About Insert CSV columns
Add new columns to CSV data at specified positions.
- Input
- Delimited text. Select the actual delimiter, quoting and header options where available.
- Output
- The result is shown in the work area. Use the copy or download controls provided by this tool.
- Processing
- The current implementation computes this tool's results in your browser. No account is required.
- Limits and behavior
- The selected separators, units and options affect the result. Very large inputs can make the browser slow. This page describes the current implementation, not every possible input combination.
How to use Insert CSV columns
- Paste or import your input, or enter values in the available fields.
- Choose settings and check the automatically updated result.
- Copy or download the result using the available controls.
Questions about Insert CSV columns
What input does Insert CSV columns accept?
Delimited text. Select the actual delimiter, quoting and header options where available.
How do I save the result from Insert CSV columns?
The result is shown in the work area. Use the copy or download controls provided by this tool.
What limitations should I know about?
The selected separators, units and options affect the result. Very large inputs can make the browser slow. This page describes the current implementation, not every possible input combination.
Where does processing happen?
The current implementation computes this tool's results in your browser. No account is required.
Implementation notes reviewed: 2026-10-25