JSON Formatter & Validator

About JSON Formatter

JSON (JavaScript Object Notation) is a lightweight, text-based data interchange format that's easy for humans to read and write. Our JSON formatter helps you:

• Format & Beautify: Transform minified JSON into readable, properly indented format
• Validate: Check JSON syntax and identify errors with detailed error messages
• Minify: Compress JSON by removing unnecessary whitespace
• Syntax Highlighting: Color-coded display for better readability

Key Features

• Real-time JSON validation with error detection
• Syntax highlighting for improved readability
• Format beautification with customizable indentation
• JSON minification for reduced file size
• Copy to clipboard functionality
• Download formatted JSON as file
• Support for large JSON files
• Dark and light theme support

Common Use Cases

• API response formatting and debugging
• Configuration file validation
• Data structure visualization
• JSON schema validation
• Code documentation and sharing
• Database export formatting

JSON Best Practices

• Use double quotes for strings
• Avoid trailing commas
• Use consistent naming conventions
• Keep nesting levels reasonable
• Validate before deployment

Usage Examples

Example 1: Formatting Minified JSON

Input (Minified JSON):

{"name":"John Doe","age":30,"city":"New York","hobbies":["reading","swimming","coding"],"address":{"street":"123 Main St","zipcode":"10001"}}

Output (Formatted JSON):

{
  "name": "John Doe",
  "age": 30,
  "city": "New York",
  "hobbies": [
    "reading",
    "swimming",
    "coding"
  ],
  "address": {
    "street": "123 Main St",
    "zipcode": "10001"
  }
}

Example 2: JSON Validation with Error Detection

Input (Invalid JSON):

{
  "name": "John Doe",
  "age": 30,
  "city": "New York", // This comment is invalid in JSON
  "hobbies": [
    "reading",
    "swimming",
    "coding",  // Trailing comma is invalid
  ]
}

Validation Result:

Frequently Asked Questions