# Checkbox

> A checkbox input with an optional label and hint text for capturing a single on/off or tri-state choice in a form.

- Author: [properui](https://21st.dev/@properui)
- Library: Proper UI
- License: MIT
- Tags: Input, Form, Checkbox, React Aria, Accessibility
- npm dependencies: react-aria-components
- Live preview: https://21st.dev/@properui/components/checkbox

## Install

```bash
npx shadcn@latest add "https://21st.dev/r/properui/checkbox?api_key=$API_KEY_21ST"
```

Requires a 21st API key (generate one at https://21st.dev/mcp) passed as `API_KEY_21ST`. Free accounts get a limited number of installs per day; unlimited on a paid plan — see https://21st.dev/pricing.

Full component directory: https://21st.dev/llms.txt · More like this: https://21st.dev/community/components/s/input.md