diff --git a/atlas.json b/atlas.json
index e51d78ee..8de7bdbf 100644
--- a/atlas.json
+++ b/atlas.json
@@ -45,7 +45,7 @@
       "epubcheck": true,
       "syntaxhighlighting": true,
       "show_comments": false,
-      "downsample_images": false,
+      "downsample_images": true,
       "mathmlreplacement": false
     },
     "mobi": {