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Remove Duplicates Online

Clean up your text by removing duplicate lines or items in seconds

How to Use This Tool

  1. Paste your text - Insert any text with duplicate lines or items
  2. Choose options:
    • Case sensitive: Keep capitalization differences
    • Trim whitespace: Ignore extra spaces when finding duplicates
    • Keep empty lines: Preserve blank lines in results
    • Preserve whitespace: Keep original spacing, tabs, and line breaks
    • Sort results: Organize output alphabetically or by length
  3. Click "Remove Duplicates" - Get clean, unique items instantly
  4. Copy, download or edit - Use the result however you need

Common Use Cases

  • Cleaning email lists or contact databases
  • Removing duplicate entries from spreadsheets
  • Filtering repeated lines in log files while preserving formatting
  • Preparing unique word lists in alphabetical order
  • Simplifying inventory or product lists by length

Example Transformation

Before (With Duplicates)After (Sorted A-Z)
Apple
 orange
apple
Orange
  ORANGE
banana
apple
Apple
Orange
ORANGE
apple
banana
orange