Remove Duplicate Lines

Paste a list and keep only the first occurrence of each line. Optional case-insensitive matching and whitespace trim.

How to use Remove Duplicate Lines

1. Paste your list (one item per line).
2. Toggle case-insensitive or trim if you need them.
3. Copy the deduplicated result.

What is Remove Duplicate Lines?

FAQ

Is the original order preserved?

Yes. Lines appear in the order they were first seen.

Does it handle different capitalizations?

Enable 'Case-insensitive' to treat 'Apple' and 'apple' as the same.

Related tools

• Sort Lines
• Remove Line Breaks
• Word Counter