# JavaScript Formatter

> Beautify and format minified or messy JavaScript code

**Category:** Dev
**Keywords:** javascript, formatter, beautify, minify, js, code, prettify, indent, format
**URL:** https://complete.tools/javascript-formatter

## How to use

1. Paste your JavaScript into the input box, or click "Load Example" to try a sample
2. Choose your preferred indentation (2 spaces, 4 spaces, or tab)
3. Click "Beautify JS" to format, or "Minify JS" to compress
4. Copy the result with the Copy button

## Why format JavaScript?

Minified JavaScript is essential for production -- it loads faster because it has fewer bytes. But minified code is nearly impossible to read or debug. Formatted JavaScript is:

- **Easier to read** -- clear structure, consistent indentation, logical line breaks
- **Easier to debug** -- browser DevTools and stack traces reference meaningful line numbers
- **Easier to understand** -- unfamiliar code reveals its logic when properly structured
- **Easier to edit** -- find and modify the right lines without hunting through a single line of thousands of characters

## Beautify vs. Minify

**Beautify** expands JavaScript so every statement and block is clearly indented. Use this when:
- You want to read JavaScript from a bundled file or third-party script
- You're debugging a runtime error and need readable code
- You're learning from or auditing someone else's code

**Minify** compresses JavaScript by removing all whitespace and comments. Use this when:
- Deploying to production for faster page loads
- Reducing file size before inlining a script tag
- Your build tool doesn't already handle minification

## FAQs

**Q:** Does my code get sent to a server?


**A:** No. All formatting happens in your browser using JavaScript. Your code never leaves your device.


**Q:** Will this handle modern JavaScript syntax like arrow functions and destructuring?


**A:** Yes. The formatter works on any valid JavaScript syntax, including ES6+ features like arrow functions, template literals, destructuring, and async/await.


**Q:** What about TypeScript or JSX?


**A:** This tool formats standard JavaScript only. TypeScript type annotations and JSX syntax (React components) are not supported.


**Q:** Can I format a full minified bundle?


**A:** Yes. Paste as much JavaScript as you need -- there is no size limit. Note that very large bundles (hundreds of KB) may take a moment to process.


**Q:** What indent size should I use?


**A:** 2 spaces is standard in most JavaScript communities (Node.js, React, Vue, Google style guide). 4 spaces is common in projects using the Microsoft/TypeScript style. Tabs are preferred when accessibility matters -- screen readers and editors can render tab width differently per-user preference.

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*Generated from [complete.tools/javascript-formatter](https://complete.tools/javascript-formatter)*