Duplicate line remover

What is Duplicate line remover?

Deduplicating a list — of emails, URLs, log lines, anything line-based — is a constant small chore that's easy to get wrong by hand, especially with inconsistent capitalization or trailing whitespace.

How to use it

Paste a list, one item per line. Duplicates are removed while preserving the original order of first appearance, with options for case-sensitivity and whitespace trimming.

Example