Free Code Formatter & Beautifier - HTML, CSS, JS
Format and beautify your code instantly with professional-grade formatting. Support for JavaScript, TypeScript, HTML, CSS, JSON, and more with customizable style presets.
Indentation
Code Style
Why Code Formatting Matters
Code formatting is far more than aesthetic preference—it's a fundamental aspect of professional software development that directly impacts code quality, team productivity, and project maintainability. Well-formatted code serves as the foundation for clean, readable, and sustainable software projects.
Enhanced Code Readability: Properly formatted code significantly reduces cognitive load when reading and understanding code. Consistent indentation, spacing, and structure allow developers to quickly grasp the code's logic flow, identify potential issues, and understand complex algorithms without being distracted by inconsistent formatting patterns.
Improved Team Collaboration: When multiple developers work on the same codebase, consistent formatting becomes crucial for seamless collaboration. Standardized formatting eliminates style-related debates during code reviews, allowing teams to focus on logic, performance, and architecture rather than spacing and indentation preferences.
Reduced Bug Probability: Clean formatting often reveals logical errors that might be hidden in poorly structured code. Proper alignment of brackets, consistent indentation, and logical spacing help developers spot missing parentheses, incorrect nesting, and other syntax issues that could lead to runtime errors.
Professional Development Standards: Following established formatting standards like Airbnb, Google, or Prettier demonstrates professional coding practices and makes codebases more accessible to new team members. These standards have been developed through years of collective experience and represent industry best practices for code organization and presentation.
Comprehensive Language Support
Core Web Technologies
- JavaScript & TypeScript: Complete support for modern ES6+ syntax, TypeScript type annotations, async/await patterns, and React JSX components with customizable formatting rules.
- HTML & CSS: Advanced formatting for HTML documents including proper attribute alignment, nested element indentation, and CSS rules with support for modern features like Grid and Flexbox.
- JSON & YAML: Structured data formatting with proper indentation, key alignment, and validation to ensure data integrity while maintaining readability.
Advanced Features
- Smart Language Detection: Automatically detects file types from uploaded files, applying appropriate parsing rules and formatting standards for optimal results.
- Markdown Support: Formats documentation files with proper heading hierarchy, list alignment, and code block formatting for technical documentation.
- Framework Integration: Specialized support for React JSX, Vue.js templates, and other popular frameworks with framework-specific formatting rules.
Format Quality Features:
Development Workflow Integration
IDE and Editor Integration
Our code formatter serves as an excellent complement to your existing development environment. While modern IDEs include formatting capabilities, our online tool provides additional flexibility for quick formatting tasks, team standardization, and cross-platform consistency.
- Quick Formatting: Perfect for rapid code cleanup without opening your full IDE
- Team Standardization: Ensure consistent formatting across different development environments
- Configuration Testing: Test different formatting rules before implementing them project-wide
- Cross-Platform Access: Format code from any device with web browser access
Team Coding Standards
Establishing consistent coding standards across your development team becomes effortless with standardized formatting rules. Our tool supports popular style guides that have been adopted by leading technology companies worldwide.
- Onboarding: New team members can quickly understand and follow established code style
- Code Reviews: Focus discussions on logic rather than formatting preferences
- Maintenance: Consistently formatted code is easier to debug and modify over time
Frequently Asked Questions
Q: What programming languages does the formatter support?
Our formatter supports JavaScript, TypeScript, HTML, CSS, JSON, JSX/React, Markdown, and YAML. Each language has specialized parsing rules and formatting options optimized for that specific syntax and commonly used patterns.
Q: How do the different style presets (Airbnb, Google, etc.) differ?
Each preset represents a different coding philosophy: Airbnb emphasizes readability with single quotes and trailing commas; Google focuses on consistency with specific line width limits; Standard JS avoids semicolons for cleaner syntax; Prettier balances practicality with widespread adoption.
Q: Can I customize the formatting rules beyond the presets?
Absolutely! While presets provide excellent starting points, you can fine-tune indentation size, choose between tabs and spaces, configure quote preferences, set line width limits, and adjust comma placement to match your team's specific requirements.
Q: Will formatting change the functionality of my code?
No, our formatter only changes whitespace, indentation, and syntax style without altering your code's logic or functionality. It's designed to preserve all semantic meaning while improving visual structure and readability.
Q: How does this compare to IDE formatting features?
While IDE formatters are excellent for development workflow, our online tool offers advantages for quick formatting tasks, testing different style configurations, ensuring cross-platform consistency, and formatting code when you don't have access to your usual development environment.
Q: Can I upload files directly for formatting?
Yes! You can upload code files directly, and our tool will automatically detect the language based on the file extension. Supported file types include .js, .ts, .html, .css, .json, .jsx, .tsx, .md, .yaml, and .yml files.
- TipChoose different presets to match your team's coding standards (Airbnb, Google, etc.)
- TipUpload files directly or paste code for quick formatting
- TipThe formatter automatically detects file types from uploaded files
- TipFine-tune formatting with custom indentation, quotes, and comma settings
Our Code Formatter uses Prettier, the industry-standard code formatter, to automatically format your code according to established style guides.
Supported Languages: JavaScript, TypeScript, HTML, CSS, JSON, JSX, Markdown, and YAML.
Style Presets: Choose from popular coding standards like Airbnb, Google, Standard JS, or customize your own formatting rules.
Perfect for developers, teams, and anyone who wants clean, consistently formatted code.
Related Tools
Epoch Converter
Convert Unix timestamps found in log files and debugging code to human-readable dates.
Convert Timestamps →PDF Splitter
Extract specific pages from technical documentation and code-related PDF files.
Split PDF Files →Content Summarizer
Summarize technical documentation and code comments for better understanding.
Summarize Content →