Yes. The first occurrence of each line is kept, and later duplicates are removed, so the remaining lines keep their original relative order.

UtilitiesReady to use

Duplicate Line Remover

Remove duplicate lines from a block of text while preserving the original order of first occurrences.

Guide

Interactive workspace

No account required

Duplicate Line Remover

Load from file

Ignore case when comparing Trim lines before comparing Remove empty lines Sort output A–Z

5 → 3 lines; 2 duplicate lines removed. That is a 40% reduction.

apple
banana
cherry

How to use it

Paste one entry per line.
Choose whether comparisons ignore case.
Read the removed count and copy the first occurrence of each remaining entry.

What is Duplicate Line Remover?

Remove duplicate lines from a block of text while preserving the original order of first occurrences.

How it works

SiteIndex compares each line against the lines already seen and keeps only the first occurrence, with an option to ignore case and trim whitespace before comparing.

Common uses

Clean up a mailing list or keyword list that has repeated entries.
Deduplicate a list of URLs before bulk-processing them.
Merge two lists and remove any lines that appear in both.

Limitations

Blank lines are dropped. Comparisons trim surrounding whitespace, but the retained line keeps its original spelling and whitespace.

Frequently asked questions

Does order matter?: Yes. The first occurrence of each line is kept, and later duplicates are removed, so the remaining lines keep their original relative order.