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Duplicate Line Remover — Case-Sensitive Option, Preserves Order

Paste text to remove duplicate lines instantly, with a toggle for case-sensitive comparison, keeping the first occurrence of each unique line in its original order — useful for cleaning up a list, log file, or export with repeated entries.

How to use Duplicate Line Remover

1. Paste your text.
2. Toggle case-sensitivity if needed.
3. Copy the deduplicated result.

Frequently asked questions

Does it preserve the original order?

Yes — the first occurrence of each unique line is kept in its original position, rather than sorting the result.

What does the case-sensitive toggle change?

With it on, "Apple" and "apple" are treated as different lines; with it off, they are treated as duplicates and only the first is kept.

Is my text uploaded anywhere?

No. Deduplication runs entirely in your browser.

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Also searched for: remove duplicate lines online · deduplicate text lines tool · delete repeated lines from list

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