Remove Duplicate Lines
Remove Duplicate Lines: Remove duplicate lines from text and keep only unique items.
Settings
Remove duplicate lines from your text quickly. Options for case-sensitive comparison, preserving original order, or sorting results.
How to Use
- 1
Paste your text (one item per line)
- 2
Choose options (case sensitive, sort results)
- 3
Get deduplicated text instantly
- 4
Copy the unique lines
Use Cases
Data Cleaning
Remove duplicates from lists, CSV data, or logs.
List Management
Clean up contact lists, email lists, or inventories.
Code Processing
Remove duplicate imports, dependencies, or entries.
Text Processing
Keep only unique lines in any text document.
How Duplicate Removal Works
Uses Set data structure for O(n) time complexity - very fast even with large texts.
Case-sensitive option allows precise control over what counts as duplicate.
Preserves original line order by default, or sorts results alphabetically.
All processing happens in your browser - no data sent to servers.
Frequently Asked Questions (FAQ)
Q.Does it preserve line order?
A. Yes, by default. You can also sort results alphabetically if needed.
Q.Is it case-sensitive?
A. You can choose. By default it's case-insensitive, but you can enable case-sensitive mode.
Q.Can it handle large files?
A. Yes, it efficiently processes even very large text files with millions of lines.
Q.Is my data safe?
A. Absolutely! Everything processes locally in your browser.
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