JavaScript Beautifier

What Is the JavaScript Beautifier?

JS Beautifier formats JavaScript and TypeScript code with customizable bracket spacing, semicolon enforcement, quote styles (single vs. double), and operator spacing.

Step-by-Step: Using This Tool

1. Paste your JavaScript or TypeScript code.
2. Choose formatting style (2/4 spaces, add/keep semicolons, single/double quotes).
3. Click 'Beautify JavaScript'.
4. Copy clean, readable JS code.

Maximize Your Results

• De-Obfuscate Code: Format minified single-line scripts into multi-line structured code.
• ES6+ Syntax Support: Cleanly formats arrow functions, async/await blocks, template literals, and destructuring.
• Safe In-Browser Execution: Formatting runs locally without executing untrusted script code.

Related Guides & Tutorials

• Json Formatting For Developers — Learn in-depth concepts, best practices, and expert tips.
• Base64 Encoding Explained — Learn in-depth concepts, best practices, and expert tips.

Frequently Asked Questions

Can it un-minify any JS?

It reformats whitespace and structure. It cannot recover original variable names that were mangled during minification.

Is this different from a regex-based formatter?

Yes — this uses js-beautify, a real JavaScript-aware formatting engine, rather than simple pattern matching. That means it correctly handles complex nested structures, strings containing special characters, and other edge cases a naive regex approach can get wrong.

Will it change how my code behaves?

No — beautifying only affects whitespace and formatting, not the actual logic or behavior of your code.

Can I use this on TypeScript or JSX?

js-beautify is built for standard JavaScript. TypeScript-specific syntax or JSX may not format perfectly, since those require language-aware parsers beyond plain JavaScript.

How large a file can I paste in?

There's no hard limit, though very large files may take a bit longer to process since everything runs in your browser rather than on a server.

Does it support customizing the indentation style, like tabs versus spaces?

The tool applies js-beautify's standard formatting defaults. For project-specific style rules (like tab width or brace placement), a configured build-tool integration of js-beautify would offer more control than this quick browser-based version.

Cite This Tool

Referencing this tool in a paper, article, or bibliography? Copy a ready-made citation below.

NexLove.org. (2026). JavaScript Beautifier [Software]. https://nexlove.org/tools/js-beautifier.html

“JavaScript Beautifier.” NexLove.org, 2026, nexlove.org/tools/js-beautifier.html.

NexLove.org (2026) JavaScript Beautifier. Available at: https://nexlove.org/tools/js-beautifier.html (Accessed: 2026).

@misc{nexlove_js_beautifier,
  title = {JavaScript Beautifier},
  author = {{NexLove.org}},
  year = {2026},
  url = {https://nexlove.org/tools/js-beautifier.html}
}

Embed This Tool

Add the live JavaScript Beautifier tool to your own website with this snippet — it loads the real, working tool in an iframe, not a static screenshot.

<iframe src="https://nexlove.org/embed/js-beautifier.html" width="100%" height="600" style="border:1px solid #e2e8f0;border-radius:12px" title="JavaScript Beautifier — NexLove.org" loading="lazy"></iframe>