework or via CDN, and even honors prefers-reduced-motion and screen readers. Clever UI craft for polish-hungry teams, but it's primarily a cosmetic enhancement that doesn't alter underlying security concerns.