Code Beautifier — HTML, CSS & JS Formatter

Beautify and format HTML, CSS, and JavaScript code with configurable indentation. Paste messy code and get clean, readable output instantly. Free online code formatter.

How to Use

1

Select the language

Choose HTML, CSS, or JavaScript using the tabs at the top. Each language applies its own formatting rules.

2

Paste and configure

Paste your minified or unformatted code in the left panel. Choose your preferred indent size (2 spaces, 4 spaces, or tab).

3

Beautify and copy

Click Beautify (or Ctrl+Enter). The formatted code appears on the right. Click Copy to copy it to your clipboard.

Frequently Asked Questions

What languages are supported? +
HTML, CSS, and JavaScript. Switch between them using the tabs at the top. Each language uses language-specific formatting rules.
What library powers the formatter? +
js-beautify v1.14, loaded on demand from cdnjs. It is the same library bundled in VS Code and used by millions of developers.
Can it format minified code? +
Yes — paste any minified HTML, CSS, or JS and click Beautify. The output will be properly indented and human-readable.
Is the library loaded only when needed? +
Yes. js-beautify (three files, ~90 KB combined) is only fetched when you click Beautify for the first time, keeping the page load fast.


Guide : Embellisseur de Code

Qu'est-ce que c'est ?

L'Embellisseur de Code formate et indente automatiquement le HTML, CSS, JavaScript, JSON, SQL et XML pour les rendre lisibles, en utilisant Prettier et des formateurs spécialisés.

Un code bien formaté est plus facile à lire, déboguer et maintenir — et facilite les revues de code.

Comment utiliser

  1. Collez votre code dans la zone d'entrée.
  2. Sélectionnez le langage (ou laissez la détection automatique).
  3. Cliquez sur Beautify pour formater le code.
  4. Copiez le code embelli.

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