Remove Duplicate Lines
Delete repeated lines from any list, instantly and in order.
Your deduplicated list will appear here.
Paste a list and remove repeated lines while keeping the original order. Great for cleaning email lists, keywords, CSV columns or any line-separated data. Options let you ignore case and trim surrounding spaces.
How to use the Remove Duplicate Lines
- Paste your line-separated list into the box.
- Toggle 'ignore case' or 'trim whitespace' if needed.
- The deduplicated list appears instantly — copy it out.
Frequently asked questions
Does it keep the original order of lines?
Yes. The first occurrence of each line is kept in its original position; later duplicates are removed.
Can it ignore upper/lowercase differences?
Enable 'ignore case' and lines like 'Apple' and 'apple' will be treated as duplicates.