Remove Duplicate Lines
Paste a list with duplicate lines — get a clean, deduplicated list back, keeping the original order.
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How to use
- Paste your list (one item per line).
- Choose options, then click "Remove Duplicates".
- Copy the clean list or download it.
Frequently Asked Questions
Does it keep the original order?
Yes. The first occurrence of each line stays in its original position; only later duplicates are removed. Nothing is sorted.
How many lines can it handle?
Tens of thousands of lines process instantly in your browser. There is no hard limit.
Does it treat "Apple" and "apple" as duplicates?
Only if you enable "Case-insensitive matching". By default, comparison is case-sensitive.