Online JSON Validator Tool


If you find this JSON tool useful, please Bookmark by pressing Windows (Command on Mac) + D on your device.

Enter JSON String:



Result:


Reasons for Invalid JSON Object Types

  • The JSON Object is Missing Quotes Around The Keys:

    Example:

    {
      name: "USA",
      population: 328.2
    }
    
    Online JSON Validator Tool
  • If JSON Object is Missing Key Value(s):

    Example:

    {
      "name": "USA",
      "population":
    }
    
  • If JSON Object is having single quotes instead of double:

    Example:

    {
      'name': 'France',
      'capital': 'Paris'
    }
    
  • The JSON has an Extra Trailing Comma:

    Example:

    {
      "name": "Germany",
      "capital": "Berlin",
      "population": 82.8,
    }
    
  • The JSON is Missing Comma():

    Example:

    {
      "name": "Germany",
      "capital": "Berlin"
      "population": 82.8
    }
    
  • Invalid Nested JSON:
    {
      "name": "China",
      "cities": [
        "Beijing",
        "Shanghai",
        "Guangzhou",
        {[
          "name": "Chengdu",
          "population": 16.3
        ]}
      ]
    }
    
Author Info:

Rakesh (He/Him) has over 14+ years of experience in Web and Application development. He is the author of insightful How-To articles for Code2care.

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