Duplicate Line Remover - Remove Duplicate Lines Online
Remove duplicate lines from text instantly with our free duplicate line remover tool. Delete repeated lines while preserving unique entries with advanced filtering options for case sensitivity, trimming, and sorting. Perfect for cleaning lists and data.
Duplicate Line Remover
Remove duplicate lines and keep only unique entries
Processing Options
Input Text (One Item Per Line)
Unique Lines Result
Common Use Cases
Data Cleaning:
- • Remove duplicate entries from lists
- • Clean up email lists and contact data
- • Deduplicate URLs or file paths
- • Process CSV data columns
- • Clean survey responses
Content Management:
- • Remove duplicate keywords or tags
- • Clean up product listings
- • Deduplicate social media posts
- • Process log files and error lists
- • Organize research notes
Processing Tips
• Case Sensitivity: Enable when "Apple" and "apple" should be treated as different items
• Trim Whitespace: Recommended to avoid duplicates caused by extra spaces
• Keep First vs Last: Choose whether to preserve the first or last occurrence of duplicates
• Sort Results: Useful for organizing the final list alphabetically
• Large Files: This tool can handle thousands of lines efficiently in your browser
All duplicate removal is performed locally in your browser. No data is uploaded or stored.