Ein UI Documentation
Ein UI is an open-source liquid glass component library for React & Next.js. Use these docs to install the registry, customize themes, and ship beautiful glass UI components.
Popular Components
Quick Start
Get up and running in seconds with a single command
npx shadcn@latest add @einui/glass-card
Or add all components at once:
npx shadcn@latest add @einui/glass-button @einui/glass-input
Liquid Glass Design
Beautiful transparency effects, smooth gradients, and sleek glow animations that bring your UI to life.
Open Code
Full access to component source code. Copy, paste, and customize to fit your exact needs.
Tailwind CSS v4
Built with the latest Tailwind CSS v4 features including CSS variables and the new theming system.
Shadcn Compatible
Works seamlessly with the Shadcn CLI. Install components directly into your project structure.
Philosophy
"This is not a component library. It is how you build your component library."
Ein UI follows the same principles as Shadcn UI - components are not installed as a package dependency. Instead, you get the actual source code copied into your project.
This approach gives you:
- Full control over every line of code
- Easy customization without fighting overrides
- No dependency bloat or version conflicts
- AI-friendly code that LLMs can understand and modify