Column Extractor

How to use the column extractor

1. Paste your CSV.
2. Click the columns to keep, in the order you want them.
3. Copy or download the result.

About this tool

Click the columns you want. They are kept in the order you click them, so this reorders as well as filters — selecting the third column and then the first produces a file with them in that order.

The common reason to do this is sharing. An export often carries far more than the recipient needs, and internal identifiers, cost prices or personal fields frequently travel along with it unnoticed. Cutting to the columns that are actually required is the simplest privacy control there is, and it happens here without the file leaving your machine — which would rather defeat the purpose otherwise.

The column summary shows the inferred type and how many values are filled, which makes it easier to spot the column you actually meant when several have similar names.

Parsing handles quoted fields properly, so a comma, quote or line break inside a value does not split it. That is the difference between this and splitting on commas, and it is why exports containing addresses or free-text notes so often arrive mangled.

Everything runs in the page. Spreadsheets are usually the most sensitive files anyone handles — customer lists, payroll, financial records — so a tool that works on them without uploading them is doing the one thing that matters most here.

Common uses

• Cutting an export down before sharing it externally.
• Reordering columns for a system that expects a fixed layout.
• Extracting a single column as a list.

Frequently asked questions

Can I reorder columns as well?

Yes. Columns are kept in the order you click them, so clicking the third then the first gives you that order.

What if I select nothing?

Every column is kept, so the tool is never destructive by accident.

Is my file uploaded?

No — which matters here, since the usual reason to cut columns is that some of them should not be shared.