Remove Duplicate Rows

Find and remove exact duplicate lines within the CSV. 100% private—your data stays in your browser.

No uploadsNo signupInstant results
1

Upload List

Drop your file with duplicates.

2

Deduplicate

We identify and remove repeated rows.

3

Download Unique List

Get a clean file with single instances.

Click to upload or drag & drop

Supported files: CSV, TXT, JSON (Max 20MB)

Drop your file here

or click to browse

CSV with suspected duplicates.

Max 20MB 100% Private

What This Tool Does

This tool scans your dataset for repeated rows. You can choose to dedupe based on exact matches or duplicates in a specific column.

How It Works

1Upload your list.
2Select 'Exact Match' or specific columns to check.
3The tool keeps the first instance and discards the rest.
4Download the unique dataset.

Input Format

A CSV with potential duplicates.

Output Format

A CSV with unique rows only.

When to Use This Tool

  • Cleaning up mailing lists.
  • Merging two files created overlapping data.
  • Ensuring primary keys are unique.