JSON Formatter
Professional JSON formatting and validation tool with advanced features for developers. Instantly validate JSON syntax with detailed error messages, beautify code with customizable indentation (2, 4, or 8 spaces), and minify for production use. Supports file upload/download, drag & drop functionality, one-click copy to clipboard, and real-time syntax highlighting. All processing happens locally in your browser for complete privacy and security. Perfect for debugging, code review, and API development workflows.
Instant Validation
Real-time JSON syntax validation with detailed error messages and line-by-line debugging support.
Smart Formatting
Beautify JSON with customizable indentation (2, 4, or 8 spaces) and proper syntax highlighting.
File Operations
Upload JSON files directly or download formatted results. Supports drag & drop for seamless workflow.
Quick Actions
One-click format, minify, copy to clipboard, and clear operations for maximum productivity.
Privacy First
All processing happens locally in your browser. Your data never leaves your device.