Remove Duplicate Lines
Remove duplicate lines from your text instantly. Clean lists, data and text while keeping the original order of unique lines.
Clean Your Lines
Paste your text and duplicate lines will be removed automatically.
Duplicate Detection Options
Original Text
One item per line
Cleaned Result
Duplicate lines removed
Original Lines
0
Unique Lines
0
Duplicates Removed
0
Characters Saved
0
Remove Duplicates
Automatically remove repeated lines while preserving the order of the first occurrence.
Flexible Matching
Choose whether duplicate detection should be case-sensitive or case-insensitive.
Clean Your Data
Trim unnecessary whitespace and optionally remove empty lines from your content.
View Statistics
See original lines, unique lines, duplicates removed and characters saved.
How Duplicate Line Removal Works
ToolSquare compares each line against the lines it has already seen and keeps only the first occurrence.
Paste Your Lines
Add your list, text or data with one item on each line.
Choose Matching Rules
Control case sensitivity, whitespace handling and empty-line removal.
Copy Clean Results
Review the cleaned list and copy the unique lines whenever you are ready.
Your Data Stays Private
Remove Duplicate Lines works entirely in your browser. Your text does not need to be uploaded to a server, making it suitable for lists, datasets and private content.