This script is for generating and optimizing simple images with text in the center. I am using this to generate the thumbnail images on my website. http://goose.ninja

img

#!/bin/bash

usage ()
{
    echo "This script is for generating and optimizing simple images with text in the center."
    echo ""
    echo "usage: sh img [-t \"Text\"] [-s image size] [-o filename.png] [-bg \"#fill color\"] [-c \"#font color\"] [-fs font_size] [-f \"Font\"] [-h | --help]"
    echo ""
    echo "Image Settings:"
    echo "       -t  'imagetext'      Specify the text to be written on the image"
    echo "       -s  imagesize        specify the image size. Default: 800x333"
    echo "       -o  filename.png     specify the output filename. Default: image.png"
    echo "       -bg '#fillcolor'     Specify the fill color in hex"
    echo "       -c  '#fontcolor'     Specify the font color in hex"
    echo "       -fs fontsize         Specify the font size"
    echo "       -f  'fontname'       Specify the font"
    echo "       -h | --help          Print Script Usage"
    echo ""
}

text="Default Text"
image_size='800x333'
image_name='image.png'
bg_color='#34495E'
font_color='#ffffff'
font_size=72
font='Montserrat'

while [ "$1" != "" ]; do
    case $1 in
        -t )
          shift
          text=$1
          ;;
        -s )
          shift
          image_size=$1
          ;;
        -o )
          shift
          image_name=$1
          ;;
        -bg )
          shift
          bg_color=$1
          ;;
        -c )
          shift
          font_color=$1
          ;;
        -fs )
          shift
          font_size=$1
          ;;
        -f )
          shift
          font=$1
          ;;
        -h | --help )
          usage
          exit 0
          ;;
        * )
          usage
          exit 1
    esac
    shift
done

# Using ImageMagic to generate the blog post image
convert -size $image_size \
        -background $bg_color \
        -fill $font_color \
        -font $font \
        -gravity center \
        -pointsize $font_size \
        caption:"${text}" \
        $image_name

# Using pngquant to optimize the image
pngquant $image_name --ext=.png --force