Next.js

MDX, Content & Markdown Workflows

28 min Lesson 54 of 80

MDX, Content & Markdown Workflows

This lesson expands the Next.js path with an advanced topic from the official Next.js documentation. The goal is not only to memorize an option or file name, but to understand its impact on rendering, caching, security, and deployment.

After this lesson you should be able to apply the topic in a real project, choose the right boundary for it, and explain it as a reviewable engineering decision.

Core Concepts

MDX setup
frontmatter strategy
custom MDX components
content collections
safe rendering

Practical Example

// next.config.mjs
import createMDX from '@next/mdx'

const withMDX = createMDX({ extension: /\.mdx?$/ })
export default withMDX({
  pageExtensions: ['js', 'jsx', 'md', 'mdx', 'ts', 'tsx'],
})

// mdx-components.tsx
export function useMDXComponents(components) {
  return { h2: (props) => <h2 className="section-title" {...props} />, ...components }
}

This lesson is aligned with these official Next.js documentation areas: MDX and content docs.

Why It Matters

In production applications, this topic affects page speed, data freshness, authorization clarity, and operational reliability after deployment.

Implementation Workflow

Decide whether the data is public or user-specific.
Choose the smallest part of the tree that needs this behavior.
Connect the example to a real route and add a small verification check.
Document the effect on caching and deployment.

Hands-on Practice

Build a docs section powered by MDX with reusable callout and code components.

Do not allow untrusted authors to execute arbitrary MDX components without review.

Summary

Judge the implementation by how clear the decision is, whether the behavior is correct after build, and how easily it can be traced in production.