Krita
Copy the selection to a new layer
To copy the selection to a new layer in Krita, press Ctrl + Alt + J. It is listed for Windows, and no Mac version is documented here.
Where it works: Selection active
Where this comes from
Krita default action files - KDE Krita repository
Documentation checked on 2026-09-14. That is a documentation review, not a test run inside the application.