Paste any list. Duplicates disappear instantly.
Remove Duplicate Lines is ideal for cleaning keyword lists, email lists, exported data, or any text with repeated entries. Everything runs locally — nothing is uploaded.
Treats "Apple" and "apple" as identical entries. The first occurrence's original casing is preserved in the output.
After deduplication, all lines are sorted alphabetically for easy scanning and comparison.
Strips leading and trailing whitespace from each line before comparing — prevents "apple " and "apple" from being treated as different.