JSON Validator
Check whether text is valid JSON and pinpoint the first syntax error.
Runs locally · Nothing uploaded
JSON to validate
Validation result
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About JSON Validator
Validates your input against the JSON specification and reports the position and cause of the first syntax error — a trailing comma, an unquoted key, a stray character. Valid documents are confirmed with a summary of the parsed structure. Useful before committing config files or debugging API payloads.
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