JSON Formatter & Validator

What is a JSON Formatter?

A JSON formatter is a tool that takes raw, minified, or poorly structured JSON data and transforms it into a clean, readable format with proper indentation and line breaks. JSON (JavaScript Object Notation) is the standard data format for web APIs and configuration files.

What is JSON formatter? It's a utility that beautifies JSON text, making nested objects and arrays visually clear. This is essential for debugging API responses, reviewing configuration files, and understanding complex data structures.

JSON Validator Online

Our online JSON validator checks your JSON syntax in real-time, identifying errors instantly with precise line numbers and clear error messages. Validation happens entirely in your browser for maximum speed and privacy.

Why use a JSON validator? Invalid JSON breaks applications and APIs. Validating JSON before use prevents runtime errors, failed API calls, and data corruption. Our validator catches syntax errors like missing commas, unquoted strings, and malformed arrays before they cause problems.

Features of this JSON Tool

How to Format JSON Online

How to format JSON? Follow these simple steps:

1. 1
   Paste your JSON — Copy your JSON data and paste it into the input panel on the left, or upload a file / load from URL.
2. 2
   Click Format — Press the Format button to beautify your JSON with proper indentation. Use Minify to compress it instead.
3. 3
   Copy the result — Click the copy button to copy the formatted JSON to your clipboard, or download it as a file.

Frequently Asked Questions

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Example JSON

Here's an example of properly formatted JSON structure:

{
  "user": {
    "id": 12345,
    "name": "John Doe",
    "email": "john@example.com",
    "isActive": true
  },
  "orders": [
    {
      "orderId": "ORD-001",
      "total": 99.99,
      "items": ["Widget", "Gadget"]
    }
  ],
  "metadata": null
}