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CSV Column Formatter

Upload a CSV and build a standardized export by selecting source columns, renaming headers, and setting defaults. Includes a mapping summary output for auditing.

Free
1Upload 2Configure 3Process 4Download
Upload CSV

Reorder, rename, and standardize your output columns into a consistent export layout.

Drop a CSV file here or click to browse
.csv/.txt/.tsv  -  Queued for larger files  -  Max 50MB site setting
Define Output Columns

Each row below becomes one output column. Choose a source column (or leave as None and use a default value).

Output Column Name
Source Column
Default Value
Tip: If your input has more than 12 columns, set the mapping roughly here first. We can extend this UI to pull real headers in the next iteration.
Options

Outputs include a formatted CSV plus a mapping summary file.

Tool information

What it does

Reorder and rename columns into a clean export layout

How it works

  1. Upload a CSV
  2. Select, rename, and order output columns
  3. Set any required defaults
  4. Download the formatted export

Output / privacy

Builds a formatted CSV plus a mapping summary file for auditing.

Uploads and generated files are stored privately and retained for the configured retention period.

FAQ

Can I rename and reorder columns?
Yes. Select source columns, set output names, and arrange the export order.
Can I add default values?
Yes. The mapping controls support defaults for output fields where configured.
Does it change the uploaded file?
No. It creates a separate formatted CSV and mapping summary.