JSON Formatter & Explorer - Free Online JSON Tools

Professional JSON formatter, validator, and explorer with real-time validation, tree view, JSON comparison, search functionality, and more. Free online tool for developers.

Features

• Format and pretty-print JSON with customizable indentation
• Real-time JSON validation with detailed error messages
• Side-by-side JSON comparison with diff highlighting
• Interactive tree view explorer with expand/collapse
• Advanced search and highlighting across JSON data
• JSONPath query support for data extraction
• Export to CSV format for arrays of objects
• Dark and light theme support
• Progressive Web App with offline support
• Privacy-focused - all processing happens in your browser

How to Use

1. Paste your JSON data into the editor
2. Use the Format button to pretty-print your JSON
3. Switch to Tree View to explore data structure
4. Use Compare tab to diff two JSON documents
5. Search for specific keys or values
6. Export your data as JSON or CSV