diff --git a/app/api/households/[id]/export/route.ts b/app/api/households/[id]/export/route.ts
new file mode 100644
index 0000000..62c241c
--- /dev/null
+++ b/app/api/households/[id]/export/route.ts
@@ -0,0 +1,71 @@
+import { NextRequest, NextResponse } from "next/server";
+import { getDb } from "@/lib/db";
+import { getViewer } from "@/lib/viewer";
+
+/**
+ * Haushalts-Export als JSON (eigene Daten sichern/mitnehmen).
+ * Server-Admin: jeder Haushalt. Haushalts-Admin: nur der eigene.
+ * Enthält keine Passwort-Hashes, Secrets oder fremde Haushalte.
+ */
+export async function GET(req: NextRequest, { params }: { params: Promise<{ id: string }> }) {
+  const viewer = await getViewer();
+  if (!viewer) return NextResponse.json({ error: "unauthorized" }, { status: 401 });
+  const { id } = await params;
+  const numId = Number(id);
+  if (!Number.isInteger(numId)) return NextResponse.json({ error: "not found" }, { status: 404 });
+
+  const isServerAdmin = viewer.role === "admin";
+  const isOwnHouseholdAdmin =
+    !isServerAdmin && viewer.householdId === numId && viewer.householdRole === "admin";
+  if (!isServerAdmin && !isOwnHouseholdAdmin) {
+    return NextResponse.json({ error: "forbidden" }, { status: 403 });
+  }
+
+  const db = getDb();
+  const household = await db.household.findUnique({
+    where: { id: numId },
+    include: {
+      members: { include: { user: { select: { id: true, name: true, email: true, createdAt: true } } }, orderBy: { createdAt: "asc" } },
+      vouchers: { include: { rules: true, contacts: { include: { contact: true } } }, orderBy: { createdAt: "asc" } },
+    },
+  });
+  if (!household) return NextResponse.json({ error: "not found" }, { status: 404 });
+
+  const stamp = new Date().toISOString().slice(0, 10);
+  const body = {
+    export: "gutscheinnest-haushalt",
+    version: 1,
+    exportedAt: new Date().toISOString(),
+    household: { id: household.id, name: household.name },
+    mitglieder: household.members.map((m) => ({ name: m.user.name, email: m.user.email, rolle: m.role, seit: m.createdAt })),
+    gutscheine: household.vouchers.map((v) => ({
+      name: v.name,
+      anbieter: v.anbieter,
+      wertTyp: v.wertTyp,
+      wertCents: v.wertCents,
+      restCents: v.restCents,
+      prozentWert: v.prozentWert,
+      mindestbestellwertCents: v.mindestbestellwertCents,
+      ablaufdatum: v.ablaufdatum,
+      codeText: v.codeText,
+      kategorie: v.kategorie,
+      notiz: v.notiz,
+      shopUrl: v.shopUrl,
+      status: v.status,
+      angelegtVon: v.createdBy,
+      erinnerungstage: v.rules.map((r) => r.tageVorher),
+      kontakte: v.contacts.map((c) => ({
+        name: c.contact.name,
+        email: c.contact.email,
+        telegramChatId: c.contact.telegramChatId,
+      })),
+    })),
+  };
+  const safeName = household.name.toLowerCase().replace(/[^a-z0-9äöüß]+/gi, "-").replace(/^-+|-+$/g, "") || "haushalt";
+  return new NextResponse(JSON.stringify(body, null, 2), {
+    headers: {
+      "content-type": "application/json; charset=utf-8",
+      "content-disposition": `attachment; filename="gutscheine-${safeName}-${stamp}.json"`,
+    },
+  });
+}
diff --git a/app/settings/household-panel.tsx b/app/settings/household-panel.tsx
index 08431f0..39f8658 100644
--- a/app/settings/household-panel.tsx
+++ b/app/settings/household-panel.tsx
@@ -115,6 +115,18 @@ export function HouseholdPanel({ householdId, householdName, ownId, ownEmail }:
         )}
       </section>
 
+      <section className="rounded-card border border-line bg-white p-5">
+        <h2 className="text-[15px] font-semibold tracking-tight">Eigene Daten sichern</h2>
+        <p className="mt-1 text-[13px] text-muted">Lädt alle Gutscheine, Kontakte und Mitglieder dieses Haushalts als JSON-Datei herunter — ohne Passwörter oder Geheimnisse.</p>
+        <a
+          href={`/api/households/${householdId}/export`}
+          download
+          className="mt-3 inline-block rounded-field bg-brand-600 px-4 py-2.5 text-sm font-semibold text-white transition-colors hover:bg-brand-700"
+        >
+          Haushaltsdaten exportieren
+        </a>
+      </section>
+
       <section className="rounded-card border border-line bg-white p-5">
         <h2 className="text-[15px] font-semibold tracking-tight">Eigene E-Mail-Adresse</h2>
         <p className="mt-1 text-[13px] text-muted">Für die SSO-Verknüpfung nötig.</p>
diff --git a/app/settings/server-households.tsx b/app/settings/server-households.tsx
index 90fb2d3..60f8660 100644
--- a/app/settings/server-households.tsx
+++ b/app/settings/server-households.tsx
@@ -155,13 +155,23 @@ function HouseholdCard({
     <section className="rounded-card border border-line bg-white p-5">
       <div className="flex items-center justify-between gap-3">
         <h2 className="text-[15px] font-semibold tracking-tight">{household.name}</h2>
-        <button
-          type="button"
-          onClick={() => onDelete(household.id, household.name, household.gutscheineAnzahl, household.mitgliederAnzahl)}
-          className="shrink-0 rounded-lg px-2 py-1 text-[13px] font-medium text-muted hover:text-danger"
-        >
-          Haushalt auflösen
-        </button>
+        <span className="flex shrink-0 items-center gap-1">
+          <a
+            href={`/api/households/${household.id}/export`}
+            download
+            className="rounded-lg px-2 py-1 text-[13px] font-medium text-muted hover:text-brand-700"
+            title="Eigene Haushaltsdaten als JSON sichern"
+          >
+            Exportieren
+          </a>
+          <button
+            type="button"
+            onClick={() => onDelete(household.id, household.name, household.gutscheineAnzahl, household.mitgliederAnzahl)}
+            className="rounded-lg px-2 py-1 text-[13px] font-medium text-muted hover:text-danger"
+          >
+            Haushalt auflösen
+          </button>
+        </span>
       </div>
       <p className="mt-1 text-[13px] text-muted">
         {household.mitgliederAnzahl} Mitglied(er) · {household.gutscheineAnzahl} Gutschein(e) im gemeinsamen Bestand
diff --git a/next.config.ts b/next.config.ts
index a3c5d10..2e037b6 100644
--- a/next.config.ts
+++ b/next.config.ts
@@ -4,5 +4,22 @@ const nextConfig: NextConfig = {
   // Kein next/image im Einsatz (nur plain <img>); Optimizer deaktivieren,
   // damit der /_next/image-Endpunkt sharp gar nicht erst lädt.
   images: { unoptimized: true },
+  async headers() {
+    return [
+      {
+        source: "/:path*",
+        headers: [
+          // MIME-Sniffing verbieten (Bypässe bei Datei-Downloads erschweren)
+          { key: "X-Content-Type-Options", value: "nosniff" },
+          // Kein Einbetten in fremde Seiten (Clickjacking-Schutz)
+          { key: "X-Frame-Options", value: "DENY" },
+          // Referrer nur same-origin bzw. downgrade-sicher senden
+          { key: "Referrer-Policy", value: "strict-origin-when-cross-origin" },
+          // Browser-APIs einschränken, die die App nicht braucht
+          { key: "Permissions-Policy", value: "camera=(), microphone=(), geolocation=()" },
+        ],
+      },
+    ];
+  },
 };
 export default nextConfig;