diff --git a/modules/nixos/nextcloud.nix b/modules/nixos/nextcloud.nix
index 2d6a6f7..8990892 100644
--- a/modules/nixos/nextcloud.nix
+++ b/modules/nixos/nextcloud.nix
@@ -18,6 +18,21 @@
     maxUploadSize = "24G";
     caching.apcu = true;
     datadir = "/mnt/raid/nextcloud";
+
+    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 preview of HEIC/HEIF images (others are default)
+    ];
+
     config = {
       trustedProxies = [ "172.23.171.70" "baldur.zto" ];
       extraTrustedDomains = [ config.services.nextcloud.hostName "freya.zto" ];