See the structure first
Preview detected fields such as customer.name and address.city before creating a CSV.
- Automatic field discovery
- Selective columns
- Spreadsheet-safe cells
Nested JSON converter
Flatten nested JSON into clean CSV columns
Turn nested objects into selectable dot-path columns, preview the result, and keep only the fields your spreadsheet needs.
Control arrays
Keep arrays as JSON, join primitive values, or choose a nested array to repeat each item as its own CSV row while preserving the parent record details.
No source-data upload
Nested data is processed on your device, which is useful for private operational and customer exports.