Duplicate Line Remover
Instantly clean up lists, arrays, or text blocks by removing duplicate lines. Completely free and runs locally in your browser.
Options
Treat 'A' and 'a' differently
Ignore spaces around text
Delete all blank lines
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How to use Duplicate Line Remover
Paste your text or list into the 'Original Text' box.
Adjust the options on the right side if you want to ignore capitalization or empty lines.
The cleaned, deduplicated text instantly appears in the 'Cleaned Output' box.
Click Copy or Save to download your cleaned list as a .txt file.
Why use our Duplicate Line Remover?
Case Sensitivity Control
Choose whether to treat uppercase and lowercase versions of a word as duplicates or distinct items.
Automatic Trimming
Optionally trim trailing and leading spaces so 'Apple ' and 'Apple' are correctly identified as duplicates.
100% Secure & Private
All processing happens in your browser. Your files are never uploaded to our servers, guaranteeing absolute privacy and security.
Lightning Fast
Because everything runs locally on your device, processing is instant. No waiting in queues or dealing with slow uploads.
Frequently Asked Questions
Is there a limit to how many lines I can paste?
No, there is no strict limit. Because this tool runs entirely in your browser's memory, you can safely process tens of thousands of lines without any upload limits.
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