diff --git a/modes/filebrowser.php b/modes/filebrowser.php
index 16796af..7bd1c26 100644
--- a/modes/filebrowser.php
+++ b/modes/filebrowser.php
@@ -3,7 +3,11 @@
 $paths = Access::getAllowedPaths();
 
 if (empty($_POST)) {
-    loadPicTemplate("templates/filebrowser.phtml", array("paths" => $paths));
+    $appConf = loadPicFile("conf/app.json");
+    loadPicTemplate("templates/filebrowser.phtml", array(
+        "paths" => $paths,
+        "imageSizes" => json_decode($appConf, true)["image_sizes"],
+    ));
     exit();
 }
 if (!isset($_POST["path"]) || !is_numeric($_POST["path"])) {
diff --git a/templates/filebrowser.phtml b/templates/filebrowser.phtml
index 432d25d..2ec894a 100644
--- a/templates/filebrowser.phtml
+++ b/templates/filebrowser.phtml
@@ -117,6 +117,10 @@ Keyboard<br>shortcuts
 }
 </script>
 
+<script type="application/json" id="image-sizes">
+<?php echo json_encode($imageSizes); ?>
+</script>
+
 <div style="display:none;">
 <script type="text/x-html-template" id="browser-directory-row-template">
 <tr class="dir-row">