Free JSON Formatter & Validator Online

JSON Formatter is a free online tool that helps you format, validate, and beautify your JSON data. It transforms hard-to-read JSON strings into a structured, indented, and easy-to-navigate format with syntax highlighting.

Key Features of Our JSON Formatter

• Live JSON Validation with detailed error messages that help you quickly identify and fix issues in your code.
• Beautiful Syntax Highlighting that makes it easy to distinguish between different parts of your JSON structure.
• Intelligent Error Recovery that can automatically fix common JSON syntax errors like missing quotes and trailing commas.
• Tree View Navigation for exploring complex JSON structures with expandable and collapsible sections.
• One-Click Minify Option to compress your JSON for production environments, reducing file size.
• Complete Privacy - All processing happens in your browser. Your data never leaves your computer, making it safe for sensitive information.
• No Signup Required - Instantly access all features without creating an account or installing software.
• Cross-Platform Compatibility - Works on all major browsers and operating systems including Windows, Mac, and Linux.

Common Uses for JSON Formatter

• API Development - Format and validate API responses to ensure proper structure.
• Configuration Files - Verify JSON configuration files before deployment.
• Debugging - Identify syntax errors in JSON data quickly and efficiently.
• Data Analysis - Explore and understand complex JSON structures from databases or services.
• Learning JSON - Practice and understand JSON syntax with real-time feedback.

Why Use Our JSON Formatter?

JSON (JavaScript Object Notation) has become the standard data interchange format for web applications, APIs, and configuration files. However, raw JSON can be difficult to read, especially when it's minified or has a complex structure with nested objects and arrays.

Our JSON Formatter transforms raw JSON into a clean, indented format that's easy to read and understand. It also provides powerful validation to catch syntax errors that might otherwise be difficult to spot.

JSON Example

Try this JSON data example with our formatter:

{
  "users": [
    {
      "id": 1,
      "name": "John Smith",
      "email": "john@example.com",
      "isActive": true,
      "roles": ["admin", "user"],
      "metadata": {
        "lastLogin": "2023-09-15T10:30:00Z",
        "preferredTheme": "dark"
      }
    },
  ],
  "totalCount": 2,
  "version": "1.0",
  "generatedAt": "2023-10-01T12:00:00Z"
}

Learn More About JSON

• Official JSON Documentation
• Introduction to JSON - MDN Web Docs
• JSON Introduction - W3Schools