Remove Duplicate Lines
Strip repeated lines from a list, with optional case and whitespace matching.
Runs in your browser using Set — nothing is uploaded
How to use it
- Paste your list, one item per line.
- Choose whether case and surrounding spaces should count as a difference.
- The cleaned list and the number of duplicates removed appear immediately.
Questions
Is the original order kept?
Yes. The first occurrence of each line stays exactly where it was; later repeats are removed. Use the Sort Lines tool if you also want it ordered.