mintlify__docs/customize/react-components.mdx

---
title: "React components"
description: "Build interactive and reusable elements with custom React components in your Mintlify documentation using JSX, state, and client-side logic."
keywords: ["React components", "interactive components", "JSX", "custom components"]
boost: 3
---

import { ColorGenerator } from "/snippets/color-generator.jsx";

Build interactive elements in your docs using [React components](https://react.dev) and [hooks](https://react.dev/reference/react/hooks) directly in MDX files.

## Inline components

Declare components directly in your MDX file:

export const Counter = () => {
  const [count, setCount] = useState(0)

  const increment = () => setCount(count + 1)
  const decrement = () => setCount(count - 1)

  return (
  <div className="flex items-center justify-center">
      <div className="flex items-center rounded-xl overflow-hidden border border-zinc-950/20 dark:border-white/20">
        <button
          onClick={decrement}
          className="flex items-center justify-center h-8 w-8 text-zinc-950/80 dark:text-white/80 border-r border-zinc-950/20 dark:border-white/20"
          aria-label="Decrease"
        >
          -
        </button>

        <div className="flex text-sm items-center justify-center h-8 px-6 text-zinc-950/80 dark:text-white/80 font-medium min-w-[4rem] text-center">
          {count}
        </div>

        <button
          onClick={increment}
          className="flex items-center justify-center h-8 w-8 text-zinc-950/80 dark:text-white/80 border-l border-zinc-950/20 dark:border-white/20"
          aria-label="Increase"
        >
          +
        </button>
      </div>
    </div>
  )
}

<Counter />

```mdx
export const Counter = () => {
  const [count, setCount] = useState(0)
  const increment = () => setCount(count + 1)
  const decrement = () => setCount(count - 1)

  return (
    <div>
      <button onClick={decrement}>-</button>
      <span>{count}</span>
      <button onClick={increment}>+</button>
    </div>
  )
}

<Counter />
```

## Constraints

React components in Mintlify run in a sandboxed MDX environment with the following constraints:

{/* vale Mintlify.Ellipses = NO */}

- **React hooks are pre-injected**: `useState`, `useEffect`, `useRef`, `useCallback`, `useMemo`, `useContext`, and `useReducer` are available without importing them.
- **No external npm packages**: You cannot import third-party packages (for example, `lodash`, `axios`, `date-fns`). Use browser built-ins or write the logic inline.
- **No default exports**: Use named exports (`export const MyComponent = ...`). Default exports (`export default`) are not supported.
- **No cross-snippet imports**: Snippet files cannot import other snippet files. Import all dependencies directly in the parent MDX file.
- **No JSON imports**: Importing `.json` files is not supported.
- **No code splitting**: `React.lazy` and dynamic `import()` are not supported. All component code on a page, including imported snippets, compiles into the page and loads with it.

{/* vale Mintlify.Ellipses = YES */}

## Import components

Component files must be in the `/snippets/` folder. Learn more about [reusable snippets](/create/reusable-snippets).

<Note>
Nested imports are not supported. Import all referenced components directly into the parent MDX file.
</Note>

Create a component file in `snippets/`:

```mdx /snippets/color-generator.jsx [expandable]
export const ColorGenerator = () => {
  const [hue, setHue] = useState(180)
  const [saturation, setSaturation] = useState(50)
  const [lightness, setLightness] = useState(50)
  const [colors, setColors] = useState([])

  useEffect(() => {
    const newColors = []
    for (let i = 0; i < 5; i++) {
      const l = Math.max(10, Math.min(90, lightness - 20 + i * 10))
      newColors.push(`hsl(${hue}, ${saturation}%, ${l}%)`)
    }
    setColors(newColors)
  }, [hue, saturation, lightness])

  const copyToClipboard = (color) => {
    navigator.clipboard
      .writeText(color)
      .then(() => {
        console.log(`Copied ${color} to clipboard!`)
      })
      .catch((err) => {
        console.error("Failed to copy: ", err)
      })
  }

  return (
    <div className="p-4 border dark:border-zinc-950/80 rounded-xl not-prose">
      <div className="space-y-4">
        <div className="space-y-2">
          <label className="block text-sm text-zinc-950/70 dark:text-white/70">
            Hue: {hue}°
            <input
              type="range"
              min="0"
              max="360"
              value={hue}
              onChange={(e) => setHue(Number.parseInt(e.target.value))}
              className="w-full h-2 bg-zinc-950/20 rounded-lg appearance-none cursor-pointer dark:bg-white/20 mt-1"
              style={{
                background: `linear-gradient(to right, 
                  hsl(0, ${saturation}%, ${lightness}%), 
                  hsl(60, ${saturation}%, ${lightness}%), 
                  hsl(120, ${saturation}%, ${lightness}%), 
                  hsl(180, ${saturation}%, ${lightness}%), 
                  hsl(240, ${saturation}%, ${lightness}%), 
                  hsl(300, ${saturation}%, ${lightness}%), 
                  hsl(360, ${saturation}%, ${lightness}%))`,
              }}
            />
          </label>

          <label className="block text-sm text-zinc-950/70 dark:text-white/70">
            Saturation: {saturation}%
            <input
              type="range"
              min="0"
              max="100"
              value={saturation}
              onChange={(e) => setSaturation(Number.parseInt(e.target.value))}
              className="w-full h-2 bg-zinc-950/20 rounded-lg appearance-none cursor-pointer dark:bg-white/20 mt-1"
              style={{
                background: `linear-gradient(to right, 
                  hsl(${hue}, 0%, ${lightness}%), 
                  hsl(${hue}, 50%, ${lightness}%), 
                  hsl(${hue}, 100%, ${lightness}%))`,
              }}
            />
          </label>

          <label className="block text-sm text-zinc-950/70 dark:text-white/70">
            Lightness: {lightness}%
            <input
              type="range"
              min="0"
              max="100"
              value={lightness}
              onChange={(e) => setLightness(Number.parseInt(e.target.value))}
              className="w-full h-2 bg-zinc-950/20 rounded-lg appearance-none cursor-pointer dark:bg-white/20 mt-1"
              style={{
                background: `linear-gradient(to right, 
                  hsl(${hue}, ${saturation}%, 0%), 
                  hsl(${hue}, ${saturation}%, 50%), 
                  hsl(${hue}, ${saturation}%, 100%))`,
              }}
            />
          </label>
        </div>

        <div className="flex space-x-1">
          {colors.map((color, idx) => (
            <div
              key={idx}
              className="h-16 rounded flex-1 cursor-pointer transition-transform hover:scale-105"
              style={{ backgroundColor: color }}
              title={`Click to copy: ${color}`}
              onClick={() => copyToClipboard(color)}
            />
          ))}
        </div>

        <div className="text-sm font-mono text-zinc-950/70 dark:text-white/70">
          <p>
            Base color: hsl({hue}, {saturation}%, {lightness}%)
          </p>
        </div>
      </div>
    </div>
  )
}
```

Then import and use it:

```mdx
import { ColorGenerator } from "/snippets/color-generator.jsx"

<ColorGenerator />
```

<ColorGenerator />

## Considerations

- **SEO**: Search engines may not fully index client-rendered dynamic content.
- **Initial load**: Visitors may see a flash before components render.
- **Accessibility**: Ensure screen readers announce dynamic content changes.
- **Optimize dependency arrays**: Only include necessary dependencies in `useEffect`.
- **Memoize expensive operations**: Use `useMemo` or `useCallback` where appropriate.
- **Reduce re-renders**: Break large components into smaller ones.
- **Lazy loading**: Component code cannot lazy load. All components load with the page. If a component performs resource-intensive operations when it mounts, such as fetching data or heavy computation, use conditional rendering to defer mounting it until user interaction.