Krop bash alias

Krop_alias.sh

function kkrop(){
        # convert -gravity SouthEast -flatten -append  -trim +repage   -transparent white "$1" combined.pdf
        convert -gravity SouthEast -flatten -append  +repage   -transparent white "$1" combined.pdf
        pdftk combined.pdf "$1" cat output "$1.combo"
        cp /home/jonah/Dropbox/bin/blank.pdf "$1.cropped.pdf"
        evince "$1.cropped.pdf" &
        krop "$1.combo" --whichpages "2-" -o "$1.cropped.pdf"
        rm combined.pdf "$1.combo"
}

This is a bash_alias which uses image magick and pdftk to have the first page of the krop'ed pdf be an overlay. It only works with white background pages and, if the PDF has differently sized pages, will give a first page which is as large as overlay of all the largest pages