Remove Duplicate Lines
Delete repeated lines from a list while keeping the original order.
Paste a list with repeated lines and get back a cleaned-up version with duplicates removed, keeping the first occurrence of each line in its original order.
Your files and text are processed locally in your browser — nothing is uploaded to a server.
Duplicate Line Remover tool
How to Use Duplicate Line Remover
- Paste your list, one item per line.
- Choose whether matching should be case-sensitive.
- Click Remove Duplicates and copy the result.
Features
- Preserves original line order
- Optional case-sensitive matching
- Shows how many duplicates were removed
- Works fully offline in your browser
Frequently Asked Questions
Does it remove blank lines too?
Blank lines are treated as duplicates of each other by default, so only the first blank line is kept.
Is matching case-sensitive?
You can toggle case-sensitive matching on or off before running the tool.