Free online Json Validator validate data or syntax easily.
The free online Json Validator will ensure your data or code meets required standards.
How to Validate JSON Data
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Paste your JSON code or data structure into the text area provided.
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Click the "Validate JSON" button.
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The tool will parse the input and check for syntax errors according to the JSON specification.
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A success message will appear if the JSON is valid and well-formed.
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If errors are found, an error message will indicate the type and location of the syntax issue (e.g., missing comma, incorrect bracket).
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Use the feedback to correct your JSON structure and re-validate.
Common JSON Errors
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Missing commas between elements in objects or arrays.
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Trailing commas after the last element.
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Using single quotes instead of double quotes for keys and string values.
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Incorrectly nested brackets or braces.
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Unescaped special characters within strings.