diff --git a/modules/nextcloud.nix b/modules/nextcloud.nix
index dbca10c..9d4ab74 100644
--- a/modules/nextcloud.nix
+++ b/modules/nextcloud.nix
@@ -29,6 +29,22 @@ in
       };
       # postgres database is configured automatically
       database.createLocally = true;
+
+      # enable HEIC image preview
+      extraOptions.enabledPreviewProviders = [
+        "OC\\Preview\\BMP"
+        "OC\\Preview\\GIF"
+        "OC\\Preview\\JPEG"
+        "OC\\Preview\\Krita"
+        "OC\\Preview\\MarkDown"
+        "OC\\Preview\\MP3"
+        "OC\\Preview\\OpenDocument"
+        "OC\\Preview\\PNG"
+        "OC\\Preview\\TXT"
+        "OC\\Preview\\XBitmap"
+        "OC\\Preview\\HEIC"
+      ];
+
     };
 
     # Enable ACME and force SSL