Paste your CSV into a browser-based CSV column extractor, pick the column by its header name or number, and it pulls just that column out as a clean list. It uses a real parser that respects quoted fields and commas, and because it runs on your device the data is never uploaded.
A lot of small tasks come down to needing just one column: every email in a list, every product id, every price, without the surrounding columns. Rather than opening a spreadsheet, deleting the other columns and exporting again, a column extractor lets you name the column you want and hands you that single column as a list you can paste straight into a query, a script or another tool.
The one thing that makes this trickier than it looks is quoting: a CSV field can legally contain a comma or a line break when it is wrapped in quotes, and a plain split on commas would tear those values apart and grab the wrong column. A tool built on a proper CSV parser walks the rows correctly and returns exactly the column you asked for. All of it runs in your browser, so the source data never leaves your machine.
Yes. You can select the column by its header name or by its number, whichever is easier.
Yes. A real parser respects quoted fields, so a value containing a comma stays in the correct column.
No. The extraction runs entirely in your browser.