JSON to CSVConvert JSON arrays to CSV format with proper escaping and formatting.

The converter first scans all objects in the JSON array to build a complete set of unique keys, which become the CSV header row. This approach ensures that even if objects have different key sets, all data is preserved. Each value is processed through an escaping function that follows RFC 4180 rules: if a field contains a comma, double quote, or newline character, the entire field is wrapped in double quotes. Any existing double quotes within the field are escaped by doubling them (e.g., a single " becomes ""). The tool handles flat JSON objects natively. Nested objects and arrays are serialized as JSON strings in the CSV output. For deeply nested JSON, consider flattening the structure first using a JSON transformer. Null and undefined values are output as empty fields. Boolean and numeric values are converted to their string representations. The output uses standard comma delimiters and Unix-style line endings (\n) which are compatible with all major spreadsheet applications.