Remove duplicate lines
Clean up email lists, keywords, IDs or any list by removing repeated lines.
Free No sign-up Runs in your browser
How it works
How to use the Remove Duplicate Lines tool
- 1
Paste your list
One item per line.
- 2
Choose options
Case-sensitivity, trimming and empty lines.
- 3
Copy the result
See how many duplicates were removed.
Order preserved
The first occurrence of each line is kept in its original position, so lists keep their meaning. Use the Text Formatter if you also want to sort them.
Limitations
We’d rather be upfront about what this tool can’t do yet:
- Compares whole lines, not partial matches.
FAQ
Frequently asked questions
Is my data sent anywhere?
No. All processing happens locally in your browser. Nothing you enter is uploaded, stored or logged.
Can I remove duplicates from a CSV column?
Paste just that column here, or use a spreadsheet’s Remove Duplicates feature for multi-column data.
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