Text Tools
Remove Duplicate Lines
Clean up repetitive content by removing duplicate lines while preserving first appearances and line order.
Unique lines
0
Input lines
0
Duplicates removed
0
Duplicate groups
0
Result
Cleaned lines will appear here.
Duplicate line details
No duplicates detected.
What this tool does
Use this tool to remove duplicate lines from any pasted text and optionally trim whitespace, apply case-sensitive matching, and collapse repeated blank lines.
How to use it
- Paste or type your text.
- Choose matching options (trim, case sensitivity, blank-line collapse).
- Copy the deduplicated text and paste it into your workflow.
Privacy note
This tool runs in your browser. No text is uploaded or stored on a server.
FAQ
Does it keep the first duplicate line?
Yes. The tool keeps the first occurrence of each line and removes repeated copies that appear later.
Is matching case-sensitive?
You can choose case-sensitive matching or disable it to treat Alpha and alpha as duplicates.
Does this send my text to a server?
No. The tool runs in your browser and never uploads pasted text.