Remove Duplicate Lines Online

Paste repeated lines and keep one clean copy of each item. Use case-insensitive matching, trimming, empty-line removal, and optional sorting.

Clean repeated lines fast

This duplicate line remover is useful for email lists, URL exports, keyword research, spreadsheet columns, logs, and any plain-text list where repeated rows make the data harder to use.

Example

apple
banana
apple
cherry
banana
apple
banana
cherry

FAQ

Does it preserve line order?

Yes. Preserve mode keeps the first occurrence in the original order unless you choose a sort mode.

Can I ignore capitalization?

Yes. Ignore case treats Apple, apple, and APPLE as the same value.

Can blank lines be removed too?

Yes. Turn on Remove empty lines to drop blank or whitespace-only lines.