CSV Column Selector and Remover
Keeps or drops named columns, returning them in the order you listed.
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What you paste or load is processed by this page and is not uploaded to a server. Nothing is stored unless you use a control that says it stores something, and you can clear anything this site has kept from the privacy page.
How to use this tool
- Paste the CSV.
- List the column names you care about, separated by commas.
- Choose whether to keep only those columns or drop them.
- Apply the selection and download the narrower file.
What csv column selector does
Extracts arrive wider than anyone needs. Cutting them down before sharing or loading reduces the file, removes fields nobody should be looking at, and makes the remaining data easier to read. Name the columns you want and they come back in exactly that order, which doubles as a way to reorder a file.
Switching to exclude mode inverts the operation: name the columns to remove and everything else is preserved in its original order. If you name a column that does not exist, the tool stops and lists the columns the file actually has, rather than quietly returning a narrower file than you expected.
Frequently asked questions
Yes, in keep mode. Columns come back in the order you list them, so this doubles as a way to reorder a file.
The tool stops and lists the column names the file actually has, rather than quietly returning fewer columns than you asked for.
It removes the columns you name, which helps, but it cannot tell you which columns are sensitive. Review the remaining columns yourself before sharing anything.