Remove Duplicate Lines
Cleaning a mailing list, deduplicating keywords, or tidying exported data? Paste your lines below and duplicates disappear while the original order is preserved. Turn on case-insensitive matching to treat “Apple” and “apple” as the same line.
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Frequently asked questions
- Is the original order kept?
- Yes. The first occurrence of every line is kept in place and later duplicates are removed — nothing is re-sorted.
- Can I ignore letter case when comparing?
- Yes. Enable case-insensitive matching and lines that differ only by capitalization are treated as duplicates. The first occurrence's original casing is kept.