diff --git a/media/articles/connections/database/mysql/db-connection-widget.png b/media/articles/connections/database/mysql/db-connection-widget.png
index d43a6e42b2..32934feba9 100644
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diff --git a/media/articles/connections/enterprise/azure-active-directory/waad-1.png b/media/articles/connections/enterprise/azure-active-directory/waad-1.png
index 17ffe17bcf..8cbe5ca70b 100644
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diff --git a/media/articles/connections/social/microsoft-account/ma-portal-3.png b/media/articles/connections/social/microsoft-account/ma-portal-3.png
index bb85f2a61d..3d5336e4c0 100644
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diff --git a/media/articles/connector/considerations-non-ad/opendj-attributes.png b/media/articles/connector/considerations-non-ad/opendj-attributes.png
index 5a605df0db..2d41593f2f 100644
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diff --git a/media/articles/server-apis/azure-mobile-services/wams-tutorial-5.png b/media/articles/server-apis/azure-mobile-services/wams-tutorial-5.png
index d0bd93ad69..89698a91a2 100644
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diff --git a/media/connections/open-id.png b/media/connections/open-id.png
index 1bd8a9732a..1398dd0132 100644
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diff --git a/media/connections/sharepoint.png b/media/connections/sharepoint.png
index 230a10e752..f56cc94881 100644
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diff --git a/media/landings/banner/twitter-card-iam.png b/media/landings/banner/twitter-card-iam.png
index 616ca35098..78727af4f0 100644
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diff --git a/media/landings/iam-what-is/iam-what-is.png b/media/landings/iam-what-is/iam-what-is.png
index d21e1cc1a7..6a7757dd12 100644
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diff --git a/media/landings/sso-how-it-works/diagram-single-sign-on.png b/media/landings/sso-how-it-works/diagram-single-sign-on.png
index 53a6e32feb..b9cf2f134a 100644
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diff --git a/package.json b/package.json
index 889dabd92e..7873df8139 100644
--- a/package.json
+++ b/package.json
@@ -5,11 +5,7 @@
   "author": "Auth0 Inc.",
   "devDependencies": {
     "commander": "^2.8.1",
-    "dotenv": "^1.2.0",
     "imagemin": "^4.0.0",
-    "imagemin-zopfli": "^4.1.0",
-    "lsr": "^1.0.0",
-    "tinify": "^1.1.1",
-    "zopflipng-bin": "^3.0.1"
+    "imagemin-optipng": "^4.3.0"
   }
 }
diff --git a/tools.js b/tools.js
index c52097d271..277b3c3ef5 100644
--- a/tools.js
+++ b/tools.js
@@ -1,7 +1,7 @@
 var program = require('commander');
 var fs = require('fs');
 var Imagemin = require('imagemin');
-var imageminZopfli = require('imagemin-zopfli');
+var imageminOptipng = require('imagemin-optipng');
 
 var redirectFilePath = './redirect-urls.json';
  var addRedirect = function(oldUrl, newUrl, callback) {
@@ -51,6 +51,7 @@ program.command('img')
     new Imagemin()
       .src('media/**/*.png')
       .dest('media')
+      .use(imageminOptipng({optimizationLevel: 3}))
       .run((err, files) => {
         if (err) {
           console.error(err);