Duplicate Line Remover

Remove duplicate lines from text and keep only unique entries

Input Lines
Unique Lines
Apple Banana Cherry Date Elderberry Fig Grape
10 original → 7 unique

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Why Remove Duplicates?

Duplicate lines often appear in lists, data exports, and text files. Removing them cleans up your data, reduces file size, and makes analysis easier. Perfect for preparing unique lists for databases, removing repeated entries from CSV files, or cleaning up inventory lists.

Frequently Asked Questions

What's the difference between case sensitive and insensitive?
Case sensitive treats 'Apple' and 'apple' as different. Case insensitive treats them as the same and keeps only one.
Does it preserve line order?
Yes, the first occurrence of each line is kept in its original position. Duplicates are removed, but order is preserved.
What does "Trim spaces first" do?
It removes leading and trailing spaces before comparing lines, so 'Apple' and 'Apple ' are treated as duplicates.