Duplicate Line Remover
Remove duplicate lines from text and lists online for free. Sort alphabetically, trim whitespace, and preserve order locally.
Clean up repetitive lists, email rosters, and data sets. Remove duplicate lines, trim leading/trailing whitespace, ignore case differences, and optionally sort alphabetically.
How to use
- Paste your list or multi-line text into the input field.
- Toggle case-sensitivity, blank line removal, or whitespace trimming according to your needs.
- Optionally sort the output alphabetically (A-Z, Z-A) or naturally (numeric order).
- Click "Copy Output" to save the deduplicated result to your clipboard.
Frequently asked questions
Does it preserve line order?
Yes. If sorting is set to "None", lines maintain their original first-occurrence appearance order.
Are large files supported?
Yes, tens of thousands of lines can be deduplicated instantly inside your browser memory.