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📘 About the Remove Duplicate Lines
Paste a list with one item per line — email addresses, phone numbers, names, keywords, roll numbers — and every repeated line is removed, keeping the first one in its original position.
The counts show how many lines you started with, how many are unique and how many duplicates were removed.
💡 How to use the Remove Duplicate Lines
Paste your list, one item per line.
Choose whether to ignore upper/lower case and extra spaces.
Copy or download the unique list.
❓ Frequently asked questions
Does it change the order?
No. The first copy of each line stays where it was. Use Sort Lines afterwards if you want A–Z order.
Can it handle large lists?
Yes, tens of thousands of lines, all in your browser.