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Duplicate remover

Find and remove identical rows from CSV or Excel. Free, private and browser-based.

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Free workspace supports five open files. Each file can be up to 100 MB.

About the Duplicate remover

Find and remove rows that appear more than once in a spreadsheet or CSV file. Mailing lists, contact exports and order reports often contain the same row twice; this tool keeps one copy of each. Works with CSV, XLS and XLSX files.

How to use it

  1. Open the CSV or Excel file.
  2. Press Remove duplicates.
  3. Download the result.

Tip: Rows only count as duplicates when every cell matches. Run the CSV cleaner first to remove stray spaces that make identical rows look different.

Questions

What counts as a duplicate?

A row whose cells are all identical to an earlier row. The first copy is kept.

Can I remove duplicates by one column only?

For more control (one column, ignoring case or spaces, keeping the last copy), use CSV Studio's Remove duplicates.

Does it work with Excel files?

Yes, XLS and XLSX as well as CSV.

Is the order of rows kept?

Yes. The remaining rows stay in their original order.

Is my file uploaded?

No. The file is opened and processed in your browser; it never leaves your device and nothing is stored on a server.