🔧 JSON Formatter

Comprehensive JSON formatter offering validation, beautification, minification, syntax highlighting, and detailed analytics for professional JSON data processing and API development workflows.

Paste your JSON data here - can be minified, messy, or invalid
Choose indentation format for formatted output
Alphabetically sort object keys for consistent output and diffs
Remove all whitespace to create compact JSON for production
Display detailed JSON analysis including size, depth, and complexity
Only validate JSON syntax without formatting (useful for large files)

Formatted JSON Results:

📊 JSON Statistics

Objects: 3
Arrays: 2
Properties: 8
Max Depth: 2
Original Size: 256 bytes
Formatted Size: 384 bytes

✅ Formatted JSON (2-space indentation)

{
  "name": "John Doe",
  "age": 30,
  "location": {
    "city": "New York",
    "state": "NY",
    "country": "USA"
  },
  "hobbies": [
    "reading",
    "coding",
    "travel"
  ],
  "skills": {
    "javascript": true,
    "python": true,
    "react": false
  },
  "active": true,
  "lastLogin": "2025-07-27T10:30:00Z"
}

✅ Valid JSON: Syntax is correct and ready for use. No errors detected.

How to Use This JSON Formatter

How to Use the JSON Formatter:

  1. Paste your JSON data into the input field (can be minified or messy)
  2. Choose your preferred indentation style (2 spaces, 4 spaces, or tabs)
  3. Enable optional features like key sorting or minification
  4. Click "Format JSON" to process and validate your data
  5. Copy the formatted result or download as a file
  6. Review validation errors and statistics for quality analysis

Pro Tips: Use minification for production APIs, enable key sorting for consistent diffs, and check the statistics panel for JSON complexity analysis!

How It Works

Advanced JSON Processing Technology:

Our formatter uses native JavaScript JSON parsing with enhanced validation and formatting capabilities:

  1. Validation: Strict JSON.parse() with detailed error reporting and line detection
  2. Beautification: Configurable indentation with proper spacing and structure
  3. Key Sorting: Recursive alphabetical sorting for consistent output
  4. Minification: Whitespace removal for optimal file size and performance

Professional Features:

  • Real-time syntax validation with helpful error messages
  • Multiple indentation options for team coding standards
  • Comprehensive JSON statistics and complexity analysis
  • Privacy-focused client-side processing - no data transmission

When You Might Need This

Frequently Asked Questions

What happens if my JSON has syntax errors?

The tool highlights the exact location of syntax errors and provides helpful error messages to fix invalid JSON structure, missing quotes, or incorrect formatting.

Can I format very large JSON files?

Yes, the tool handles large JSON datasets efficiently. For extremely large files (>1MB), consider breaking them into smaller chunks for better browser performance.

Does the tool preserve data types and values?

Absolutely. The formatter only changes whitespace and indentation while preserving all data types, values, and structural relationships in your JSON.

How can I use this for API development?

Format API responses for debugging, create readable documentation examples, and validate request payloads before sending to ensure proper structure.

What's the difference between formatting and minifying?

Formatting adds whitespace and indentation for readability. Minifying removes unnecessary whitespace to reduce file size for production use.