diff --git a/site/config/config.php b/site/config/config.php
index e110409..fc20805 100644
--- a/site/config/config.php
+++ b/site/config/config.php
@@ -30,7 +30,11 @@ return [
     // Thumbnails and srcsets presets
     'thumbs' => [
         'srcsets' => [
-            'default' => [500, 1000, 1500]
+            'default' => [
+                '640w' => ['width' => 640, 'quality' => 80],
+                '1280w' => ['width' => 1280, 'quality' => 80],
+                '1920w' => ['width' => 1920, 'quality' => 80]
+            ]
         ]
     ]
 ];