JSON Viewer

View and explore your JSON data with a formatted representation, structural statistics, and a breakdown of value types across all nesting levels.

Formatted View

{ "company": "Acme Corp", "founded": 1999, "employees": 1200, "headquarters": { "city": "San Francisco", "country": "USA" }, "products": [ "Widget A", "Widget B", "Widget C" ], "listed": true }

Root Type

Object

Total Keys

Nesting Depth

Value Types

Strings: 6, Numbers: 2, Booleans: 1, Nulls: 0

Formatted View

{
  "company": "Acme Corp",
  "founded": 1999,
  "employees": 1200,
  "headquarters": {
    "city": "San Francisco",
    "country": "USA"
  },
  "products": [
    "Widget A",
    "Widget B",
    "Widget C"
  ],
  "listed": true
}

How It Works

Formula

JSON.parse(input) → structured analysis

Worked Example

An API response with 45 keys, 3 nesting levels, 12 strings, 8 numbers, and 2 booleans is instantly summarized.

What the JSON Viewer Shows

When you paste JSON into the viewer, it reports:

Statistic	Description
Root Type	Whether the top-level container is an Object, Array, or primitive
Total Keys	Sum of all keys across every object in the document
Nesting Depth	Maximum depth from root to deepest leaf value
Type Breakdown	Count of string, number, boolean, and null values in the entire document

This structural overview is particularly useful when receiving an unfamiliar API response and needing to quickly understand its shape before writing parsing code.

Frequently Asked Questions

What is a JSON viewer?

A JSON viewer displays raw or minified JSON in a readable, formatted layout and provides structural metadata such as key counts, type statistics, and nesting depth without requiring any code.

What value types does JSON support?

JSON supports six types: string (text in double quotes), number (integer or float), boolean (true/false), null, object (key-value pairs in {}), and array (ordered list in []).

What is nesting depth?

Nesting depth measures how many container levels deep the most nested value is. A flat object is depth 1. Each additional nested object or array increases depth by 1.

Is my data private when using this tool?

Yes. The viewer uses your browser's native JSON.parse() and JSON.stringify() APIs entirely client-side. No data is transmitted to any external server.

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