How can i convert this scanned file to general JPEG/PNG?
I used scanimage --mode=color --format=tiff > /tmp/testing.tiff from a scanner
$ convert -seperate testing.tiff testing.jpeg
convert: unrecognized option `-seperate' @ error/convert.c/ConvertImageCommand/2667.
$ convert -seperate -format jpg testing.tiff testing.jpg
convert: unrecognized option `-seperate' @ error/convert.c/ConvertImageCommand/2667.