Duplicate Line Remover [2025]
Remove duplicate lines from your text with customizable options for case sensitivity and whitespace handling.
Features
- Remove duplicate lines while optionally preserving original order
- Toggle case sensitivity for smarter duplicate detection
- Option to trim whitespace for more accurate matching
- View statistics about removed duplicates
- Copy cleaned text with one click
Example Usage
Case Sensitive Example:
Input:
Hello hello World world
Output (case sensitive):
Hello hello World world
Output (case insensitive):
Hello World
Whitespace Example:
Input:
Hello Hello Hello
Output (with trim):
Hello
Common Use Cases
- Clean up log files by removing duplicate entries
- Remove duplicate lines from code or configuration files
- Clean up lists of emails or usernames
- Deduplicate data before importing into spreadsheets
- Remove redundant entries from text-based databases
Tips
- Use case-insensitive mode when working with natural language text
- Enable whitespace trimming when dealing with copied text from various sources
- Keep order preservation enabled when sequence matters (like log files)
- Use statistics to verify the number of duplicates removed
- For large texts, consider processing in smaller chunks
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