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Remove Duplicate Lines

Paste text and instantly remove duplicate lines. Keep unique content only.

About Remove Duplicate Lines

Remove Duplicate Lines filters a block of text and removes all repeated lines, keeping only unique entries. Paste a list — emails, URLs, keywords, IDs, or any line-by-line data — and duplicates are eliminated instantly.

This is a common need when working with exported data, merging lists from multiple sources, or cleaning up copied text with repeated items. The tool is case-sensitive by default but supports case-insensitive deduplication.

The output shows the number of duplicates removed and unique lines remaining.

Features

  • Removes duplicate lines, keeps unique entries
  • Case-sensitive and case-insensitive modes
  • Shows count of duplicates removed
  • Preserves original line order
  • Handles any text format

Common Use Cases

  • Deduplicating email lists or subscriber exports
  • Cleaning up merged URL or keyword lists
  • Removing repeated log entries
  • Deduplicating ID or SKU lists from spreadsheets