Imagemagick: resize / convert to png or jpg / change png background color / send it somewhere

.bash_profile

# resize / convert to png / send it somewhere
# 
# function file size quality whereTo
# resizepng \*\.\* 300 82 img-full/
# 
resizepng() {
   mogrify -format png -path $4 -filter Triangle -define filter:support=2 -thumbnail $2 -dither None -quality $3 -unsharp 0.25x0.08+8.3+0.045 -define png:compression-filter=5 -define png:compression-level=9 -define png:compression-strategy=1 -define png:exclude-chunk=all -interlace none -colorspace sRGB $1
}

# resize / convert to png / fill transparency with a color / send it somewhere
#
# function file size quality whereTo
# 
# resizepngbg \*\.\* 300 82 "#000000" img-full/
# 
resizepngbg() {
  mogrify -format png -path $5 -filter Triangle -define filter:support=2 -thumbnail $2 -dither None -quality $3 -unsharp 0.25x0.08+8.3+0.045 -define png:compression-filter=5 -define png:compression-level=9 -define png:compression-strategy=1 -define png:exclude-chunk=all -interlace none -colorspace sRGB -background $4 -alpha remove  $1
}

# resize / convert to jpg / send it somewhere
# 
# function file size quality whereTo
# resizejpg \*\.\* 300 82 img-full/
# 
resizejpg() { 
    mogrify -format jpg -path $4 -filter Triangle -define filter:support=2 -thumbnail $2 -quality $3 -unsharp 0.25x0.08+8.3+0.045 -dither None -define jpeg:fancy-upsampling=off -interlace none -colorspace sRGB $1
}