script create an img tag with data for a given .png image file

file-to-data.sh

#!/bin/bash

# create an <img src=""> tag with data for a given .png image file

export in=$1

if [[ "$in" == '' ]]; then
    echo "usage: $0 infile"
    exit -1
fi

echo -n '<img src="data:image/png;base64,'

openssl enc -base64 -in $in | perl -p -e 's/\n//' -

echo '">'