Convert and resize black and white tif images to resized transparent, white pngs

logo_tif_png_convert.sh

#!/bin/bash
# Convert and resize black and white tif images to resized transparent, white pngs
# convert utility from imagemagick
# Author: Philipp Gassmann <phiphi@phiphi.ch>
# source: logo in multiple languages in folder translated as en.tif, de.tif etc.
# target: converted/logo_en.png ..., converted/logo_en@2x.png ...

for original in translated/*.tif ; do
  convert $original -colorspace sRGB -depth 24 \
    -transparent white -fill white -opaque black \
    -resize 'x77' \
    -unsharp 0x5 -colorspace RGB \
    -set filename:fname 'logo_%t' png:'converted/%[filename:fname].png'
done

# HiDPI / Retina, double the size
for original in translated/*.tif ; do
  convert $original -colorspace sRGB -depth 24 \
    -transparent white -fill white -opaque black \
    -resize 'x154' \
    -unsharp 0x5 -colorspace RGB \
    -set filename:fname 'logo_%t@2x' png:'converted/%[filename:fname].png'
done