JSON Validator: Avoid Common JSON Mistakes

Why Validate JSON?

JSON must follow specific syntax rules. A small mistake such as a missing quotation mark, comma, or closing bracket can make an otherwise useful JSON document invalid.

Common JSON Mistakes

Missing Quotes Around Keys

JSON object keys normally need double quotation marks.

Trailing Commas

JSON does not allow an unnecessary comma after the final item in an object or array.

Incorrect Brackets

Objects use curly braces and arrays use square brackets. Opening and closing brackets must match correctly.

Invalid Values

JSON supports specific value types including strings, numbers, objects, arrays, true, false, and null.

How a JSON Validator Helps

A validator attempts to parse the JSON and reports whether the input follows valid JSON syntax. This can be useful before sending data to an API or using a configuration file.

How to Validate JSON

1. Open the JSON Validator.
2. Paste your JSON.
3. Run the validation.
4. Review any reported syntax issue.
5. Correct the JSON and validate again.

Try the Free JSON Validator

Use the ToolNoveHub JSON Validator to check JSON syntax directly in your browser.