Messy, unindented code is a nightmare to read and debug. Our Universal Code Formatter automatically cleans up your syntax, applies consistent indentation, and makes your code human-readable again. It supports all major web formats including JSON, XML, HTML, CSS, and JavaScript.
What is a Code Beautifier?
A Code Beautifier (or Formatter) is a tool that parses raw source code and re-prints it according to a strict style guide. It adds proper line breaks, standardized indentation (spaces or tabs), and consistent spacing around brackets, transforming "spaghetti code" into a clean, professional structure.
Why Format Your Code?
- Instantly spot syntax errors like missing closing braces
- Make minified code readable again for debugging
- Standardize code style before committing to a repository
- Reduce eye strain by improving visual layout
- Convert between compact (minified) and pretty versions
- 100% Client-side processing keeps your proprietary code safe
How to Format Code
Select Language
Choose the language of your snippet (e.g., JSON, XML).
Paste Code
Input your raw or minified code into the editor.
Beautify
Click "Format" to apply indentation and spacing rules.
Copy Result
Copy the clean code back to your IDE.
Key Features
Multi-Language
Supports JSON, XML, HTML, CSS, and JavaScript in one tool.
Minification
Remove all whitespace to reduce file size for production.
Validation
Detects and highlights syntax errors before formatting.
Tab/Space Control
Choose between 2 spaces, 4 spaces, or tabs for indentation.
Live Preview
See the formatted result side-by-side with your input.
Best Practices
- Always validate JSON before formatting to ensure it is parseable
- Use 2 spaces for HTML/CSS and 4 spaces for Python/Java contexts
- Minify your CSS and JS before deploying to production
- Don't rely on formatters to fix broken logic - only syntax
Common Use Cases
API Response Types
Formatting raw JSON responses to understand the data structure.
Legacy Code Cleanup
Refactoring old, inconsistently formatted files.
Minified Debugging
Expanding minified errors from production logs.
Learning Syntax
Seeing how standard structures should look.
Frequently Asked Questions
Does it rewrite my logic?
No, it only changes whitespace and formatting. Your logic remains untouched.
Can it handle huge files?
Yes, but extremely large files (>5MB) might cause a brief browser pause.
Is my code sent to a server?
No. All formatting logic runs in JavaScript inside your browser.
Does it support TSX/JSX?
It supports standard JS. Complex TSX might need a specialized IDE.
Ready to Get Started?
100% browser-based. Your data never leaves your device.
Open Code Formatter & Beautifier