Remove duplicate lines
Paste a list to remove repeated lines, keeping the first of each and the original order.
Frequently asked questions
Which copy of a duplicate is kept?
The first one. Later copies are removed and the order of the remaining lines does not change.
Are “Apple” and “apple” duplicates?
Only if you tick “ignore case”. With “trim spaces”, lines that differ only in spaces at the start or end count as the same too.
How large a list can I paste?
Hundreds of thousands of lines work in a modern browser; the work happens on your device.