Duplicate Line Remover | Clean Up Text
Remove duplicate lines from text with options for case sensitivity, whitespace trimming, empty-line removal, order preservation, and duplicate extraction.
How are duplicates detected?
Duplicates are matched by exact line text. You can toggle case sensitivity and trimming to control how lines are compared.
What does ‘Extract Duplicates’ do?
It outputs one instance of each line that appears more than once, letting you focus on duplicates only.
Can I preserve the original order?
Yes. Use Preserve Order to keep the original sequence. Switch to Sort Lines for alphabetical grouping before deduplication.
Is my text private?
Yes. All processing happens locally in your browser. Nothing is uploaded or stored externally.
Is my data safe and private?
Yes, all processing happens locally in your browser. Your text never leaves your device, ensuring complete privacy and security.
Is this tool free to use?
Absolutely! All our tools are completely free with no hidden costs, registration requirements, or usage limits.
Does this work on mobile devices?
Yes, our tools are fully responsive and work perfectly on desktop, tablet, and mobile devices.
Which browsers are supported?
Our tools work in all modern browsers including Chrome, Firefox, Safari, and Edge. No plugins or extensions required.