How to Remove Duplicate Lines
Tool location: /txt/duplicate-remove
Remove duplicate lines from your text, keeping only unique entries. Perfect for cleaning up data lists, email lists, or any text where duplicates need to be eliminated.
Step-by-Step Instructions
Paste or type your text with each item on a separate line.
Adjust settings:
- Case-sensitive: Treat "Apple" and "apple" as different
- Trim whitespace: Remove leading/trailing spaces before comparison
Click to process. The tool keeps the first occurrence of each unique line.
See how many duplicates were removed and copy the cleaned text.
Key Features
Preserves Order
Keeps first occurrence, maintains original sequence.
Case Options
Case-sensitive or case-insensitive comparison.
Statistics
Shows how many duplicates were removed.
Whitespace Handling
Option to trim spaces before comparing.
Pro Tips
- Use case-insensitive mode for text that may have inconsistent capitalization.
- Enable trim whitespace to catch duplicates that differ only by spaces.
- Good for cleaning up email lists, names, or any data with potential duplicates.
Frequently Asked Questions
Q: Which duplicate is kept?
A: The first occurrence of each unique line is kept. All subsequent duplicates are removed.
Q: Are blank lines considered duplicates?
A: Yes, multiple blank lines are reduced to one (or removed entirely based on settings).