Use this tool

Prepare the input and run the tool

Paste CSV text and enter the exact headers to keep. Result: Copy or download the reduced CSV.

CSV input

Columns to keep

Ready.

Cleaned CSV appears here.

Data handling: This page processes only pasted text and form inputs in this browser session.

Readiness details

What to check before using the result

Tool guide

Use this when a CSV has extra columns that should not be shared or imported. Enter the headers to keep and download the trimmed file.

Paste a CSV, keep only selected columns, and download the smaller CSV.

Column names must match the CSV header exactly, including spaces and punctuation.

Copy header names from the preview or rename the source headers before keeping columns.

The keep-list may include broad columns such as Notes or Tags that contain private data.

Review the preview and remove any column that should not be shared before downloading.

CSV cells with commas or line breaks need proper quoting after columns are removed.

Open the output in a CSV-aware app and avoid editing the downloaded file in a plain text tool unless you preserve quotes.

How do I choose columns?

Enter the exact header names to keep, separated by commas.

Are quoted CSV cells supported?

Yes. The shared CSV parser handles quoted commas and line breaks.