Remove Duplicate Lines Tool

Remove duplicate lines from your text while preserving the original order. Perfect for cleaning up lists and data sets.

Enter Your Text

Results

Enter your text above to remove duplicates

Duplicate Removal Tips & Best Practices

How It Works

Preserves Order: First occurrence of each line is kept
Case Sensitivity: Choose whether to treat "Hello" and "hello" as different
Empty Lines: Option to remove or keep blank lines
Statistics: See exactly how many duplicates were removed

Common Use Cases

Email Lists: Remove duplicate email addresses
Data Cleaning: Clean up CSV or list data
Code Comments: Remove duplicate comments or lines
Inventory Lists: Clean up product or item lists

Best Practices

Use case insensitive for most general cleaning tasks
Remove empty lines for cleaner results
Review the results to ensure important data wasn't lost
Use case sensitive when dealing with case-sensitive data