Remove Duplicate Lines
Instantly deduplicate any list or block of text
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Output
About Duplicate Line Remover
Delete duplicate lines from any list in one click — email lists, keyword exports, log files, CSV columns or to-do lists. Optionally ignore letter case or surrounding whitespace when comparing, so 'Apple' and 'apple ' count as the same entry.
How to use the duplicate line remover
- Paste your list, one item per line.
- Pick matching options: case-sensitive or not, trim whitespace or not.
- Copy the deduplicated list.
Frequently asked questions
Does it keep the original order of my list?
Yes — the first occurrence of each line is kept in place and later repeats are removed.
Can it treat 'Apple' and 'apple' as duplicates?
Yes, enable case-insensitive matching and capitalization differences are ignored when comparing lines.
How large a list can it handle?
Tens of thousands of lines are processed instantly because everything runs locally in your browser — no upload limits.