Minify images (jpg/png) in the current folder to smaller sizes (up to ~350k). Example run: > minify -- converting with quality 70, resize 100% 134 (25).png -- converting with quality 70, resize 100% -- converting with quality 70, resize 84% 144 .jpeg > ll minified -rw-r--r-- 1 zhaery users 130K 21. Aug 19:33 134 (25).png.jpg -rw-r--r-- 1 zhaery …

minify.rb

#!/usr/bin/env ruby
require 'fileutils'

threshold = 350e3
$output = "minified"
$quality = 70
FileUtils.mkdir_p $output

def conv org, factor = 1.0
	puts "-- converting with quality #{$quality}, resize #{(factor*100).round}%"
	`convert "#{org}" -quality #{$quality} -resize #{(factor*100).round}% "#{$output}/#{org}.jpg"`
end

Dir["*"].find_all do |c|
	c.downcase =~ /\.(jpg|png|jpeg)$/
end.map do |c|
	[c,File::stat(c)]
end.find_all do |c,s|
	s.file? and s.size > threshold
end.each do |c,s|
	conv c
	rs = File::stat "#{$output}/#{c}.jpg"
	if rs.size > threshold
		factor = rs.size / threshold
		normf = 1 / Math::sqrt(factor)
		conv c, normf
	end
	puts "\e[32;1m#{c}\e[0m"
end