Duplicate Line Remover
Find and remove duplicate lines from lists and text documents with case-sensitivity options, whitespace trimming, and line sorting.
How to Use Duplicate Line Remover
- Paste Your List: Paste your list of items, URLs, emails, or data rows into the input pane.
- Configure Deduplication: Toggle Case Sensitivity, Trim Whitespace, and pick optional Sorting (A-Z, Z-A, Length, or Original order).
- Click Remove Duplicates: Process the list to instantly isolate unique items and review duplicate count metrics.
- Copy Clean List: Copy the deduplicated list to clipboard or download as a text file.
Frequently Asked Questions
How does case sensitivity affect duplicate line removal?
When case sensitivity is OFF (default), 'Item' and 'item' are treated as identical duplicates. When ON, they are treated as distinct unique lines.
Can I sort the unique list alphabetically?
Yes, you can choose to preserve the original appearance order or sort alphabetically A-Z, Z-A, or by line length.
What happens to leading and trailing whitespace?
When 'Trim Whitespace' is enabled, lines with accidental trailing spaces (e.g. 'test ' and 'test') are matched as duplicates and cleaned.
Is there a limit to how many lines I can deduplicate?
The tool can effortlessly process lists containing tens of thousands of lines directly in your browser.