Duplicate Line Remover

By default, most duplicate line removers treat differently capitalized lines as distinct unless there's a specific case-insensitive option enabled. Check whether the tool offers that setting if your list has inconsistent capitalization you want treated as the same.

Yes, typically the first occurrence of each unique line stays in its original position, and only the later repeats get removed, so your list's overall order is preserved rather than reshuffled.

This depends on whether the tool trims whitespace before comparing. A line with a trailing space might be treated as different from an otherwise identical line without one, so it's worth checking your list for stray spaces if duplicates aren't being caught as expected.

Yes, as long as each entry is on its own line, the tool works the same way regardless of what the list contains, emails, usernames, keywords or anything else organized one item per line.

No practical limit, you can paste in anything from a short list to thousands of lines, since the deduplication runs directly in your browser rather than on a server.

No, it only removes duplicates and keeps the remaining lines in their original order. If you need the list sorted as well, you'd want a separate text sorting tool for that step.