MDX Formatter

Format and beautify MDX files with JSX components. Fix indentation, organize imports, and clean up your markdown.

Indent Size:

Preserve Frontmatter

MDX Input

Paste MDX and click Format

Clean MDX Code

Working with MDX files that mix markdown and JSX? Our formatter properly indents JSX components, preserves frontmatter, and cleans up inconsistent spacing to make your content files readable and maintainable.

JSX + Markdown

Why Use This Tool?

JSX Aware

Properly indents React/JSX components nested in your MDX.

Frontmatter Safe

YAML frontmatter is preserved exactly as written.

Smart Cleanup

Removes excessive blank lines and normalizes spacing.

Easy Export

Download formatted MDX or copy to clipboard instantly.

How this MDX Formatter works

The MDX Formatter runs entirely in your browser using JavaScript. Unlike other tools that send your data to a server, we process everything locally on your device. This guarantees 100% privacy and blazing fast speed.

No server interaction – data never leaves your device
Instant results since there is no network latency
Works offline once the page is loaded
Free to use with no usage limits

How to use this MDX Formatter

Paste MDX

Enter your MDX content with frontmatter and components.

Configure

Set indent size and frontmatter preferences.

Format

Click format to beautify your MDX code.

Example Usage

Formatting a JSX component:

Input

<Alert type="info"> Message </Alert>

Output

<Alert type="info"> Message </Alert>

Frequently Asked Questions

What is MDX?

MDX is markdown enhanced with JSX, allowing you to use React components in your markdown documents.

Does it preserve frontmatter?

Yes! YAML frontmatter at the top of your document is preserved and properly formatted.

How are JSX components handled?

JSX components are properly indented based on their nesting level while preserving their attributes.

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The MDX Formatter is maintained by CodeItBro. We aim to provide the best free developer tools on the web. If you have feedback or suggestions, please visit our contact page.

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