Demo: preview CSV rows before importing
CSV previews are useful when you need to inspect headers, column order, and sample values before loading data into a database, spreadsheet, or visualization.
- Check whether the first row is really a header.
- Look for commas inside quoted fields.
- Scan empty cells before mapping columns to required fields.
id,email,plan
1,ada@example.com,pro
2,lin@example.com,free