Runs locally
Remove Duplicate Lines
Keep the first copy of each line.
Ctrl+Enter runs. Ctrl+Shift+Backspace clears.
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Comparison is exact, including spaces.
About this tool
Clean a list of emails, keywords, URLs or IDs. Paste it, and every repeated line is removed while the first occurrence stays in its place.
How to use it
- 01
Paste the list, one item per line.
- 02
Duplicates are removed as you paste.
- 03
Copy the unique lines.
FAQ
Frequently asked questions
Is the comparison case-sensitive?
Yes. Lines must match exactly, including letter case and spaces. Use the text cleaner first to normalize spaces.
What happens to empty lines?
Empty lines are removed too; the first occurrence of every other line stays in its original place.