Remove Duplicate Lines — Clean Lists Instantly
Free tool to remove duplicate lines from a list. Keep unique lines only, ignore case, trim spaces and skip empty lines. Works instantly in your browser.
Runs in your browser — your data is never uploaded.
Paste any list — emails, keywords, URLs, product codes — and this tool removes repeated lines while keeping the original order. Options let you ignore upper/lower case, trim extra spaces and drop empty lines. It also tells you how many duplicates were removed, which is useful for cleaning data before an import.
How to use the Remove Duplicate Lines
- Paste your list, one item per line.
- Choose whether to ignore case, trim spaces or skip blank lines.
- Copy the cleaned unique list.
Remove Duplicate Lines — frequently asked questions
Does it keep the original order?
Yes. The first occurrence of each line is kept in its original position.
Can it ignore capital letters?
Yes. Turn off case sensitivity to treat “Apple” and “apple” as the same line.
Is there a line limit?
No fixed limit; lists with tens of thousands of lines work well on most devices.
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