Key takeaways
- Remove Duplicate Lines deletes repeated lines from a list automatically, keeping only one copy of each.
- Useful for cleaning up an exported contact list, a combined spreadsheet column, or any list assembled from multiple sources.
- Works instantly on lists of any length — no manual scanning for repeats.
Cleaning a list
Paste your list into Remove Duplicate Lines and the cleaned version, with repeats removed, appears instantly.
Frequently asked questions
Is it case-sensitive — will 'Email' and 'email' count as duplicates?
Check the tool's case-sensitivity option if that distinction matters for your list — by default, treat the behavior as case-sensitive unless you toggle it.
Does it keep the original order of the remaining lines?
Yes — the first occurrence of each line is kept in its original position; only later repeats are removed.