#What is UI JLN Dev?

UI JLN Dev is a free, open-source theme generator designed to create 10,000+ custom themes for shadcn/ui projects. Created by Julien Lemoine, its primary goal is to help developers quickly generate harmonious color palettes for feedback states (success, warning, error, info), enabling fast customization of shadcn/ui themes. Built with React, TypeScript, and Tailwind CSS (v3/v4), the tool allows users to input a primary color and instantly preview and export themes with optimized feedback colors. It supports shadcn/ui CLI integration for one-click theme addition (npx shadcn@latest add) and shareable URLs for collaboration. For shadcn/ui users, UI JLN Dev is a perfect fit, streamlining theme creation for dashboards, landing pages, or apps with a simple, intuitive interface at ui.jln.dev.

#Features ⚡️

• 10,000+ Themes: Generate thousands of unique themes based on primary color input.

• ShadCN UI Integration: Direct CLI support for adding themes to shadcn/ui projects.

• Accessibility: Optimized feedback colors for WAI-ARIA compliance.

• CLI Support: Export with npx shadcn@latest add for seamless setup.

• Responsive Design: Tailwind CSS ensures themes adapt to all screen sizes.

• Type Safety: TypeScript ensures robust, error-free development.

#Pros and Cons

#Pros ✅

• Rapid Theme Creation: Instant generation of 10,000+ palettes saves design time.

• Free and Open-Source: No cost, with contributions encouraged on GitHub.

• ShadCN UI Fit: Tailored for shadcn/ui, enhancing its ecosystem.

• Community Support: Active engagement with 100+ GitHub stars.

• Easy Integration: Shareable URLs and CLI exports simplify collaboration.

#Cons ⚠️

• React Dependency: Limited to React projects, though fitting for shadcn/ui.

• Setup Complexity: Requires shadcn/ui and Tailwind CSS pre-installed.

• Performance Overhead: Real-time previews may lag on low-end devices.

• Learning Curve: Familiarity with shadcn/ui and Tailwind needed for effective use.

#Included Components - Templates

UI JLN Dev provides a variety of shadcn/ui-powered themes:

• Color Palette Generator: Harmonious color schemes with live previews.

• Typography Editor: Custom font families and sizes for shadcn/ui.

• Dark/Light Mode Toggle: Instant switching between theme modes.

• Responsive Previews: Screen-size variants for mobile/desktop.

#Pricing 💸

UI JLN Dev operates on a Free model:

• Free Access: All features available under open-source license.

• No Pro Version: No premium tiers or paid features.

#Integrations 🧰

UI JLN Dev integrates with:

• React: Core framework for theme previews.

• ShadCN UI: Theme application via CLI and globals.css.

• Tailwind CSS: v3/v4 support for color and typography.

• TypeScript: Ensures type-safe theme exports.