Remove Duplicate Lines

Remove duplicate and empty lines, trim spaces, sort lists alphabetically or numerically, strip HTML and add prefixes or numbering.

How to use Remove Duplicate Lines

1. Paste your list (one item per line).
2. Choose cleaning and sorting options.
3. Copy or download the cleaned list.

Frequently asked questions

Can it ignore uppercase/lowercase differences?

Yes. Turn on "Ignore case" to treat "Apple" and "apple" as duplicates.

Is the original order kept?

Yes, unless you choose a sort option.