Remove Duplicate Lines
Clean up a list by removing duplicate lines while keeping the first occurrence.
Duplicate lines removed
2
Unique lines
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About this tool
Paste a list of lines — emails, URLs, keywords, or any text list — to instantly remove duplicates while preserving the original order of first occurrences.
How to use this tool
- 1
Paste your list
One item per line.
- 2
Review the count
See how many duplicate lines were found.
- 3
Copy the cleaned list
Use the copy button on the deduplicated output.
Frequently asked questions
- Is the comparison case-sensitive?
- Yes — "Apple" and "apple" are treated as different lines. Run the text through the case converter first if you want case-insensitive deduplication.
- Does it ignore leading/trailing spaces when comparing?
- Yes — lines are compared after trimming whitespace, so "banana" and "banana " are treated as duplicates.
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