TinyPNG 官方网址：https://tinypng.com 是一个非常不错的图片压缩工具，在保持alpha通道的情况下对PNG的压缩可以达到1/3之内，而且用肉眼基本上分辨不出压缩的损失。
=begin
https://tinypng.com/developers/reference/ruby
调用tinypng的API对png和jpg格式的图片进行批量压缩
将TINIFYKEY换成自己申请的key
使用时需要指定要压缩的文件夹
ruby tinypng.rb images
压缩后会直接覆盖原有的图片，压缩前请自行备份原图
压缩失败的图片会保存在ARGV[0]_Failure文件夹下
=end
require 'fileutils'
require 'tinify'
#tinyPNG的key,https://tinypng.com/developers
TINIFYKEY = ""
Tinify.key = TINIFYKEY
TINIPNGFAILPATH = `pwd`.chomp + "/" + ARGV[0] + "_Failure/"
#创建一个保存压缩失败图片的文件夹
def createFilurePath
if !File.directory? TINIPNGFAILPATH
Dir.mkdir TINIPNGFAILPATH
end
end
#调用tinypng的API进行图片压缩
def tinify(imgPath, imgName)
puts "#{imgName}开始压缩"
begin
source = Tinify.from_file imgPath
source.to_file imgPath
rescue
createFilurePath
p = `pwd`.chomp + "/" + imgPath
copyP = TINIPNGFAILPATH + imgName
FileUtils.cp p, copyP
puts "#{imgName}压缩失败 #{$!}"
end
end
def tinifyImage(path)
Dir.foreach path do |entry|
if entry == "." || entry == ".." || entry == ".DS_Store" #如果是这三个文件直接跳过
next
end
p = "#{path}/#{entry}" #文件的路径
if File.file? p
if (p.end_with? ".png") || (p.end_with? ".jpg") #tinify只能压缩png和jpg格式的图片
tinify p, entry
end
end
end
end
if ARGV[0]
tinifyImage ARGV[0]
else
puts "请指定文件夹"
end
