CSV Column Selector

How to use this tool

The first row is a header. Quoted delimiters, embedded newlines and escaped double quotes are supported. Rows must have consistent column counts. Exports prefix spreadsheet formula-leading cells with an apostrophe for safer opening in spreadsheet apps. Header names must be unique. Names are matched exactly after trimming the requested column list.

Your inputs and files are processed in this browser. This tool does not send them to a server or save an input history. Copy or download any results you want to keep.