Duplicate Line Remover
Deduplicate SKU lists, keyword lists, email lists or pasted lines while preserving order by default.
Unique lines
- Original line count: 5
- Unique line count: 2
- Removed duplicates: 3
How to use this tool
Enter the required values in the labeled fields. Results update in your browser and are announced for assistive technologies. Use realistic measurements and verify important outcomes before acting on them.
Formula or logic
Each line is compared using your trim and case-sensitivity settings. The default keeps the first occurrence.
Example calculation
Example: SKU1, SKU2, SKU1 becomes SKU1, SKU2.
Frequently asked questions
Does it preserve order?
Yes, unless sorting is enabled.
Can it keep the last duplicate?
Yes. Switch keep mode to last occurrence.
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