CodeItBro

JavaScript Formatter

Format and beautify JavaScript code with advanced options. Clean up obfuscated code, fix indentation, and improve readability.

Formatting Options

Beautify Your JavaScript

transform messy, minified, or obfuscated code into clean, readable scripts. The developer's choice for code maintenance.

Modern JS Support

Handles ES6+, async/await, and latest syntax features without breaking structure.

Custom Indent

Choose between spaces (2/4) or tabs. Ensure your code matches your project's style guide.

Obfuscation Rescue

Perfect for decoding minified files or understanding legacy codebases.

Syntax Guard

Preserves code logic while reformatting. Comments and strings are kept intact.

How It Works

The JS 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

1

Paste or Upload

Enter your JavaScript code or upload a .js file.

2

Configure

Choose formatting options (indent, quotes, braces).

3

Export

Copy or download the formatted JavaScript.

Example Usage

Formatting JavaScript with proper indentation and spacing.

Input
function hello(){console.log('world')}
Output
function hello() { console.log('world'); }

Frequently Asked Questions

What does a JavaScript Formatter do?
It beautifies JavaScript by applying consistent indentation, spacing, and line breaks. This makes messy or minified code much easier to read and debug.
Will formatting change how my JavaScript runs?
No. Formatting changes whitespace and layout, not the logic. Your code should behave the same, as long as the input is valid JavaScript.
Can it format minified or obfuscated JavaScript?
It can usually format minified code into readable blocks. Obfuscated code may still look confusing because names and structure were intentionally made hard to read.
What should I do if the formatter throws an error?
The most common cause is invalid syntax. Check for missing brackets, unfinished strings, or pasted HTML mixed into JS. Fix the syntax and run the formatter again.
Is this JavaScript Formatter secure?
Yes. It runs 100% client-side, so your code is processed in your browser and never uploaded to a server.

Related Tools

JSON Formatter

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XML Formatter

Format and beautify XML code.

HTML Formatter

This free HTML formatter lets you beautify HTML files. Paste the content of your HTML file and the tool automatically formats it.

Online Syntax Highlighter

Highlight your code with syntax coloring for various languages. Generate HTML with inline styles or classes.

Diff Checker

Compare two text files or blocks of code to see the differences (additions, deletions, and changes).

The JS 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.