JavaScript Formatter
Professional JavaScript code formatter with ES6+ support, syntax validation, and intelligent formatting. Powered by Monaco Editor for the best editing experience.
JavaScript Input
Formatted Output
Professional JavaScript Processing Features
Everything you need to work with JavaScript data efficiently and professionally
Advanced Validation
Comprehensive syntax validation with ESLint rules and modern JavaScript standards.
Smart Formatting
Intelligent code formatting with configurable indentation, spacing, and code style options.
Code Transformation
Convert between different JavaScript formats, modules, and transpilation options.
Monaco Editor Integration
Professional code editor experience with IntelliSense, syntax highlighting, and advanced editing features.
Customizable Rules
Configure ESLint rules, formatting preferences, and project-specific settings.
Privacy & Security
All processing happens locally in your browser. Your code never leaves your device.
How It Works
Simple steps to process your JavaScript like a pro
Input JavaScript
Paste your JavaScript code, upload a file, or load a sample to get started quickly.
Choose Action
Select from beautify, minify, or syntax validation operations.
Customize Options
Adjust formatting preferences, indentation settings, and code style options.
Export Results
Copy formatted code, download as file, or continue editing in the editor.
Professional JavaScript Formatter & Validator
Trusted by millions of developers worldwide for reliable JavaScript processing
Built by Experts
Our JavaScript formatter is developed by experienced JavaScript engineers with deep expertise in ECMAScript standards and modern web development. Built using industry-standard formatting conventions, it delivers professional-grade results for all JavaScript projects.
Key Technical Features:
- • Full ES6+ and modern JavaScript syntax support
- • Advanced error detection and code analysis
- • JavaScript to JSON conversion and vice versa
- • VS Code-powered Monaco Editor integration
- • 100% client-side processing for maximum privacy
- • Support for large files up to 10MB
Trusted & Secure
Trusted by JavaScript developers at major tech companies, open-source projects, and coding bootcamps worldwide. Our commitment to privacy means your JavaScript code never leaves your browser.
Security & Privacy:
- • 100% client-side processing - code never sent to servers
- • No tracking, cookies, or data collection
- • HTTPS encryption for secure connections
- • Open-source formatting algorithms
- • GDPR and CCPA compliant
Comprehensive JavaScript Processing Capabilities
Code Validation
Advanced JavaScript validation with ESLint integration and custom rule sets.
Advanced Formatting
Professional code beautification with customizable formatting options.
Format Conversion
Convert between different JavaScript formats and module systems.
Multiline Support
Handle complex multiline JavaScript structures with proper formatting.
Performance Optimized
Handle large JavaScript files efficiently.
Professional Editor
VSCode-powered Monaco Editor with JavaScript language support.
Trusted Across Industries
Development & Engineering
- Frontend web development
- Node.js backend development
- React, Vue, Angular framework development
- API development and RESTful services
Data & Analytics
- Unit testing and test-driven development
- Code debugging and analysis
- Production code minification
- Code analysis and performance optimization
Why Professionals Choose EZ Formatter
Join millions of JavaScript developers who trust our formatter for their daily coding workflow. No registration required, completely free, and built with privacy in mind.