diff --git a/.env.example b/.env.example
index 199abcd..e2da8e5 100644
--- a/.env.example
+++ b/.env.example
@@ -5,7 +5,7 @@ CAMERA_cam2=http://IP:PORT/pfad
 CAMERA_cam3=http://IP:PORT/pfad
 
 # Optional: Konfigurations-URL pro Kamera (Button "Setup" im Frontend), z.B. ESP32-CAM Auflösung
-#SETUP_cam1=http://IP/control?var=framesize&val=11
+#SETUP_cam2=http://IP/control?var=framesize&val=11
 
 PORT=8000
 # Optional: Login (nur sinnvoll mit HTTPS in Zoraxy)
diff --git a/frontend.html b/frontend.html
index cb10bd0..f22c9c9 100644
--- a/frontend.html
+++ b/frontend.html
@@ -61,6 +61,7 @@ main{padding:22px;max-width:1800px;margin:0 auto}
 <header>
   <h1><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M23 7l-7 5 7 5V7z"/><rect x="1" y="5" width="15" height="14" rx="2"/></svg><a id="home">Webcams</a></h1>
   <span class="sp"></span>
+  <button class="btn" id="setupAll" hidden><span>Setup alle</span></button>
   <span class="pill" id="count"></span>
   <span class="pill" id="clock"></span>
 </header>
@@ -72,6 +73,7 @@ const app = document.getElementById("app");
 document.getElementById("home").href = ROOT;
 const banner = document.getElementById("banner");
 const tiles = {};
+let setupNames = [];
 let order = [], visible = true;
 
 const el = (tag, cls, text) => {
@@ -88,6 +90,15 @@ const ICONS = {
 };
 const icon = k => { const s = document.createElementNS("http://www.w3.org/2000/svg", "svg"); s.setAttribute("viewBox", "0 0 24 24"); s.setAttribute("fill", "none"); s.setAttribute("stroke", "currentColor"); s.setAttribute("stroke-width", "2"); s.setAttribute("stroke-linecap", "round"); s.setAttribute("stroke-linejoin", "round"); s.innerHTML = ICONS[k]; return s; };
 const btn = (label, ic, fn, cls) => { const b = el("button", "btn" + (cls ? " " + cls : "")); b.title = label; b.append(icon(ic), el("span", "", label)); b.onclick = fn; return b; };
+const setupAllBtn = document.getElementById("setupAll");
+setupAllBtn.prepend(icon("cog"));
+setupAllBtn.onclick = async () => {
+  setupAllBtn.disabled = true;
+  const label = setupAllBtn.querySelector("span");
+  const res = await Promise.all(setupNames.map(runSetup));
+  label.textContent = res.every(Boolean) ? "Gesendet ✓" : "Fehler ✗";
+  setTimeout(() => { label.textContent = "Setup alle"; setupAllBtn.disabled = false; }, 2500);
+};
 
 // mode: "live" = MJPEG-Stream, "thumb" = Einzelbild im Intervall
 function makeTile(name, mode, hasSetup) {
@@ -115,13 +126,7 @@ function makeTile(name, mode, hasSetup) {
     const setup = btn("Setup", "cog", async () => {
       setup.disabled = true;
       const label = setup.querySelector("span");
-      try {
-        const r = await fetch(ROOT + name + "/setup", { method: "POST" });
-        if (!r.ok) throw new Error(r.status);
-        label.textContent = "Gesendet ✓";
-      } catch (e) {
-        label.textContent = "Fehler ✗";
-      }
+      label.textContent = (await runSetup(name)) ? "Gesendet ✓" : "Fehler ✗";
       setTimeout(() => { label.textContent = "Setup"; setup.disabled = false; }, 2500);
     }, "alt");
     actions.append(setup);
@@ -140,6 +145,18 @@ function makeTile(name, mode, hasSetup) {
   return t;
 }
 
+async function runSetup(name) {
+  try {
+    const r = await fetch(ROOT + name + "/setup", { method: "POST" });
+    if (!r.ok) throw new Error(r.status);
+    // Kamera startet den Stream mit neuer Auflösung; Bild kurz danach neu laden
+    setTimeout(() => tiles[name] && connect(tiles[name]), 800);
+    return true;
+  } catch (e) {
+    return false;
+  }
+}
+
 function connect(o) {
   clearTimeout(o.retry);
   clearInterval(o.timer);
@@ -192,6 +209,8 @@ async function poll() {
     if (names.join() !== order.join()) build(data.cameras);
     data.cameras.forEach(c => setOnline(tiles[c.name], c.online));
     const n = data.cameras.filter(c => c.online).length;
+    setupNames = data.cameras.filter(c => c.setup).map(c => c.name);
+    setupAllBtn.hidden = !setupNames.length;
     document.getElementById("count").innerHTML = "<b>" + n + "</b> / " + data.cameras.length + " online";
   } catch (e) {
     banner.style.display = "block";