Format, validate, and beautify JSON data with error highlighting
Formatted JSON will appear here...
A JSON formatter is a tool that transforms raw, unformatted JSON data into a clean, readable structure with proper indentation and line breaks. JSON (JavaScript Object Notation) is a lightweight data format used extensively in web development, APIs, and configuration files. When working with APIs or debugging applications, JSON data often comes in a compact, minified format that's difficult to read. A JSON formatter beautifies this data, making it easier to understand the structure, identify errors, and work with nested objects and arrays.
Paste your JSON data into the input field on the left side
The tool automatically validates your JSON syntax in real-time
View the formatted output on the right side with proper indentation
Copy the formatted JSON using the copy button for use in your projects
Try the examples below to see how different JSON structures are formatted
API Response Debugging: Format API responses to quickly understand the data structure and identify issues
Configuration Files: Beautify JSON config files for better readability and maintenance
Data Validation: Verify that your JSON syntax is correct before using it in production
Code Documentation: Create readable JSON examples for documentation and tutorials
Data Minification: Convert formatted JSON to compact format to reduce file size for production
Learning & Education: Understand JSON structure and hierarchy through visual formatting
Instantly detect syntax errors with clear error messages
Color-coded output for better readability
Expand and collapse nested objects and arrays
Quickly copy formatted JSON to your clipboard
Switch between beautified and compact formats
All processing happens in your browser - no data is sent to servers
Handle large JSON files without restrictions