JSON

The text format most APIs use for data.

What is JSON?

JSON (JavaScript Object Notation) is the text format most APIs use for data: objects in { }, lists in [ ], and strings, numbers, true/false and null.

{
  "title": "Pancakes",
  "minutes": 20,
  "vegetarian": true,
  "tags": ["breakfast", "quick"]
}

Level: Novice · More Web Development terms at this level

Updated September 27, 2026