Duplicate Lines Remover

What is the Duplicate Lines Remover?

The Duplicate Lines Remover is a free online tool that quickly removes repeated lines from your text. Simply paste your text, and the tool will automatically detect and eliminate duplicate lines while preserving the original order of your content.

Features

• Instant Processing – Results appear in real-time as you type or paste
• Case Sensitivity Options – Choose between case-sensitive or case-insensitive duplicate detection
• Order Preservation – Keeps the first occurrence of each line, maintaining your content’s structure
• File Upload Support – Upload text files directly for processing
• One-Click Copy & Download – Easily copy results or download as a text file

How to Use

1. Paste your text into the input field or upload a text file
2. Toggle “Case sensitive” option based on your needs
3. View the deduplicated result instantly in the output field
4. Copy or download the cleaned text

Use Cases

• Clean up email lists by removing duplicate addresses
• Deduplicate data exports from spreadsheets or databases
• Remove repeated entries from log files
• Clean up copied text with accidental duplicates
• Prepare unique keyword lists for SEO