JSON Formatter
Format, validate and beautify JSON data with syntax highlighting
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.
Highlights
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.