Duplicate Line Remover

Remove duplicate lines from text with advanced options

Smart Detection Case Options Preserve Order

Remove duplicate lines while preserving the original order

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Case Sensitive

Treat "Apple" and "apple" as different

Trim Whitespace

Remove leading and trailing spaces

Remove Empty Lines

Remove blank or empty lines

Keep First Occurrence

Preserve the first occurrence of duplicates

Advanced algorithm that preserves the first occurrence of each line while removing subsequent duplicates, maintaining original order.

Choose case-sensitive or case-insensitive matching, trim whitespace, remove empty lines, and control which occurrence to keep.

View original line count, unique lines, duplicates removed, and percentage reduction for better data analysis.

See duplicates removed instantly as you type or paste text. No need to click buttons or wait for processing.

One-click copy functionality to quickly use your cleaned text in other applications or documents.

Fully responsive design that works perfectly on desktop, tablet, and mobile devices for on-the-go text cleaning.