Remove Duplicate Lines
Remove duplicate lines from your text while preserving the original order
Input Text
Paste or type your text here
Options
Output Text
Processed text will appear here
How It Works
Remove duplicate lines from your text while preserving the original order
Remove duplicate lines from your text, keeping only unique entries. Paste a list with repeated lines and get a clean version with duplicates eliminated. Essential for cleaning email lists, deduplicating data exports, and removing repeated entries from logs and datasets.
Key Features
- ✓Removes exact duplicate lines
- ✓Case-sensitive and case-insensitive modes
- ✓Preserves original line order
- ✓Shows count of duplicates removed
- ✓Handles large text inputs
How to Remove Duplicate Lines
- 1
Paste your text
Enter text with duplicate lines.
- 2
Duplicates are removed
Only unique lines remain in the output.
- 3
Copy clean text
Click copy to get the deduplicated text.
Common Use Cases
- •Cleaning email lists to remove duplicate addresses
- •Deduplicating data rows from spreadsheet exports
- •Removing repeated log entries
- •Cleaning up lists of URLs or file paths
Frequently Asked Questions
Which instance is kept when duplicates are found?▼
The first occurrence of each line is kept. All subsequent duplicates are removed.
Is comparison case-sensitive?▼
By default, yes. "Hello" and "hello" are treated as different lines. You can toggle case-insensitive mode.