JSON Data Compare

What is JSON Data Compare?

JSON Data Compare is a powerful tool designed to compare the actual data values between two JSON documents. Unlike schema comparison tools that only check structure, this tool examines the actual values in your JSON files to identify differences, missing properties, and changed values.

How Does This Tool Work?

Simply upload or paste two JSON files into the text areas above. The tool will:

• Parse both JSON documents - Validates that both inputs are valid JSON
• Compare all properties - Examines every property path and its value
• Identify differences - Finds properties with different values, missing properties, and additional properties
• Present detailed results - Shows exact differences with before/after values
• Beautify JSON - Format your JSON with proper indentation for better readability

Key Features

• Value Comparison: Compares actual data values, not just structure
• Missing Properties Detection: Identifies properties in JSON 1 that are absent in JSON 2
• Additional Properties Detection: Identifies new properties in JSON 2 not present in JSON 1
• Value Difference Highlighting: Shows before/after values for changed properties
• Nested Object Support: Handles complex nested JSON structures
• Array Comparison: Compares array elements by position
• JSON Beautify: Format and prettify your JSON with one click
• Real-time Validation: Validates JSON syntax as you type or paste
• File Upload Support: Upload .json files directly (up to 10MB)
• Summary Statistics: Quick overview of total differences

Common Use Cases

• Configuration Comparison: Compare different versions of configuration files
• API Response Validation: Verify API responses match expected data
• Data Migration: Validate data before and after migration
• Testing: Compare expected vs actual test results
• Version Control: Identify what changed between versions
• Debugging: Find unexpected data changes in JSON files
• Data Synchronization: Verify data consistency across systems

Understanding the Results

The comparison results are organized into three categories:

• Value Differences: Properties that exist in both files but have different values
• Missing in JSON 2: Properties that exist in JSON 1 but not in JSON 2
• Additional in JSON 2: Properties that are new in JSON 2 and don't exist in JSON 1

Beautify JSON Feature

The beautify function formats your JSON with proper indentation and structure, making it:

• Easier to read and understand
• Properly indented with consistent spacing
• Formatted according to JSON standards
• More maintainable and professional-looking

Example JSON Files

Try comparing these example JSON data files:

JSON 1 Example:

{
  "user": {
    "id": 123,
    "name": "John Doe",
    "email": "john@example.com",
    "age": 30,
    "isActive": true
  },
  "settings": {
    "notifications": true,
    "theme": "light"
  }
}

JSON 2 Example:

{
  "user": {
    "id": 123,
    "name": "John Smith",
    "email": "john.smith@example.com",
    "age": 30,
    "isActive": false,
    "phone": "+1234567890"
  },
  "settings": {
    "notifications": false,
    "theme": "dark"
  }
}

This comparison would show:

• Value Differences: user.name, user.email, user.isActive, settings.notifications, settings.theme
• Additional in JSON 2: user.phone
• Total: 6 differences detected