How do I use the remove duplicate lines and sort lists?
- Paste one item per line.
- Choose a sort order and whether case matters.
- Press Clean list and copy the result.
Remove duplicate lines and sort lists: frequently asked questions
Does it keep the first or last duplicate?
The first one, in its original position, unless you sort the list.
Is there a size limit?
It handles tens of thousands of lines in the browser. Very large files are faster in a spreadsheet or script.
What does the tool do?
It removes repeated lines from a list and keeps the first occurrence.
Is it case-sensitive?
You can choose whether different capitalisation counts as a duplicate.
Does it trim spaces?
Optionally, so lines differing only by spaces count as duplicates.
Is the order kept?
Yes. Remaining lines stay in their original order.
Can I clean email lists?
Yes. Make emails lowercase first.
Does it work with Arabic?
Yes. Arabic lines are compared as Unicode text.
How many lines can it handle?
Tens of thousands of lines.
Can I sort the result?
Sort in a spreadsheet afterwards.