JSON Formatter

How to Use JSON Formatter

1. 1Paste your JSON data into the input text area
2. 2Click "Format" to beautify your JSON with proper indentation
3. 3Use "Minify" to compress JSON and remove all whitespace
4. 4Click "Copy" to copy the formatted result to your clipboard
5. 5Use "Clear" to reset the editor and start fresh

About JSON Formatter

Key Features of JSON Formatter

• Instant JSON beautification with configurable indentation
• One-click minification to remove all whitespace
• Real-time syntax validation with descriptive error messages
• Copy formatted output to clipboard with one click
• Works entirely in-browser — data never leaves your device
• Supports nested objects, arrays, strings, numbers, and booleans
• Sample JSON loader to explore the tool instantly
• Handles large JSON files smoothly

Supported Formats

Strict JSON only — comments and trailing commas are not supported by the JSON spec.

Examples

{"user":{"id":1,"name":"Alice","active":true},"roles":["admin","editor"]}

{
  "user": {
    "id": 1,
    "name": "Alice",
    "active": true
  },
  "roles": [
    "admin",
    "editor"
  ]
}

{
  "host": "localhost",
  "port": 3000,
  "debug": false
}

{"host":"localhost","port":3000,"debug":false}

Common Use Cases

• Debugging REST API responses during development
• Validating JSON config files before deployment
• Minifying JSON payloads to reduce bandwidth
• Understanding nested data structures in third-party APIs
• Formatting JSON data before pasting into documentation
• Checking if a JSON string is valid before parsing in code

Troubleshooting