Create data URI image from Terminal command

image64.sh

#!/bin/sh
# Examples:
# ./image64.sh myImage.png
#   outputs: data:image/png;base64,xxxxx
# ./image64.sh myImage.png -img
#   outputs: <img src="data:image/png;base64,xxxxx">

append=""

if [[ "$1" == *.gif ]]; then
	append="data:image/gif;base64,";
elif [[ "$1" == *.jpeg || "$1" == *.jpg ]]; then
	append="data:image/jpeg;base64,";
elif [[ "$1" == *.png ]]; then
	append="data:image/png;base64,";
elif [[ "$1" == *.svg ]]; then
	append="data:image/svg+xml;base64,";
elif [[ "$1" == *.ico ]]; then
	append="data:image/vnd.microsoft.icon;base64,";
fi

#Mathias Bynens - http://superuser.com/questions/120796/os-x-base64-encode-via-command-line
data=$(openssl base64 < $1 | tr -d '\n')

if [ "$#" -eq 2 ] && [ $2 == -img ]; then
	data=\<img\ src\=\"$append$data\"\>
else
	data=$append$data
fi

echo $data | pbcopy

echo "copied to clipboard"