How does the deduplication work?

The tool compares each line against all others using Set-based algorithms for efficient duplicate detection. You can configure case sensitivity, whitespace trimming, and whether to ignore empty lines to match your specific needs.

Is this tool free to use?

Yes! This tool is completely free with no hidden costs, subscriptions, or limitations. Use it as often as you need.

Do I need to create an account?

No account needed. The tool works entirely in your browser without requiring signup or personal information.

Does this work on mobile devices?

Yes, this tool is fully responsive and works on smartphones, tablets, and all desktop browsers.

Absolutely. All processing happens locally in your browser. Your data never leaves your device and is not stored on any server.

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📝 Deduplicate Lines

Remove duplicate lines from text, keep unique lines only

Input Text

Total lines: 0

Options

Case sensitive Trim whitespace before comparing Ignore empty lines Sort output alphabetically

Output

Output lines: 0

How to Use

Paste your text with one item per line
Choose your deduplication options
Click "Remove Duplicates" to get unique lines
Or click "Show Duplicates Only" to see what would be removed
Copy the result to your clipboard