CSV 交換列
Swap two columns in CSV data by specifying their positions. Runs entirely in your browser.
常見問題
How does column swapping work?
Specify two column positions (1-based) and they will be swapped in every row.
What if a column position is out of range?
Rows that don't have the specified columns will remain unchanged.
Is my data safe?
Yes. All processing happens locally in your browser.
