diff --git a/atlas.json b/atlas.json
index 8ab2a08..fab7eef 100644
--- a/atlas.json
+++ b/atlas.json
@@ -50,7 +50,7 @@
       "epubcheck": true,
       "syntaxhighlighting": true,
       "show_comments": false,
-      "downsample_images": false,
+      "downsample_images": true,
       "mathmlreplacement": false
     },
     "mobi": {