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Bethemesh
Data & spreadsheets

CSV Column Selector

Choose the useful columns from a CSV file, remove the others, and get a table containing only the data you need.

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  • Works offline
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Names or numbers separated by commas, in the desired order

Why use this tool?

Keep, remove, and reorder CSV columns using a list of column names or numbers.

100% local and secure

Your data stays on your device and is never sent to our servers.

Smart processing

Clean, structure, and transform your data with rules tailored to the format being processed.

Supported formats

CSV, XLSX, and other tabular formats depending on each tool’s capabilities.

Save time

Get a clean, ready-to-use result in seconds without installing software or configuring a complex workflow.

Fonctionnement

How does this tool work?

The tool converts each entered name or number into a column index and rebuilds every row in the requested order. Unselected columns are removed, while missing cells remain empty so the generated output keeps a valid CSV structure.

Use cases

Reduce an export

Remove unnecessary columns before sharing or importing the file.

Reorder a dataset

Place important fields in the sequence expected by another application.

Create a dedicated view

Produce a focused column subset for a team or specific workflow.

Guide

How to use this tool

  1. 1

    Add the data

    Paste the CSV or provide the information required by the tool.

  2. 2

    Configure processing

    Choose the columns, rules, or options that match your objective.

  3. 3

    Review the result

    Check the report, then copy or download the generated data.

Tips and best practices

  • Keep a copy of the source file before applying an important transformation.
  • Check the delimiter and header-row setting before running the operation.
  • All processing stays in your browser and no CSV file is uploaded.

Frequently asked questions

Are my CSV data uploaded?

No. Parsing, comparisons, and transformations are executed locally in your browser.

Are quoted fields supported?

Yes. The CSV engine supports delimiters inside quoted fields and multiline quoted content.

Can I download the result?

Yes. When a new CSV is produced, it can be copied or downloaded directly from the page.

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