Check whether your JSON is syntactically valid, with an approximate error location if it isn't.
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How to Use the JSON Validator
Paste your JSON into the box.
Click "Validate".
See whether it's valid, or an error message with an approximate line/column if it isn't.
Frequently Asked Questions
It attempts to parse your text using the browser's built-in JSON parser. If parsing succeeds, your JSON is syntactically valid; if it fails, the parser's error message (including position) is shown.
When the browser's error message includes a character position, the tool converts that position into an approximate line and column number to help you locate the problem faster.
No, this only checks that your text is syntactically valid JSON (correct brackets, quotes, commas, etc.) — it does not validate against a JSON Schema or check specific field types/values.
Yes, it's completely free and requires no sign-up.