About the remove duplicate lines
The first occurrence of each line is kept and later ones removed, so the original order survives. That matters when the list is ordered by something other than the text itself.
Ignoring surrounding spaces is on by default because trailing whitespace is invisible and is the usual reason two lines that look identical are not.
Frequently asked questions
- Is my text sent anywhere?
- No. Everything runs inside your browser. Nothing you paste or type is uploaded, stored or logged, and the page keeps working with the network disconnected.
- Does it sort the list?
- No. Order is preserved and the first occurrence of each line is the one kept. Use the line sorter if you want it ordered as well.
- Why are two lines that look the same not being merged?
- Almost always trailing whitespace or a difference in case. Both have switches above.
Related text tools
How your data is handled
Everything happens on your device. There is no upload, no storage and no logging. Closing the tab clears everything you entered.