JSON Viewer

Online JSON Viewer – Pretty JSON Formatter & Tree Viewer

Use our free Online JSON Viewer to format, visualize, and analyze raw JSON data with ease. This tool displays JSON in a structured, collapsible tree view with syntax highlighting—perfect for developers, analysts, and API testers.

What Is a JSON Viewer?

A JSON Viewer is a tool designed to convert unformatted or minified JSON into a clean, readable layout. It allows you to explore nested arrays and objects in an expandable tree view, helping you debug and understand complex structures quickly.

How to Use the JSON Viewer Tool

1. Paste or write your raw JSON data into the input box
2. Click the "View" button
3. Explore the formatted output in a collapsible tree layout with color-coded syntax

Example JSON Input

{
  "firstName": "John",
  "lastName": "Smith",
  "gender": "man",
  "age": 30,
  "address": {
    "streetAddress": "150",
    "city": "San Diego",
    "state": "CA",
    "postalCode": "263142"
  }
}

JSON Viewer Output Preview

• firstName: John
• lastName: Smith
• gender: man
• age: 30
• address:
  • streetAddress: 150
  • city: San Diego
  • state: CA
  • postalCode: 263142

Key Features

• View JSON in a collapsible tree structure
• Beautify minified or compressed JSON
• Supports deeply nested JSON objects and arrays
• Syntax highlighting for improved readability
• Handles large JSON files online

Use Cases

• Debugging API responses
• Formatting configuration files for better clarity
• Validating complex JSON objects
• Exploring stacked or deeply nested JSON files

Popular Search Queries

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