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Duplicate Line Remover
Paste a list, remove duplicates, sort, and clean up in one click.
Frequently Asked Questions
What is this tool useful for?▼
Common use cases: (1) Cleaning up exported spreadsheet data with duplicate rows. (2) Deduplicating email lists or contact lists. (3) Removing repeated entries from log files. (4) Cleaning up keyword lists for SEO research. (5) Deduplicating inventory or product lists. (6) Normalizing data before importing into a database.
What does case-insensitive mode do?▼
In case-insensitive mode, 'Apple', 'APPLE', and 'apple' are treated as the same line and only one copy is kept. The first occurrence is preserved. Without this option, case-sensitive mode keeps 'Apple' and 'apple' as separate distinct lines since they contain different characters.
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