diff --git a/resources/assets/build/webpack.config.optimize.js b/resources/assets/build/webpack.config.optimize.js
index 22fc571..bec075c 100644
--- a/resources/assets/build/webpack.config.optimize.js
+++ b/resources/assets/build/webpack.config.optimize.js
@@ -9,7 +9,7 @@ const config = require('./config');
 module.exports = {
   plugins: [
     new ImageminPlugin({
-      optipng: { optimizationLevel: 7 },
+      optipng: { optimizationLevel: 2 },
       gifsicle: { optimizationLevel: 3 },
       pngquant: { quality: '65-90', speed: 4 },
       svgo: {