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CSV Cleaner & Deduper

Trim spaces, drop empty rows, remove duplicates by selected columns and export a clean CSV — entirely in your browser.

Tool inputs stay in your browser · optional AI search sends your query

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How to use it (step by step)

  1. 1Choose a CSV file (export Excel as CSV first). Everything is read in this browser.
  2. 2Pick the columns that define a duplicate, then tick trim/empty-row options.
  3. 3Press Clean CSV, review the preview, then download the cleaned file.

Words to know

CSV export
A simple spreadsheet file (values separated by commas) that apps like Excel, Google Sheets and Meta Business Suite can save and open.
Duplicate
An item that appears more than once. Removing duplicates keeps only one copy of each.

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