Duplicate Line Remover
Paste a list or block of text and strip out repeated lines, keeping the first occurrence of each.
How to use this tool
- Paste a list or any multi-line text into the input box.
- Choose your comparison options — case sensitivity, whitespace trimming, and optional sorting.
- Click Remove Duplicates and copy the cleaned-up result.
Frequently asked questions
The first occurrence of each unique line is kept; later repeats are removed.
Blank lines are treated like any other line — if there are multiple blank lines, only the first is kept unless you disable trimming.