Duplicate Line Remover

Remove duplicate lines from text instantly. Keep only the first occurrence of every line, free online.

Input lines

Unique lines

Dedupe options

Compare lines after trimming spaces and tabs Ignore uppercase and lowercase differences Remove empty lines from the result Keep a final newline when the original text has one When duplicates exist

Tool Introduction

Use this duplicate line remover to clean email lists, URLs, SKU exports, keyword batches, IDs, logs, CSV snippets, and copied spreadsheet columns. It keeps your line order while removing repeated entries.

You can compare values after trimming whitespace, ignore case differences, decide whether empty lines should stay, and choose whether the first or last matching line wins.