Remove Duplicates

Remove duplicate items from lists

Privacy Protected
Offline Processing
Instant Results
List Input
Options

When disabled, "John" and "john" will be treated as duplicates

When disabled, results will be sorted alphabetically

Examples

Mixed Case Names

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Names with different capitalizations

Email List

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Email addresses with duplicates

Product Codes

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Product SKUs with duplicates

URLs

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Website URLs with duplicates

Unique Items
About Duplicate Removal

Algorithm: Keeps the first occurrence of each unique item

Case Sensitivity: Option to treat different cases as duplicates

Order: Maintain original order or sort alphabetically

Performance: Efficient for large lists using Set data structure

About This Tool

Remove duplicate items from lists

Privacy & Security

  • • All file processing happens locally in your browser
  • • Your files never leave your device or get uploaded to any server
  • • No data collection, tracking, or storage of your files
  • • Works completely offline once the page is loaded

Keywords

listduplicatesremoveunique