WHAT IS A DUPLICATE LINE REMOVER?

A Duplicate Line Remover removes repeated lines from a list and keeps only unique entries. It's useful for cleaning up keyword lists, email lists, tag lists, or any text data with repeated items.

DOES IT PRESERVE LINE ORDER?

Yes. The first occurrence of each line is kept in its original position. Subsequent duplicates are removed.

IS MY TEXT UPLOADED TO A SERVER?

No. All processing happens locally in your browser using JavaScript. Your text is never sent anywhere.

CAN I IGNORE CASE DIFFERENCES?

Yes. Enable the "Ignore Case" option. With it on, "Apple", "apple", and "APPLE" are treated as the same line and only the first occurrence is kept.