UnoCSS Has a Free API — The Instant CSS Engine Replacing Tailwind

UnoCSS is the instant, on-demand atomic CSS engine that's replacing Tailwind CSS for thousands of developers — and its entire API is free and open source. Why UnoCSS Over Tailwind? UnoCSS is not a framework — it's an engine . You define the rules, it generates the CSS. And it's absurdly fast: 1000x faster than Tailwind in benchmarks (200x faster HMR) Zero parsing — regex-based extraction Fully customizable — bring your own conventions Tailwind-compatible — use the same class names if you want Pure CSS Icons — any icon from Iconify (200K+ icons) as CSS Quick Start # Install npm install -D unocss # vite.config.ts import UnoCSS from "unocss/vite" ; export default { plugins: [ UnoCSS ()] } ; /* uno.css — import in your main file */ @import "uno.css" ; That's it. Start writing utility classes. Presets (The Killer Feature) // uno.config.ts import { defineConfig , presetUno , // Tailwind/Windi compatible presetIcons , // 200K+ pure CSS icons presetTypography , // Prose styles like @tailwindcs