Line deduplicator
Remove duplicate lines, optionally ignoring case or trimming whitespace.
How to use
Line deduplicator lets you remove duplicate lines, optionally ignoring case or trimming whitespace. Paste your text and the result appears immediately, ready to copy back out.
All processing happens in your browser, so your text is never sent anywhere. It's completely free, with no sign-up, no watermarks and no limits on how often you use it.
Examples
Drop in a paragraph and the tool processes it line by line, updating as you edit.
Once line deduplicator shows your output, use the copy or download button to grab it — no retyping.
Frequently asked questions
Is Line deduplicator free to use?
Yes. Line deduplicator is completely free with no sign-up, no watermarks and no usage limits.
Is my data private?
Yes. All processing happens in your browser, so your text is never sent anywhere.
Does Line deduplicator work on mobile?
Yes. It works in any modern browser on desktop, tablet or phone, and keeps working offline once the page has loaded.
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