Remove Duplicate Lines — Free Online Tool

Deduplicate repeated rows in lists, exports, and pasted datasets so each distinct line remains only once.

This private tool runs locally in your browser. Your text is never uploaded or sent to a server.

How to use Remove Duplicate Lines

Paste one item per line
Choose the matching behavior
Copy the unique lines

Example

“red blue red” becomes “red blue”.

Useful tips

Decide whether case should matter
Trim lines first when whitespace causes false differences

JavaScript enables the interactive tool above.

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