Rename CSV columns with live preview
Rename CSV column headers in bulk. Type new names, apply find-and-replace patterns across headers, or use presets like camelCase and snake_case conversion. The data rows stay untouched.
Initializing in your browser…
A source export uses cryptic headers like `col_a` and your pipeline expects `customer_id`.
Mapping
col_a → customer_id · dt → signup_date · amt → total
Output
Header row rewritten; all data rows untouched
Only the header is rewritten via an explicit map, so downstream code that depends on exact column names works without you touching a single data cell. Bulk-renaming here is safer than a find-replace that might also hit values.
Rename CSV column headers in bulk. Type new names, apply find-and-replace patterns across headers, or use presets like camelCase and snake_case conversion. The data rows stay untouched.
Rows and columns are parsed and transformed in memory in your browser. No record ever reaches a server.