Code Formatter & Beautifier

Format and beautify HTML, JSON, CSS, JavaScript, and XML code with syntax highlighting

HTML
JSON
CSS
JavaScript
XML
Format Options
Lines: 0 | Characters: 0 
Formatted code will appear here...

How It Works

1

Paste Your Code

Enter unformatted or messy code

2

Select Language

Choose the appropriate syntax

3

Format & Copy

Get beautifully formatted code

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How to Use the Code Formatter

  1. Step 1: Select your programming language by clicking one of the language buttons (HTML, JSON, CSS, JavaScript, or XML). The correct syntax highlighting depends on choosing the right language.
  2. Step 2: Paste or type your unformatted code into the input textarea. The tool displays a live line count and character count to help you keep track of your code size.
  3. Step 3: Adjust formatting options such as indent size (2 spaces, 4 spaces, or tabs) and toggle the "Wrap long lines" option if you want to enforce a maximum line length for better readability.
  4. Step 4: Click "Format Code" to beautify your code, or use "Minify" to compress it. Copy the result with one click and paste it directly into your project.

Tips for Best Results

  • Always validate your code syntax before formatting — the formatter works best on syntactically correct code and will throw an error if it encounters parsing issues.
  • Use consistent indentation settings across your team. The 2-space indent is the most common for JavaScript and HTML, while 4-space indent is standard for Python and XML.
  • After minifying, always test your code in a browser or runtime environment to ensure the minification process did not introduce any functional issues.
  • For large code files, format in smaller chunks to avoid performance bottlenecks. The tool handles client-side processing, so very large files may slow down your browser.

Frequently Asked Questions

Q1: Is my code sent to any server when I format it?

No. The Code Formatter runs entirely in your browser using the js-beautify library. Your code never leaves your computer, making it safe for sensitive or proprietary code.

Q2: What is the difference between formatting and minifying?

Formatting (beautifying) adds proper indentation, line breaks, and spacing to make code human-readable. Minifying removes all unnecessary whitespace and comments to reduce file size for production use.

Q3: Can I format JSON that comes from an API response?

Yes. Simply paste the raw JSON string into the input, select the JSON language option, and click Format. The tool will parse and pretty-print the JSON with proper indentation and line breaks.