var tinyPngWebpackPlugin = require('tinypng-webpack-plugin');

    //in your webpack plugins array
    module.exports = {
      plugins: [
          new tinyPngWebpackPlugin({
              key:"your tinyPNG key"
          })
      ]
    }

new tinyPngWebpackPlugin({
    key:"your tinyPNG key",//can be Array, eg:['your key 1','your key 2'....]
    ext: ['png', 'jpeg', 'jpg'],//img ext name
    proxy:'http://user:[email protected]:8080'//http proxy,eg:如果你来自**，同时拥有shadowsocks，翻墙默认配置为 http:127.0.0.1:1080 即可。（注，该参数因为需要超时断开连接的原因，导致最后会延迟执行一会webpack。但相对于国内网络环境，用此参数还是非常划算的，测试原有两张图片，无此参数耗时2000ms+，有此参数耗时1000ms+节约近半。）
})

    {
        key:'',
        ext: ['png', 'jpeg', 'jpg'],
        proxy:''
    }