Free JSON Formatter & Validator Online

JSON Formatter & Validator Tool (Free Online)

Use this free JSON Formatter and Validator to format, beautify, and validate JSON data instantly. This tool helps developers, testers, and API users quickly identify errors and convert messy JSON into a clean, readable format.

🔍 What is JSON Formatting?

JSON (JavaScript Object Notation) is a lightweight data format used in APIs and web applications. Formatting JSON means organizing it with proper indentation and structure so it becomes easy to read and debug.

⚙️ How to Use This Tool

1. Paste your JSON data into the input box
2. Click on Format / Validate
3. View formatted JSON output instantly
4. Fix errors if validation fails

🚀 Features

• ✔️ Format JSON with proper indentation
• ✔️ Validate JSON and highlight errors
• ✔️ Supports large JSON data
• ✔️ One-click copy functionality
• ✔️ Works directly in browser (no installation)

💡 Who Can Use This Tool?

• API Testers
• Automation Engineers
• Developers
• Students learning JSON

📌 Example

Input:
{"name":"John","age":30,"city":"Delhi"}

Output:
{
  "name": "John",
  "age": 30,
  "city": "Delhi"
}

JSON Formatter & Validator

Output: