image/compress-pngs

   1 #!/bin/bash
   2
   3 FILE_LIST_CMD="find . -type f -name \"*.png\""
   4
   5 if [ -n "$1" ] ; then
   6     FILE_LIST_CMD="echo $1"
   7 fi
   8
   9 bash -c "$FILE_LIST_CMD" | while read PNG_FILE ; do
  10     echo Compressing $PNG_FILE
  11     hash optipng 2>/dev/null  && optipng -o3 -quiet "$PNG_FILE"
  12     hash advpng 2>/dev/null   && advpng -z -4 "$PNG_FILE"
  13     hash advdef 2>/dev/null   && advdef -z -4 "$PNG_FILE"
  14     hash pngcrush 2>/dev/null && pngcrush -q -ow -brute "$PNG_FILE"
  15 done