Remove duplicate CSV rows
Delete repeated rows from a CSV comparing all or some columns.
Home › Free online developer tools
Frequently asked questions
Can I dedupe by a single column?
Yes. Click the column (or several) under “Compare by” and the first row for each repeated value is kept. With nothing selected, whole rows are compared.
Does it detect the delimiter?
Yes: comma, semicolon, tab or pipe, and it handles quoted fields with line breaks inside.
Is Remove duplicate CSV rows free to use on Toolkoa?
Yes, the Remove duplicate CSV rows tool is 100% free, unlimited and requires no sign up or installation.
Are my files sent to any server when using Remove duplicate CSV rows?
No. Every operation on Toolkoa is processed privately and locally, directly in your own browser.
Do I need to install anything to use Remove duplicate CSV rows?
Nothing to install. Remove duplicate CSV rows runs in any modern desktop or mobile browser, and once the page has loaded you can keep using it without relying on the connection.