About Commafield

Clean messy CSV files and compare two spreadsheets in your browser. Remove duplicates, empty rows and stray spaces, see every change marked in the table, and download the result. Free, no upload.

How it works

Commafield runs in your web browser. What you enter is processed on your device. The site has no account system or database for your entries. Only your option choices are remembered in this browser, never file contents.

Who makes it

Commafield is part of Toolwoven, a small independent collection of free browser tools. Each tool focuses on one practical task and can be used without signing up.

Read the privacy notice for details on storage, cookies and analytics.

Last updated: 19 October 2026

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