Download and install imagemagick plus configure automator app for converting PDFs to PNGs

os-x-ghostscript-imagemagick

#!/usr/bin/env bash

# Install using:
# bash < <(curl -s https://gist.githubusercontent.com/jaygooby/1248106/raw/6d8ef1c0c84a47a34a6890973c8d32d22466a736/os-x-ghostscript-imagemagick)

IM_TGZ=ImageMagick-x86_64-apple-darwin17.3.0.tar.gz
IM_URL=https://www.imagemagick.org/download/binaries/$IM_TGZ
IM_TMP_FILE=/tmp/$(basename $IM_URL)
IM_SUM="33849 17409"

GS_URL=http://pages.uoregon.edu/koch/Ghostscript-9.22.pkg
GS_TMP_FILE=/tmp/$(basename $GS_URL)
GS_SUM="11670 22743"

function continue_or_exit {
	read go < /dev/tty

	if [[ ! $go =~ [gG][oO] ]]; then

		if [[ $go =~ [Ee][Xx][Ii][Tt] ]]; then
			exit 0
		else
			echo -e "Type \033[1m\033[35mgo\033[0m to continue or \033[1m\033[35mexit\033[0m to quit"
			continue_or_exit
		fi
	fi
}

# got curl?
DOWNLOAD=`which curl`
if [ $? == 0 ]
  then
		echo "got curl"
		OPTIONS=" -o "
  else
		echo "trying wget"
		# got wget?
    DOWNLOAD=`which wget`
		if [ $? == 0 ]
			then
				echo "got wget"
				OPTIONS=" -O "
			else
				echo "Giving up. You need to install curl or wget"
				exit 1
		fi
fi


# be idempotent
if [[ ! $(sum $GS_TMP_FILE) == "$GS_SUM $GS_TMP_FILE" ]]; then
		echo "Downloading ${GS_URL}"
		$($DOWNLOAD $OPTIONS $GS_TMP_FILE $GS_URL)
fi
# if we get a 1 from $? then the download failed or timed out
if [ $? == 0 ]
	then
		echo "Ghost script downloaded. I'll open a window for you to install it. Come back here once you're done."
		$(open $GS_TMP_FILE)
		echo -e "Once you've completed the ghostscript install type \033[1m\033[35mgo\033[0m and then press return to continue"
		echo -n "::: "
		continue_or_exit

	else
		echo "${GS_URL} download failed or timed out. Please try again"
		exit 1;
fi

if [[ ! $(sum $IM_TMP_FILE) == "$IM_SUM /tmp/$IM_TGZ" ]]; then
		echo "Downloading ${IM_URL}"
		$($DOWNLOAD $OPTIONS $IM_TMP_FILE $IM_URL)
fi

# if we get a 1 from $? then the download failed or timed out
if [ $? == 0 ]
	then
		cd $HOME
		tar -zxvf $IM_TMP_FILE -s,ImageMagick-7.0.7/,.ImageMagick-7.0.7/,

		echo 'export MAGICK_HOME="$HOME/.ImageMagick-7.0.7"' >> ~/.bash_profile
		echo 'export PATH="$MAGICK_HOME/bin:$PATH"' >> ~/.bash_profile
		echo 'export DYLD_LIBRARY_PATH="$MAGICK_HOME/lib/"' >> ~/.bash_profile

		export MAGICK_HOME="$HOME/.ImageMagick-7.0.7"
		export PATH="$MAGICK_HOME/bin:$PATH"
		export DYLD_LIBRARY_PATH="$MAGICK_HOME/lib/"
	else
		echo "${IM_URL} download failed or timed out. Please try again"
		exit 1
fi

echo "OK, you're all set with Ghostscript and Imagemagick"
echo "Now we'll check whether we can run them..."
convert --version
if [ $? == 0 ]; then
	echo "Imagemagick looks good"
else
	echo "There's a problem with ImageMagick"
fi
gs --version
if [ $? == 0 ]; then
	echo "ghostscript looks good"
else
	echo "There's a problem with ghostscript"
fi