A web tool to easily insert new columns into existing CSV files.
Encountered a problem? Please let me know.
How can I add a new column to my CSV file?
You can add a new column to your CSV file by pasting your CSV content into the input area, specifying the new column name and value, and copying the updated CSV from the output area.
What should I do if the copying function fails?
If the copying function fails, you can manually select the updated CSV content in the output area, right-click to copy, and paste it where needed.
Can I use this tool on mobile devices?
This tool is designed to be responsive and should work on most modern mobile devices, allowing you to insert columns into CSV files on the go.
What happens if my CSV has empty rows?
Empty rows will get the new column added, but they will remain otherwise unchanged. You may need to manually edit the CSV afterward to clean up any unnecessary blank rows.
Why does the tool not add a new column?
If the tool does not add a new column, make sure you have entered a CSV with proper comma separation, and that you have specified both a new column name and value.
Is my data secure when using this tool?
This tool works entirely within your browser and does not send your data over the internet, keeping it secure and private.