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Remove Duplicate CSV Rows
Find duplicate rows in a CSV and produce a cleaner dataset before importing, analyzing, or sharing it.
Problem
A CSV contains repeated rows after exports, merges, scraping, or manual copy-paste work.
What to do
Duplicates distort counts, charts, and joins. Remove exact duplicates first, then decide whether similar records need manual review.
- 1Paste or upload the CSV.
- 2Review duplicate counts and affected rows.
- 3Export the deduplicated CSV for the next step.
Use the browser tool
Remove Duplicate Rows is a free, browser-based tool that helps you tidy up and standardize messy datasets. Strip duplicate rows from CSV or JSON. It's built for speed and privacy: Everything runs locally in your browser — your data is never uploaded to a server. No sign-up, no installs, and no daily limits.
People also ask
- How do I use Remove Duplicate Rows?
- Paste or drop your data into the workspace, adjust the options to fit your data, then copy or download the result. Strip duplicate rows from CSV or JSON.
- Is my data uploaded or stored anywhere?
- No. Everything runs locally in your browser — your data is never uploaded to a server. Nothing is sent to a server, so it's safe to use with private or sensitive data.
- Is Remove Duplicate Rows free?
- Yes — it's completely free with no account, no sign-up, no watermark, and no daily usage limits.