Reference

JSON Examples: From Hello World to Real API Payloads

The fastest way to learn JSON is to read good JSON. Here are copy-ready examples for every common shape — from a minimal object to a realistic API payload — each annotated with what matters.

In short

This reference collects copy-ready JSON examples for every common shape: a minimal object, arrays of values and of objects, nested objects with null, a realistic API envelope with pagination metadata, and configuration-style nesting. Each example uses double-quoted keys and strings, typed numbers and booleans, and no trailing commas — the patterns that appear in real API payloads and config files.

By NaveenKumar T · Software engineer · builds and maintains NV Toolkit Published 2026-06-04 2 min read

A minimal object

The smallest useful JSON: one object, three keys, three different value types. Note the double quotes on keys and string values, and the absence of a trailing comma after the last pair.

json

{
  "id": 101,
  "name": "Mechanical Keyboard",
  "inStock": true
}

Arrays — of values and of objects

Arrays hold ordered values of any type. The array-of-objects pattern below is the single most common shape in real APIs: a list of records, each with the same fields. When you convert JSON to CSV, each of these objects becomes one row.

json

{
  "tags": ["sale", "wireless", "new"],
  "items": [
    { "sku": "KB-75", "qty": 1, "price": 149.99 },
    { "sku": "MS-12", "qty": 2, "price": 39.5 }
  ]
}

Nesting and null

Objects nest to any depth, and null states explicitly that a value is absent — different from omitting the key entirely. Consumers should handle both: shippedAt may be null today and a timestamp tomorrow.

json

{
  "order": {
    "id": "ORD-2026-0612",
    "customer": { "name": "Ada Lovelace", "vip": true },
    "shippedAt": null
  }
}

A realistic API response

Production APIs wrap data in an envelope: a status, the payload, and metadata like pagination. This is the shape you'll meet daily — and the one worth practicing with a tree viewer to navigate quickly.

json

{
  "status": "success",
  "data": [
    { "id": 1, "email": "ada@example.com", "roles": ["admin"] },
    { "id": 2, "email": "grace@example.com", "roles": ["editor", "billing"] }
  ],
  "meta": { "page": 1, "perPage": 20, "total": 137 }
}

Configuration file style

Config JSON favors nested objects over arrays, grouping settings by domain. (If you find yourself wanting comments in files like this, that's what JSON5 — and our JSON5 tools — exist for.)

json

{
  "server": { "port": 8080, "host": "0.0.0.0" },
  "logging": { "level": "info", "format": "json" },
  "features": { "darkMode": true, "beta": false }
}

How this was tested: Syntax examples were validated with the site's own parser (JSON.parse) on 2026-09-10.

Sources

Frequently asked questions

Can JSON contain dates?

Not natively — JSON has no date type. The universal convention is ISO 8601 strings ("2026-06-04T09:30:00Z"), which sort correctly as text and parse in every language. Unix timestamps as numbers are the compact alternative.

What's the most common JSON structure in real APIs?

An envelope object containing an array of records plus metadata: { "data": [...], "meta": { "page": 1 } }. Learn to read that shape fluently and most API responses become instantly familiar.

How can I test and modify these examples?

Paste any of them into our JSON Editor — you get live validation while you experiment, a tree view to see the structure, and one-click conversion to CSV, YAML, or XML to see the same data in other formats.

Paste any of these into the JSON Editor and modify them with live validation — the fastest way to build intuition.

Experiment live

Keep working

JSON Examples: From Hello World to Real API Payloads

A minimal object

Arrays — of values and of objects

Nesting and null

A realistic API response

Configuration file style

Sources

Frequently asked questions

Related tools

JSON Formatter

JSON Editor

JSON Viewer

JSON to CSV

JSONPath Tester

JSON to TypeScript

JSON to Java

JSON to Python

JSON to C#

JSON to Go

JSON to JSON Schema

JSON to Kotlin

JSON to Swift

JSON to Rust

JSON to Dart

JSON to Ruby

JSON to C++

JSON to Objective-C

JSON to Crystal

JSON to Elm

JSON to Haskell

JSON to Pike

JSON to JavaScript PropTypes

Java Formatter

C# Formatter

Java Escape

.NET Escape