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Delete repeated lines and keep only the first occurrence of each.
About this tool
Delete repeated lines and keep only the first occurrence of each.
Remove Duplicate Lines is a free text tool that runs entirely in your browser — nothing to install, no account to create, and your data never leaves your device. Open the page, add your input, and get a clean, copy-ready result in seconds.
Open Remove Duplicate Lines on AltFTool — it loads instantly in your browser.
Paste or type the text you're working with.
Choose how it should be transformed or analyzed.
Copy the finished text into your document or post.
Clean up, transform, or analyze your writing without leaving the browser.
Get output shaped precisely for your document, post, or platform requirements.
Copy the finished text straight into emails, docs, code, or social posts.
Yes — Remove Duplicate Lines is completely free on AltFTool, with no signup, no trial limits, and no hidden costs.
Yes. Remove Duplicate Lines runs in your browser, so what you enter or upload stays on your device instead of being sent to a server.
Delete repeated lines and keep only the first occurrence of each. It's built for quick, everyday text tasks with results you can copy or download straight away.
Yes — Remove Duplicate Lines works in any modern browser, on desktop, tablet, and mobile, with the same features everywhere.