JLDSOwn your components.

A light-first, deep-emerald design system for rapid prototyping (dark theme opt-in). It exists to let a designer or agent stand up a polished, production-credible interface in minutes

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Own your code

Components are copied into your project as plain source files — no npm package, no version lock-in. Read it, edit it, ship it.

React & Vue

jlds init auto-detects your framework (including Next.js and Nuxt) and scaffolds jlds.json accordingly.

No Tailwind required

Every component ships self-contained .jl-* CSS classes built on CSS variable design tokens — Tailwind is optional.

HTML too

Skip the CLI entirely — link css/index.css and css/.css from jsDelivr and use the same classes directly.

Responsive by default

Resize the window and watch it adapt — columns collapse, buttons stretch full-width, and dialogs rise from the bottom as sheets on small screens. Same components, nothing extra to wire up.

See how it adapts

Dark theme built in

A calm, off-white canvas to start, with a full dark theme one attribute away. Flip data-theme="dark" and every component follows along — no extra setup, no flash of the wrong colors.

Theming guide