'CSV Column Extractor lets you keep only the columns you need from CSV data. It is useful for exports, reports, spreadsheets, dashboards, imports, data cleanup, and API preparation when you want to remove unnecessary fields and rebuild a smaller CSV quickly.', 'howto' => [ 'Paste your CSV data into the input area.', 'Enter the columns you want to keep by header name or column number.', 'Choose whether your CSV includes a header row.', 'Click Extract Columns.', 'Review the cleaned output, summary, and preview before copying or downloading the result.' ], 'why' => 'CSV Column Extractor helps reduce messy exports into a focused dataset without manual spreadsheet work. It is useful when preparing imports, sharing selected data, cleaning reports, or transforming CSV files for systems that only accept specific columns.', 'faq' => [ [ 'q' => 'What does CSV Column Extractor do?', 'a' => 'It keeps only the columns you choose and rebuilds the CSV output using those selected fields.' ], [ 'q' => 'Can I select columns by name?', 'a' => 'Yes. If your CSV includes a header row, you can select columns by header name.' ], [ 'q' => 'Can I select columns by number?', 'a' => 'Yes. You can also select columns using 1-based column numbers such as 1, 3, 5.' ], [ 'q' => 'Does this tool work in the browser only?', 'a' => 'Yes. The CSV parsing and extraction happen locally in your browser on the page.' ] ] ]; include_once $_SERVER['DOCUMENT_ROOT'] . '/inc/tools/related-tools-helper.php'; $relatedTools = getAutoRelatedTools($toolSlug, $toolCategory, 5); include_once $_SERVER['DOCUMENT_ROOT'] . "/inc/header.html"; ?>

Free Online Developer Tools

Inspect, validate, transform, and troubleshoot technical data quickly and clearly.
Developer Tools

CSV Column Extractor

Extract only the CSV columns you need by header name or column number and rebuild clean output instantly.

Extract selected CSV columns

Use commas to separate values. You can use header names, column numbers, or mix both when a header row exists.

Result

Status Ready
Input Rows 0
Output Rows 0
Input Columns 0
Selected Columns 0
Unmatched Selectors 0
Extraction Result
Waiting for CSV input
No matched columns yet
No preview yet