Remove Duplicate Lines
Free online duplicate line remover. Paste any list or text and remove duplicate lines instantly. Case-sensitive option and sort included.
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Whether "Apple" and "apple" count as the same entry or two different ones depends entirely on the data, a list of email addresses probably should treat them as identical, while a list of exact product codes probably shouldn't, and a duplicate-line tool that can't make that distinction either strips lines it shouldn't or keeps ones it should have merged. This tool removes duplicate lines from text with an explicit case-sensitivity toggle and an optional sort, rather than assuming one fixed behavior for every kind of list.
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Useful for deduplicating a list of email addresses where case shouldn't matter, keeping "Apple" and "apple" as separate entries when case genuinely does matter for the data, or removing duplicates and sorting the result alphabetically in the same pass instead of two separate steps.
Key features
- Clean interface
- Fast processing
- No signup required
- Works offline