Duplicate Line Remover & Sorter

How to use this tool

1. Paste your lines, one per line.
2. Tick the sort box only if you want alphabetical order — otherwise the original order is kept.
3. Press Remove duplicates and read the counts: before, after and removed.

Worked example

With the sample (apple, banana, apple, cherry, banana), the result is apple, banana, cherry: 5 lines before, 3 after, 2 removed. The first occurrence of each line is the one kept, so if the same line appears with different surrounding content on different lines, only the exact line text matters.

What this tool does not do / Limits

Comparison is exact and case-sensitive: “Apple” and “apple” are different lines, and a line with a trailing space is different from the same line without one. Blank lines count as lines too, so a list with empty lines will keep one blank line. This tool does not edit inside a line — it only removes whole duplicate lines.

Frequently asked questions