Remove Duplicate Lines.
Remove duplicate lines from text while preserving order. Supports case-sensitive and case-insensitive matching. Free online tool.
Ad slot: horizontal
How to use
Paste your text (one item per line) into the input area.
Toggle "Case-sensitive" if needed.
Duplicate lines are removed instantly, preserving the original order of unique lines.
Frequently Asked Questions
Does it preserve the order of lines?
Yes. The first occurrence of each line is kept and duplicates are removed. The overall order is not changed.
What does case-sensitive mode do?
With case-sensitive on (default), "Apple" and "apple" are treated as different lines. With it off, they are treated as duplicates and only the first is kept.
Ad slot: horizontal