Remove Duplicate Lines
Paste any list of lines and instantly remove duplicates. Useful for cleaning up email lists, keyword lists, code imports, log files, and more. All processing happens in your browser.
OPTIONS:
Characters: 0 | Lines: 0
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About This Tool
This tool removes duplicate lines from any block of text, preserving the first occurrence and discarding the rest. It's especially useful for cleaning up keyword lists, email lists, log entries, and code.
What do the options do?
- Case sensitive — when on, "Apple" and "apple" are treated as different lines.
- Trim whitespace — strips leading/trailing spaces before comparing, so " apple " and "apple" are treated as duplicates.
- Remove empty lines — deletes all blank lines from the output.
Is my text stored?
No. All processing happens entirely in your browser. Nothing is sent to any server.