Remove Duplicate Lines
Remove duplicate lines from your text online for free. Clean and deduplicate your text data quickly. Perfect for students organizing notes and professionals cleaning data.
What is Text Deduplication?
Text deduplication is the process of removing duplicate lines from a text document. This tool helps you clean your data by identifying and removing repeated lines, making your text more organized and easier to work with.
How to Remove Duplicate Lines
Paste your text into the input field, choose your options (case sensitive or not, preserve order or not), and the tool will instantly remove duplicate lines. You can see statistics about total lines, unique lines, and duplicates removed.
Common Use Cases
Students use this tool to clean up notes and study materials. Professionals use it to deduplicate data lists, email addresses, and other text-based information. It's especially useful when working with large datasets or when merging multiple sources of information.
Features
- ✓Remove duplicate lines from text instantly
- ✓Case-sensitive and case-insensitive options
- ✓Preserve or ignore original order
- ✓Real-time statistics (total, unique, duplicates)
- ✓Copy result to clipboard with one click
- ✓No registration required
- ✓Free and unlimited use
💡 Tips
Use case-sensitive mode when you want to treat "Hello" and "hello" as different lines. Use preserve order to keep the first occurrence of each line. Empty lines are automatically handled.