Frequently Asked Questions
These answers cover the most common questions about using the free online Excel duplicate remover, including privacy, file formats, duplicate rules, and downloads.
Is this Excel duplicate remover free?
Yes. The tool is free to use online and does not require signup, an email address, or a paid account.
Are my Excel files uploaded to a server?
No. Files are processed in your browser. The spreadsheet stays on your computer during duplicate detection and download.
Which file formats are supported?
The tool supports .xlsx, .xls, and .csv files, which covers the most common Excel and spreadsheet export formats.
Can I remove duplicates based on one column?
Yes. Select only the column you want to check, such as email address, product SKU, order ID, or phone number.
Can I remove duplicates based on multiple columns?
Yes. Select multiple columns when a row should count as a duplicate only if those fields match together.
Does the tool keep the first duplicate row or the last duplicate row?
You can choose either option. Keep first is useful for original records, while keep last is useful when later rows contain newer information.
Learn More About Cleaning Excel Files
Start from the step-by-step tutorial, or go back to the online Excel duplicate remover to clean a file now.