Duplicate Remover

Clean up your text by removing duplicate lines. Perfect for cleaning email lists, data sets, or any text with repeated content.

Input Text

Result

About Duplicate Remover

This tool helps you clean up text by removing duplicate lines. It's perfect for:

  • Cleaning email lists
  • Removing duplicate data from CSV files (one entry per line)
  • Deduplicating code snippets or log files
  • Cleaning up any text with repeated content

Advanced Options

  • Case Sensitive: When enabled, "Text" and "text" are considered different lines.
  • Trim Whitespace: Removes leading and trailing spaces before comparison.
  • Ignore Empty Lines: Skips blank lines during processing.
  • Comparison Methods: Choose between exact matching, normalized (ignores extra spaces), or trimmed (ignores leading/trailing spaces).

Performance

The tool is optimized to handle large datasets efficiently. For very large inputs (10,000+ lines), processing is done in chunks to maintain browser responsiveness.