diff --git a/modules/nextcloud.nix b/modules/nextcloud.nix
index b775c51..94dc1e6 100644
--- a/modules/nextcloud.nix
+++ b/modules/nextcloud.nix
@@ -5,37 +5,7 @@ let
 in
 with lib;
 {
-  # security.acme = {
-  #   acceptTerms = true;
-  #   # defaults = {
-  #   #   email = "chris@tfcconnection.org";
-  #   #   # dnsProvider = "cloudflare";
-  #   #   # location of your CLOUDFLARE_DNS_API_TOKEN=[value]
-  #   #   # https://www.freedesktop.org/software/systemd/man/latest/systemd.exec.html#EnvironmentFile=
-  #   #   environmentFile = "/REPLACE/WITH/YOUR/PATH";
-  #   # };
-  # };
   services = {
-    # caddy = {
-    #   virtualHosts = {
-    #     "${dn}".extraConfig = ''
-	  #       encode gzip
-	  #       reverse_proxy localhost:8080
-	        
-    #       redir /.well-known/carddav /remote.php/dav 301
-    #       redir /.well-known/caldav /remote.php/dav 301
-    #       header {
-    #               Strict-Transport-Security "max-age=15768000; includeSubDomains; reload;"
-    #               Access-Control-Allow-Origin *
-    #               Referrer-Policy no-referrer-when-downgrade
-    #       }
-    #       redir /.well-known/oidc-configuration /apps/oidc/openid-configuration 301
-    #       handle_path /whiteboard/* {
-    #           reverse_proxy http://127.0.0.1:3002
-    #       }
-    #   '';
-    #   };
-    # };
     nextcloud = {
       enable = true;
       hostName = dn;
@@ -71,6 +41,25 @@ with lib;
         trusted_domains = [ dn ];
         trusted_proxies = [ "127.0.0.1" "24.225.22.143" "0.0.0.0" ];
         maintenance_window_start = 1;
+        preview_libreoffice_path = "${pkgs.libreoffice}/bin/libreoffice";
+        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\HEIC"
+          "OC\Preview\SVG"
+          "OC\Preview\MSOfficeDoc"
+          "OC\Preview\MSOffice2007"
+          "OC\Preview\Movie"
+          "OC\Preview\Font"
+          "OC\Preview\TXT"
+          "OC\Preview\XBitmap"
+        ];
       };
       config = {
         dbtype = "pgsql";
@@ -82,7 +71,10 @@ with lib;
         package = unstable.nextcloud-notify_push;
       };
       # Suggested by Nextcloud's health check.
-      phpOptions."opcache.interned_strings_buffer" = "16";
+      phpOptions = {
+        "opcache.interned_strings_buffer" = "32";
+        "opcache.buffer" = "256";
+      };
     };
   };
   services.nginx.virtualHosts.${dn} = {