Remove Duplicate Lines

Paste a list, drop the repeats — duplicates are removed while your original order is preserved.

Your list (one item per line)

Ignore case when comparing

Trim whitespace before comparing

Deduplicated

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How it works

The tool walks through your lines top to bottom and keeps the first occurrence of each unique row, so the original order never changes. With ignore-case on, “Apple” and “apple” count as the same line; with trim on, leading and trailing spaces are ignored during comparison — though your kept lines are never modified. The stats line tells you exactly how many duplicates were removed, which is handy for cleaning email lists or keyword sets. Everything runs locally in your browser, so private lists stay private.