Paste text
Add one item per line.
Code & Data Tool
Remove Duplicate Lines
Remove repeated lines while keeping the first occurrence.
Loading workspace...
About this tool
What is Remove Duplicate Lines?
Remove Duplicate Lines removes repeated lines from text and keeps the first occurrence of each.
Useful when you need to
- Clean a list of names or emails
- Dedupe keywords
- Tidy log lines
How to use
How to use Remove Duplicate Lines
01 02 Clean
Run the tool.
03 Review
Check the result.
04 Copy
Copy the unique lines.
Tips
Get better results
- Lines that differ by case or spaces count as different.
- Use Trim Spaces first for better results.
FAQ
Frequently asked questions
Which duplicate is kept?
The first one.
Is it private?
Yes.
Does it change the order?
No.
More practical guides · File handling and privacy · Report an incorrect instruction