Online JSON Viewer

JSON, short for JavaScript Object Notation, is a lightweight computer data interchange format. JSON is a text-based, human-readable format for representing simple data structures and associative arrays (called objects).

Read more: json.org, wikipedia, w3schools

In JSON, they take on these forms

{
    "firstName": "John",
    "lastName": "Smith",
    "gender": "man",
    "age": 32,
    "address": {
        "streetAddress": "21 2nd Street",
        "city": "New York",
        "state": "NY",
        "postalCode": "10021"
    },
    "phoneNumbers": [
        { "type": "home", "number": "212 555-1234" },
        { "type": "fax", "number": "646 555-4567" }
    ]
}