Duplicate Line Remover
Text ToolsRemove duplicate lines
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About Duplicate Line Remover
Remove duplicate lines from text while preserving order.
Frequently Asked Questions
How does the duplicate remover work?
The tool compares each line in your text and keeps only the first occurrence of each unique line. Subsequent identical lines are removed. You can choose case-sensitive or case-insensitive matching.
What does the trim whitespace option do?
When enabled, leading and trailing spaces on each line are removed before comparing. This means lines that differ only by extra spaces will be treated as duplicates.
Can I use this for large lists?
Yes. The tool processes text entirely in your browser and can handle thousands of lines efficiently. There is no upload limit since nothing is sent to a server.
Is my data safe?
Yes! All processing happens entirely in your browser. Your text is never sent to any server. No data is collected, stored, or transmitted.
Does the tool preserve the original order of lines?
Yes. The first occurrence of each unique line is kept in its original position. Only subsequent duplicate appearances are removed.
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