اعتبارسنجی JSON

What is JSON Validation?

JSON validation is the process of checking whether a string of text conforms to the JSON specification. A valid JSON document has correct syntax: properly quoted strings, no trailing commas, no comments, and a single root element. Validation tells you immediately whether your JSON can be parsed — and if not, exactly where the problem is.

{
  "user": "alice",
  "age": 30,
  "active": true,
  "tags": ["admin", "editor"]
}

{
  "user": "alice",
  "age": 30,
}

Why Validate JSON?

Invalid JSON silently breaks APIs, configuration loaders, and data pipelines. A single misplaced comma can prevent an entire application from starting. Catching these errors at development time — not in production — is the difference between a smooth release and an outage.

Common JSON Validation Errors

These four mistakes account for the vast majority of JSON validation failures:

{ "a": 1, "b": 2, }

{ 'key': 'value' }

{ "val": undefined }

{ key: "value" }

Common Use Cases

Frequently Asked Questions