Duplicate Line Remover
Remove repeated lines from a pasted list while preserving the order of the first occurrence. Optional trimming and case-insensitive comparison cover common cleanup needs.
Runs locally in your browser
1 duplicate line removed. Original order is preserved.
What is the Duplicate Line Remover?
Remove repeated lines from a pasted list while preserving the order of the first occurrence. Optional trimming and case-insensitive comparison cover common cleanup needs.
How to use it
- 1Paste one item per line.
- 2Choose whether spaces and letter case affect matching.
- 3Copy the unique-line result.
How it works
Each line is normalized according to the selected options, then compared against a Set. Only the first occurrence of each comparison key is retained.
A repeated list
Apple, Banana, Apple on three lines becomes Apple, Banana in that order.
Limitations & notes
- Blank lines are treated as values, so one blank line can remain.
- Case-insensitive comparison follows browser locale casing, not linguistic equivalence.
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