Extract just the columns you need
Paste a CSV, tick the columns you want, and get them back as tab-separated values ready to drop into a spreadsheet or another tool. When the first row is a header, the column names are shown as labels so you can pick by name.
The parser is RFC 4180 aware, so it correctly handles quoted fields with embedded commas, line breaks, and escaped quotes. You can also change the delimiter for semicolon- or tab-separated files. Everything runs in your browser — nothing is uploaded.