React components

Build interactive elements in your docs using React components and 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>
      <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:

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.

Import components

Component files must be in the /snippets/ folder. Learn more about reusable snippets.

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

Create a component file in snippets/:

/snippets/color-generator.jsx

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:

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

<ColorGenerator />

Considerations

Client-side rendering only: Custom components render in the browser after the page loads, so they aren’t in the server-rendered HTML. This applies to components you define with export in an MDX file and components you import by name from a snippet, such as import { ColorGenerator } from "/snippets/color-generator.jsx". MDX snippets that you import as content, such as import MySnippet from "/snippets/my-snippet.mdx", render on the server.
SEO: Because custom components are not in the initial HTML, search engines may not fully index their content.
Initial load: Visitors may see a flash or layout shift while custom components render. For content that must appear in the initial HTML or must not shift on load, use built-in components such as cards and columns instead. Most built-in components render on the server.
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.

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Inline components

Constraints

Import components

Considerations

​Inline components

​Constraints

​Import components

​Considerations

Inline components

Constraints

Import components

Considerations