Remove Duplicate Lines
Remove repeated lines from a list in one click while keeping the original order.
Get rid of duplicate entries
Email lists, product codes, keyword lists, log lines and columns copied from Excel often contain duplicates. Remove Duplicate Lines keeps only the first occurrence of each line and drops the rest.
Options
- Ignore letter case (London and LONDON count as the same)
- Remove empty lines
- Keep the original order
You also see how many lines were removed and how many unique lines remain. Lists with thousands of lines are processed instantly in your browser, and your data isn't sent to a server.
How to use Remove Duplicate Lines
- Paste your list into the text box.
- Choose the case and empty line options.
- Duplicates are removed instantly.
- Copy or download the cleaned list.
Why use this tool?
Get a unique list in seconds without Excel formulas.
FAQ
Is the order of lines preserved?
Yes. Each line stays where it first appeared.
Do leading and trailing spaces matter?
Lines that differ only by spaces may be treated as different. Trim lines with the Whitespace Cleaner first.
Can I remove duplicate rows in a CSV?
For column-based comparison use the CSV Deduplicator.
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