Duplicate Line Remover strips repeated lines from your text while preserving the order of first occurrences. Toggle case-sensitive matching and automatic whitespace trimming. Stats show how many lines were removed and how many unique lines remain.
It keeps the first occurrence of each unique line in its original position and removes all subsequent duplicates.
Yes. Enable 'Trim whitespace' to normalize leading and trailing spaces before comparison, so lines differing only in whitespace are treated as duplicates.
When enabled, 'Apple' and 'apple' are treated as different lines. When disabled, they're treated as duplicates regardless of capitalization.
Yes — multiple blank lines are treated as duplicates of each other, and only the first blank line (if any) is kept.
Yes — unlike sorting tools, this preserves the original order of first-occurrence lines, only removing the repeats.
Yes — the tool displays a count of removed lines and the number of unique lines remaining after deduplication.
Cleaning up email lists, merged CSV exports, log files, or combined keyword lists where the same entry appears multiple times.
