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 by default, or use paid advanced options to join primitive array values with your chosen separator.
No source-data upload
Nested data is processed on your device, which is useful for private operational and customer exports.