JSON Formatter & Validator Tool

JSON Formatter & Validator Tool

Format, validate, and analyze JSON data with syntax highlighting

Format Options

Formatting Options

Input JSON

Simple
Complex
Array
Invalid

Processing…

Formatted JSON

JSON Statistics

Validation Result

JSON will be validated here

Recent Operations

Your JSON operations will appear here

About JSON Formatter

JSON (JavaScript Object Notation) is a lightweight data interchange format that is easy for humans to read and write and easy for machines to parse and generate.

  • Syntax Rules: Data is in name/value pairs, separated by commas, curly braces hold objects, square brackets hold arrays
  • Data Types: Strings, numbers, booleans, arrays, objects, null
  • Common Uses: APIs, configuration files, data storage, web services
  • Validation: JSON must be properly formatted with correct syntax
  • Formatting: Improves readability with proper indentation and line breaks

Example JSON Structure:

{
  "name": "John Doe",
  "age": 30,
  "active": true,
  "tags": ["user", "premium"],
  "address": {
    "street": "123 Main St",
    "city": "Anytown"
  }
}
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