diff --git a/systems/LoutreOS/config-overviewer.py b/systems/LoutreOS/config-overviewer.py
new file mode 100644
index 0000000..67332a3
--- /dev/null
+++ b/systems/LoutreOS/config-overviewer.py
@@ -0,0 +1,41 @@
+from .observer import JSObserver
+
+global escape
+from cgi import escape
+def signFilter(poi):
+    if poi['id'] == 'Sign' or poi['id'] == 'minecraft:sign':
+        return "<pre>" + "\n".join(map(escape, [poi['Text1'], poi['Text2'], poi['Text3'], poi['Text4']])) + "</pre>"
+
+global json
+import json
+def petFilter(poi):
+    if "CustomName" in poi:
+        custom_name = json.loads(poi['CustomName'])
+        if "text" in custom_name:
+            return custom_name["text"]
+
+processes = 2
+
+worlds["My world"] = "/var/lib/minecraft/world"
+
+renders["Vue normale"] = {
+    "world": "My world",
+    "title": "Vue normale",
+    "texturepath": "@CLIENT_JAR@",
+    "rendermode": smooth_lighting,
+    'markers': [dict(name="All signs", filterFunction=signFilter),
+                dict(name="Pets", filterFunction=petFilter, icon="icons/marker_cat.png", createInfoWindow=False, checked=True)],
+}
+
+cave_rendermode = [Base(), EdgeLines(), Cave(only_lit=True), DepthTinting()]
+
+renders["Grottes"] = {
+    "world": "My world",
+    "title": "Grottes",
+    "texturepath": "@CLIENT_JAR@",
+    "rendermode": cave_rendermode,
+}
+
+outputdir = "/var/www/minecraft-overviewer"
+
+observer = JSObserver(outputdir=outputdir)
diff --git a/systems/LoutreOS/services.nix b/systems/LoutreOS/services.nix
index 5b9cf77..7fdea08 100644
--- a/systems/LoutreOS/services.nix
+++ b/systems/LoutreOS/services.nix
@@ -263,6 +263,36 @@ in
     };
   };
 
+  systemd.services.minecraft-overviewer =
+  let
+    clientJar = pkgs.fetchurl {
+      url = "https://overviewer.org/textures/1.14";
+      sha256 = "0fij9wac7vj6h0kd3mfhqpn0w9gl8pbs9vs9s085zajm0szpr44k";
+      name = "client.jar";
+    };
+    configFile = pkgs.runCommand "overviewer-config" { CLIENT_JAR = clientJar; } ''
+      substitute ${./config-overviewer.py} $out \
+        --subst-var CLIENT_JAR
+    '';
+  in
+  {
+    script = ''
+      ${pkgs.minecraft-overviewer}/bin/overviewer.py --config ${configFile}
+      ${pkgs.minecraft-overviewer}/bin/overviewer.py --config ${configFile} --genpoi
+    '';
+    serviceConfig = {
+      User = "nginx";
+      Group = "nginx";
+    };
+  };
+
+  systemd.timers.minecraft-overviewer = {
+    wantedBy = [ "multi-user.target" ];
+    timerConfig = {
+      OnCalendar = "*-*-* 04:00:00";
+    };
+  };
+
   users.groups.acme.members = [ "matrix-synapse" ];
 
   security.pam.services.sshd.text = pkgs.lib.mkDefault( pkgs.lib.mkAfter "session optional ${pkgs.pam}/lib/security/pam_exec.so seteuid ${login_mail_alert}/bin/mail_alert.sh" );