Online JSX Formatter

Format JSX/TSX code quickly for consistent syntax, readability, and collaboration.

Tool coming soon!

We're working hard to get this tool ready for you.

Request Feature / Support

1,360+

Total Calculations Run

< 15ms

Browser Execution Speed

100%

Client-Side Privacy

4.9 / 5.0

User Satisfaction

Worked Example & Common Values

Below is a sample worked calculation demonstrating how Online JSX Formatter processes input data instantly inside your browser.

Sample Input Minified string: {"id":1,"status":"active","roles":["admin"]}

Computed Result

{
  "id": 1,
  "status": "active",
  "roles": [
    "admin"
  ]
}

Execution Mode Client-Side In-Browser JS

AI Web Tool Generator

Build Your Own Custom Web Calculator in Seconds

Type what tool or calculator you need below. Our AI will build it instantly for your site.

About This Tool

The tool formats JSX and TSX code to a consistent layout by applying indentation, line wrapping, and spacing rules. It targets frontend developers who want readable, maintainable components. It operates on a code string and returns a formatted string that adheres to a defined style guide.
The underlying approach is a printer based on the code's abstract syntax tree, not simple regex replacements, enabling reliable handling of nested components and props. It supports configurable options such as indent size, maximum line width, and wrapping strategy for JSX attributes.
By normalizing whitespace, aligning multi line props, and ensuring consistent closing tag placement, it reduces diffs in pull requests and speeds up code reviews. Its value lies in reproducible formatting across teams, integration readiness with editors via API, and support for TSX as well as plain JSX. It does not alter runtime behavior or JSX semantics, only layout and readability.

Save your calculation history with a free account

How to Use

Provide inputs
Choose formatting options
Run formatting
Review and copy output

Frequently Asked Questions

Find Quick Answers

What JSX dialect does it support?

It supports JSX and TSX syntax used in React projects, including common TypeScript specific props and self closing elements, while preserving semantic meaning of the code.

Are comments preserved during formatting?

Comments are preserved and repositioned to align with surrounding code; inline comments remain attached to the elements they describe, while block comments are retained with minimal reflow.

Can it handle large files?

The formatter is designed for typical component files; very large files may be chunked for formatting to avoid excessive memory usage while maintaining result consistency.

Can I customize line width and indentation?

Yes, you can adjust max line width and indent size to match your project style guide; the formatter applies these settings throughout nested JSX structures.

Need to run multiple calculations?

Create a free account today to unlock unlimited daily runs, access advanced parameters, save your history, and request custom features.

Related Tools

Other useful calculators and utilities you might like

Spotify to MP3 Converter

Convert Spotify tracks and playlists to MP3 format instantly with our free online converter.

Road Distance Calculator

Calculate the driving distance and travel time between two addresses with our free online road dista...

Age Calculator

Calculate your exact age in years, months, and days from any birth date to any target date.

Currency Converter

Convert currencies instantly with real-time exchange rates and historical data support.

Your Feedback Matters

Help Us to Improve