Turn structured JSON from an API or export into a spreadsheet-ready table without sending the payload to a server.
Convert JSON objects or arrays to CSV with nested-object flattening, delimiter controls, copy and download.
For an array of objects, Toolmera builds a header from the union of object keys so rows with missing fields still stay aligned.
Nested objects can be flattened into dotted column names such as address.city. Arrays remain represented as JSON text inside a cell.
Values containing the selected delimiter, quotes or line breaks are wrapped in quotes and embedded quotes are doubled.
Choose comma, semicolon or tab depending on the spreadsheet or import workflow that will consume the file.
Use structured object data such as an API response or export.
Select a delimiter and decide whether nested objects should become dotted columns.
Convert the data, then copy the table or download the CSV file.
Useful next steps in the same workflow.
Yes. A single object is treated as a one-row table.
Yes. Nested objects can become dotted columns such as user.name.
Yes. The result can be copied or downloaded as a CSV file.
No. Array values are serialized into the CSV cell as JSON text.