Free JSON Formatter & Validator
Format, validate, beautify, and minify JSON data instantly. Copy to clipboard or download formatted JSON files.
Input JSON
Formatted JSON
How to Use JSON Formatter
• Choose between Format mode for pretty-printing or Minify mode for compression
• Paste your JSON data in the input textarea
• The tool automatically validates and formats your JSON in real-time
• Copy the formatted JSON to clipboard or download as a .json file
• View JSON statistics including size, keys, depth, and data type
• Error messages will help you fix invalid JSON syntax
Professional JSON Formatter & Validator - Free Online Tool
Our free JSON formatter and validator is an essential tool for developers, API designers, and data analysts who work with JSON data regularly. Whether you need to format messy JSON from an API response, validate JSON syntax, or minify JSON for production use, this tool provides instant, accurate results with detailed error reporting.
Key Features:
- Real-time Validation: Instantly validate JSON syntax with detailed error messages
- Pretty Print Formatting: Beautify JSON with customizable indentation (2, 4, or 8 spaces)
- JSON Minification: Compress JSON by removing whitespace for production use
- JSON Statistics: Analyze size, key count, nesting depth, and data types
- Copy to Clipboard: One-click copying for both input and output JSON
- File Download: Download formatted JSON as .json files
- Error Highlighting: Clear error messages with line-by-line validation
- Example Data: Load sample JSON to test the tool functionality
Common Use Cases:
- API response formatting and debugging
- Configuration file validation and formatting
- Database export/import data processing
- JSON schema validation and development
- Web service payload optimization
- Data transformation and migration tasks
- Code documentation and examples
- Educational purposes and JSON learning
Why JSON Formatting Matters:
Properly formatted JSON is crucial for development efficiency and debugging. Well-formatted JSON improves code readability, makes debugging easier, and helps identify structural issues quickly. Our tool ensures your JSON follows standard formatting conventions and is syntactically correct, saving you time and preventing runtime errors.
Privacy & Security:
All JSON processing happens entirely in your browser - no data is sent to external servers. This ensures your sensitive configuration files, API keys, and proprietary data remain completely private and secure. The tool works offline once loaded, making it perfect for secure environments and confidential projects.
Start formatting your JSON now - simply paste your JSON data above and get instant validation, formatting, and analysis. Perfect for developers, DevOps engineers, data scientists, and anyone working with JSON data structures.