Remove Duplicate Lines
Paste a list and remove duplicate lines while preserving order.
Remove Duplicate Lines
Dedupe a list while keeping the first or last occurrence, with case and whitespace options.
How to use Remove Duplicate Lines
- 1
Paste your list
Drop a multi-line list into the input — one entry per line.
- 2
Pick your rules
Toggle case-sensitivity, whitespace trimming, removing empty lines, and whether to keep the first or last occurrence of each duplicate.
- 3
Review the output
The cleaned list appears instantly with a count of how many lines were removed.
- 4
Copy or download
Save the deduped list to a .txt file or copy it back to wherever you started.
About Remove Duplicate Lines
Paste a list and remove duplicate lines while preserving order.
Use Remove Duplicate Lines when you need to dedupe lines instantly. Review the available options in the interface, process your input, and check the result before saving or copying it.
Frequently asked questions
Yes. When 'Keep first' is selected the first occurrence of each unique line stays in place; 'Keep last' keeps the last occurrence.
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