I am trying to create a new "reduced file size" export filter within preview.
Therefore I copied the original file to desktop, made my changes and then I tried to copy back to the folder. This seems not to be permitted. Even with admin account and with sudo on terminal as well.
sudo cp Reduce\ File\ Size.114dpi.qfilter /System/Library/Filters cp: /System/Library/Filters/Reduce File Size.114dpi.qfilter: Operation not permitted
How can I move this file to the folder?