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Code Beautifier

Beautify and format HTML, CSS, and JavaScript code instantly.

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Free Online Code Beautifier — HTML, CSS & JavaScript

Transform messy, minified, or poorly indented code into clean, readable output with proper formatting. UtilHub's Code Beautifier supports HTML, CSS, and JavaScript, automatically applying consistent indentation, line breaks, and spacing. Paste your code, select the language, and get production-ready formatting instantly. Great for cleaning up minified vendor files, standardizing code style before reviews, or making inherited code actually readable.

How to use Code Beautifier

  • Paste code.
  • Select language (HTML, CSS, JS).
  • Click "Format".
  • Copy result.

Features

  • Multi-language support — Beautify HTML, CSS, and JavaScript in a single tool. Auto-detects language or lets you specify manually.
  • Customizable indentation — Choose between 2 spaces, 4 spaces, or tabs. Match your project's code style guide effortlessly.
  • Minified code handling — Expands single-line minified files into properly formatted, multi-line code with correct nesting.
  • Preserves functionality — Only changes whitespace and formatting. Your code logic, comments, and strings remain completely untouched.

Frequently Asked Questions

Does the beautifier change my code logic or just the formatting?

Only the formatting. The tool adjusts indentation, line breaks, and whitespace. It never modifies your code logic, variable names, comments, or string contents. What goes in and what comes out are functionally identical — just formatted differently.

Can I beautify minified JavaScript?

Yes. Paste a single-line minified JS file and the beautifier will expand it into properly indented, readable code with correct line breaks. This is especially useful for debugging vendor libraries or inspecting minified production code.