JSON Validator
Free online JSON validator. Validate JSON syntax with detailed error messages, line numbers, and data statistics.
What is JSON Validator?
A JSON validator checks whether your JSON data is syntactically correct according to the JSON specification. It identifies errors like missing commas, unmatched brackets, and invalid values, helping you debug malformed data.
How to Use This JSON Validator
1. Paste your JSON into the input area. 2. Click 'Validate JSON'. 3. See detailed error messages with line and column numbers. 4. View statistics for valid JSON (key count, depth, size).
Common Errors
Trailing commas, single quotes instead of double quotes, unquoted keys, missing closing brackets, and undefined/NaN values are the most common JSON validation errors.
Frequently Asked Questions
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