Is the removal case-sensitive?

By default, yes. "Apple" and "apple" are treated as two different lines.

Does this tool reorganize the list?

No. It removes later duplicates and keeps the original order of first occurrences.

Are my lists uploaded to a server?

No. Filtering happens in your browser for this tool.

Remove Duplicate Lines

Clean up messy data with the Remove Duplicate Lines tool. Whether you're managing an email list, consolidating survey responses, or deduplicating records, it scans your text and removes exact duplicate lines. Your data is processed on your device so nothing is sent to a server.

Free · No limits · Runs in your browser

How to use

1Paste your list containing duplicates into the text box.
2Click the "Remove Duplicates" button.
3Copy your cleaned, unique list to your clipboard.

Frequently asked questions

Is the removal case-sensitive?: By default, yes. "Apple" and "apple" are treated as two different lines.
Does this tool reorganize the list?: No. It removes later duplicates and keeps the original order of first occurrences.
Are my lists uploaded to a server?: No. Filtering happens in your browser for this tool.