Remove Duplicate Lines
Turn a messy list into clean, unique lines while keeping the order you need.
Your privacy is safe, this tool runs entirely in your browser. Nothing you enter is uploaded to or stored on our servers.
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How to use Remove Duplicate Lines
- 1Paste a list or multiline text.
- 2Choose how spaces, letter case and empty lines should be handled.
- 3Select an optional sort order.
- 4Copy or download the cleaned result.
Clean lists without changing their meaning
This duplicate line remover is useful for keyword lists, email exports, IDs, URLs, inventory data and pasted spreadsheet columns. It reports exactly how many repeated and blank lines were removed.
Case-sensitive mode keeps values such as SKU-a and SKU-A separate. Numeric sorting understands numbers naturally instead of placing 10 before 2.
Frequently asked questions
Does it keep the original order?
Yes. With sorting set to Keep original order, the first occurrence stays in place and later duplicates are removed.
Can matching ignore uppercase and lowercase?
Yes. Turn off case-sensitive matching to treat Apple and apple as duplicates while preserving the first version.
Can it remove blank lines?
Yes. The empty-line option removes lines that contain no visible text.
Is the text uploaded?
No. Cleaning and sorting happen entirely in your browser.