Code Beautifier
Format and beautify JavaScript, CSS, or HTML code for better readability.
- JavaScript: Formats minified JS code with proper indentation and line breaks
- CSS: Expands compressed CSS rules into readable format
- HTML: Indents nested HTML elements for better structure visibility
- Use "Tabs" option if you prefer tabs over spaces for indentation
What Is Code Beautification?
Code beautification (also called pretty-printing or formatting) transforms minified, compressed, or poorly formatted code into a clean, readable format with proper indentation, line breaks, and spacing. It is the reverse of minification and is essential for debugging, code review, and understanding third-party or machine-generated code.
Supported Formats
| Format | What Gets Beautified |
|---|---|
| JSON | Proper indentation, one key-value pair per line, aligned braces and brackets |
| XML | Indented nested elements, one attribute per line for complex elements |
| JavaScript | Proper indentation, restored line breaks, formatted control structures |
| CSS | One property per line, indented within selectors, organized structure |
| HTML | Indented nested tags, aligned attributes, readable document structure |
| SQL | Keyword capitalization, indented clauses, formatted joins and subqueries |
Common Use Cases
- Debugging Minified Code: Beautify minified production JavaScript or CSS to read and debug it.
- API Response Inspection: Format compact JSON API responses for easy reading.
- Code Review: Normalize formatting before reviewing code from different contributors.
- Documentation: Format code examples for clear, consistent documentation.
- Learning: Understand complex nested structures (XML, HTML, JSON) by viewing them properly indented.
How to Use This Tool
- Paste your minified or messy code into the input area.
- Select the language (JavaScript, CSS, HTML, etc.).
- Click Beautify to format the code with proper indentation.
- Copy the formatted code using the Copy button.
Why Use This Tool?
- Make minified or obfuscated code readable in seconds.
- Supports multiple languages and formatting styles.
- Perfect for code reviews, debugging, and documentation.
- Runs in your browser — your code stays private.
Frequently Asked Questions
Does beautifying code change its functionality?
No. Beautification only changes whitespace and formatting. The code's logic and behavior remain identical. However, you should not beautify production code that was intentionally minified for performance.
What is the difference between beautifying and linting?
Beautification only adjusts formatting (indentation, spacing). Linting analyzes code for potential errors, style violations, and best practice issues. Tools like ESLint and Prettier combine both.