Duplicate-line remover
Deduplicate a list locally with options for trimming, case sensitivity, and blank-line handling while preserving original order.
Local processing
Result
Your result will appear here
The input stays available if you need to adjust a setting.
How to use duplicate-line remover
- 1
Paste one item per line.
- 2
Choose how lines should be compared.
- 3
Remove duplicates and copy the ordered result.
A realistic example
Clean a pasted email-domain list while keeping the first occurrence order.
Supported formats and limits
Input and output: line-delimited UTF-8 text.
- The first matching line is retained; later duplicates are removed.
- Comparison options affect matching, not the retained line's original spelling.
Questions people ask
Does the result get sorted?
No. Original order is preserved; use Line sorter when sorting is also needed.
Can `Alpha` and `alpha` be treated as duplicates?
Yes. Leave case-sensitive matching off.