Code Beautifier
Format and beautify code in JSON, JavaScript, HTML, CSS, or XML. Choose a language and indentation size.
About this Code Beautifier
Format and beautify code in multiple languages with consistent indentation and readable structure. Our code beautifier supports JSON, JavaScript, HTML, CSS, and XML. Paste minified or messy code and get properly indented, formatted output. Perfect for developers reviewing API responses, cleaning up exported code, or preparing code for documentation. All processing happens in your browser for complete privacy.
Key Features
Format JSON, JavaScript, HTML, CSS, and XML
Configurable indentation (spaces)
Syntax-aware formatting where applicable
Copy formatted output to clipboard
Clear and reset in one click
Works entirely in your browser for privacy
How to Use
Select the language (JSON, JavaScript, HTML, CSS, or XML)
Paste your code into the input area
Set indentation size if desired (default 2 spaces)
Click Beautify to format the code
Copy the formatted output or use it in your project
Popular Use Cases
Format minified JSON from APIs
Beautify compressed JavaScript or HTML
Prepare code for documentation or reviews
Reformat CSS for readability
Clean up XML configuration or data
Make pasted code readable before editing
Tips & Best Practices
JSON formatting will validate and show errors on invalid input
Use 2 or 4 spaces for indentation depending on project style
For complex JavaScript, consider a full AST-based formatter for best results
Frequently Asked Questions
Which languages are supported?
The tool supports JSON, JavaScript, HTML, CSS, and XML. Select the language that matches your code for the best formatting result.
Is my code sent to a server?
No. Formatting runs entirely in your browser. Your code is never uploaded or stored.
Why does JavaScript formatting look basic?
This tool uses a lightweight formatter suitable for most cases. For complex or minified JavaScript with unusual syntax, an AST-based formatter (e.g. in your IDE) may produce more precise results.
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