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NeatUtility

JSX Formatter

Code Formatters100% Client-Side
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About this tool, examples & FAQ

Format messy React JSX components and templates into clean, readable code directly in your browser without sending code to remote servers.

Key facts

Verified capabilities and limits of this utility
Formatter EnginePrettier Babel JSX parser in an isolated Web Worker
Supported OperationsFormat JSX & React Components
Privacy & Security100% Client-side execution; code is never uploaded
Maximum Input5 MB

How to use

  1. Paste your React component or JSX fragment into the input editor.
  2. Choose indentation size, tab preferences, semicolon rules, and JSX quote style.
  3. Click 'Format JSX' to beautify your component markup and props.
  4. Copy or download the clean JSX code for your application.

Example

Format React Functional Component

Input

export const Button = ({ label, onClick }) => (
<button className='btn' onClick={onClick}>{label}</button>
);

Example output

export const Button = ({ label, onClick }) => (
  <button className="btn" onClick={onClick}>
    {label}
  </button>
);

Edge cases

Self-Closing Tags

Elements without children (<input />, <img />, custom self-closing components) format consistently with proper spacing before the closing slash.

Multiline Prop Wrapping

Components with multiple attributes wrap onto structured lines with aligned props according to standard JSX conventions.

React Fragments

Both short syntax (<>...</>) and explicit React.Fragment (<React.Fragment key={...}>...</React.Fragment>) format cleanly.

How it works

  1. Parses JSX components using Prettier's Babel parser inside a dedicated Web Worker.
  2. Aligns props, balances tags, indents nested elements, and normalizes attribute quotes.
  3. Captures and reports syntax error locations without executing component logic.
  4. Returns the formatted JSX markup directly to the workspace editor.

Related workflows

Frequently asked questions

Are my React components uploaded to a server?

No. All parsing and formatting happens locally in your browser using an isolated Web Worker.

Does this support React Hooks and modern state patterns?

Yes. Standard React functional components, custom hooks, and state declarations format seamlessly.

Can I use single quotes for JSX attributes?

Yes. Toggle the 'JSX Single Quotes' option to format attribute strings with single quotes instead of double quotes.

References