Duplicate Line Remover
Remove duplicate lines from text. Preserve order with configurable options.
Also known as: remove duplicate lines online, deduplicate text, unique line filter
Input
Output
Paste text with duplicate lines on the left.
Ctrl+V to paste · Ctrl+Enter to convert
What is Duplicate Line Remover?
Duplicate Line Remover is a free, browser-based tool that lets you remove duplicate lines from text. Preserve order with configurable options. No signup is required, and no files are uploaded to any server — all processing happens locally in your browser using JavaScript. This tool is also commonly referred to as remove duplicate lines online, deduplicate text, unique line filter.
How it works
Upload or paste
Add your file or paste your content
Convert instantly
Processing happens in your browser
Copy or download
Get your result instantly
Frequently asked questions
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