JSON Formatter

Format, validate, and analyze JSON with professional tools and insights

Input & Settings

Output

Formatted JSON will appear here

Analysis & Stats

JSON statistics will appear here

JSON Formatting Examples

Unformatted Input

{"name":"John","age":30,"city":"New York"}

Pretty Output

{
  "name": "John",
  "age": 30,
  "city": "New York"
}

Additional Examples

Formatting Minified JSON

Input:
{"name":"Alice","age":30,"city":"New York"}

Output:
{
  "name": "Alice",
  "age": 30,
  "city": "New York"
}

Converts a compact, single-line JSON string into a human-readable format with indentation.

Validating and Formatting Complex JSON

Input:
[ { "id": 1, "items": [ "apple", "banana" ] }, { "id": 2, "active": true, "config": null } ]

Output:
[
  {
    "id": 1,
    "items": [
      "apple",
      "banana"
    ]
  },
  {
    "id": 2,
    "active": true,
    "config": null
  }
]

Formats nested arrays and objects with consistent indentation, handling different data types (number, string, boolean, null).

Detecting Syntax Errors

Input:
{
  "name": "Bob",
  "age": 40 // Missing comma
  "isStudent": false
}

The tool will identify the missing comma after the 'age' field and report a validation error.