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How to Format TSX/TypeScript React Code - Step by Step Guide

Step 1

Input Your TSX/TypeScript React Code

Let's get your TSX code into the formatter! Whether you're working with TypeScript React components, building type-safe applications, or want to ensure consistent code style, you have several convenient options:

•
Paste directly: Copy your TypeScript React component or TSX code and paste it into the input editor
•
Upload a file: Click "Upload" to select a .tsx, .ts, or .txt file from your computer
•
Try the sample: Click "Sample" to load example TypeScript React component code and see how the formatter works

Example: Unformatted TSX Input

Here's what messy, unformatted TSX looks like:

interface Props{user:User}const UserCard:React.FC<Props>=({user})=>{return (<div className="card"><img src={user.avatar} alt={user.name}/><h2>{user.name}</h2><p>{user.email}</p></div>)}
Step 2

Automatic Formatting & Syntax Check

Half a second after you stop typing, the TSX is read and laid out again with Prettier:

•
Checks the syntax first: Broken code gets the line and column of the problem instead of a half-formatted guess. Types are not checked; for a closer look at errors, try the TSX Validator
•
Re-indents and wraps: Makes typed components and long JSX tags easy to read, while strings and numbers stay exactly as you wrote them
•
Syntax highlighting: Color-codes TypeScript types, interfaces, and elements for better readability

Example: Beautifully Formatted Output

The same TSX, now properly formatted and readable with type annotations:

interface Props {
  user: User;
}
const UserCard: React.FC<Props> = ({ user }) => {
  return (
    <div className="card">
      <img src={user.avatar} alt={user.name} />
      <h2>{user.name}</h2>
      <p>{user.email}</p>
    </div>
  );
};
Step 3

Export Your Formatted TSX

Get your perfectly formatted TSX code ready for use! Multiple export options make it easy to integrate into your TypeScript React workflow:

•
Copy to clipboard: One-click copying for quick pasting into your code editor or IDE
•
Download as file: Save as a .tsx file for later use or sharing with your team
•
Minify option: Click "Minify" to put the same code on as few lines as possible, without ordinary comments
•
Syntax badge: "Valid TSX" means the code parsed cleanly. It says nothing about types, so still run tsc before you ship

Frequently Asked Questions

What is TSX and why do I need a formatter?

TSX is TypeScript with JSX in it, the file type most typed React components live in. Code pasted from a chat, a minified bundle or a teammate with different editor settings is hard to read and makes for noisy diffs. A formatter lays it out the same way every time: consistent indentation, one JSX attribute per line when a tag gets long, and line breaks in sensible places.

Which formatting style does it use?

It runs Prettier in your browser with its default settings: 2-space indentation, 80-character lines, semicolons and trailing commas. If your project already uses Prettier with the defaults, the output should match what your editor produces. Your own quote style is kept: a string you wrote with single quotes stays single-quoted.

Can formatting change what my code does?

No. Only whitespace, line breaks, parentheses, semicolons and trailing commas change. Strings, numbers, regexes and template literals are written back exactly as you typed them, so 14.50 stays 14.50 and 8901240544102066246 keeps every digit. Inside JSX, runs of spaces between words can be joined into one, which renders the same in the browser. Comments are kept.

Does it check my code for errors?

It checks the syntax. If the code can't be read, for example an unclosed tag, a missing bracket or a stray operator, you get the line and column of the problem instead of formatted output. It does not check types: a wrong prop type or a missing import is still valid syntax, so run tsc in your project for that.

Can I format plain .ts files or code snippets?

Yes. Plain TypeScript works, including older <Type>value casts that are only allowed outside JSX. You can also paste part of a component, such as a single return statement or a few hooks, and it will be formatted on its own.

What does the Minify button do?

It prints the same code on as few lines as possible and removes ordinary comments, keeping license banners and @ts-ignore style hints. Strings and numbers stay exactly as typed. It does not rename variables, so for real production bundles your build tool (Vite, webpack, esbuild) will still do a better job.

Is my code uploaded anywhere?

No. Formatting and minifying run entirely in your browser, nothing you paste or upload is sent to our server. Very large files work, but they take a little longer because everything happens on your own device.

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