Remove Duplicate Lines
Delete repeated lines from a list while keeping the original order.
Lists gathered from different places pile up repeats — email exports, keyword research, log files, or merged spreadsheets. This tool scans your list line by line and removes any line that has already appeared, keeping the first occurrence and preserving the original order so nothing gets reshuffled. It is a fast way to clean a mailing list, de-duplicate a keyword set, or tidy any list before you use it.
How to use the Remove Duplicate Lines
- Paste your list into the input, one item per line.
- Turn on "Ignore case" if Apple and apple should count as the same entry.
- Copy the de-duplicated list from the result box.
Frequently asked questions
Does it sort the lines?
No — the original order is preserved. To sort as well, run the result through the Sort Text Lines tool.
Which duplicate is kept?
The first time a line appears is kept; every later repeat of it is removed.
Does trailing whitespace matter?
Yes. Two lines only count as equal if they match exactly (aside from case, when Ignore case is on), so stray spaces can make otherwise-identical lines look different.