diff --git a/src/lib/protocols.ts b/src/lib/protocols.ts
index a5946ee..3e890fb 100644
--- a/src/lib/protocols.ts
+++ b/src/lib/protocols.ts
@@ -3,7 +3,7 @@
  */
 
 import { saveProtocol } from './db';
-import type { Device, Measurement, Protocol } from './types';
+import type { Device, Measurement, Protocol, SavedScan } from './types';
 
 /** Eindeutige ID erzeugen */
 export function uid(): string {
@@ -73,6 +73,30 @@ export function renameDevice(protocol: Protocol, clientId: string, name: string)
   if (d) d.customName = name.trim() || undefined;
 }
 
+/**
+ * Den aktuellen Geräte-Stand als benannten Scan-Snapshot einfrieren.
+ * Der Snapshot ist eine tiefe Kopie — spätere Re-Scans verändern ihn nicht.
+ */
+export function saveScan(protocol: Protocol, name: string): SavedScan {
+  const scan: SavedScan = {
+    id: uid(),
+    name: name.trim() || new Date().toLocaleString('de-DE'),
+    createdAt: Date.now(),
+    subnet: protocol.subnet,
+    // JSON-Roundtrip löst den Svelte-State-Proxy und friert die Daten ein
+    devices: JSON.parse(JSON.stringify(protocol.devices)) as Device[],
+  };
+  (protocol.savedScans ??= []).push(scan);
+  return scan;
+}
+
+/** Gespeicherten Scan-Snapshot löschen */
+export function deleteScan(protocol: Protocol, scanId: string): void {
+  if (protocol.savedScans) {
+    protocol.savedScans = protocol.savedScans.filter((s) => s.id !== scanId);
+  }
+}
+
 /** Messung zum Protokoll hinzufügen */
 export function addMeasurement(
   protocol: Protocol,
diff --git a/src/routes/protokoll/[id]/+page.svelte b/src/routes/protokoll/[id]/+page.svelte
index ce3c4c6..2c7433f 100644
--- a/src/routes/protokoll/[id]/+page.svelte
+++ b/src/routes/protokoll/[id]/+page.svelte
@@ -11,7 +11,14 @@
   import TextPromptDialog from '$lib/components/TextPromptDialog.svelte';
   import ConfirmDialog from '$lib/components/ConfirmDialog.svelte';
   import { getProtocol, saveProtocol, deleteProtocol } from '$lib/db';
-  import { addMeasurement, upsertDevice, toggleFavorite, renameDevice } from '$lib/protocols';
+  import {
+    addMeasurement,
+    upsertDevice,
+    toggleFavorite,
+    renameDevice,
+    saveScan,
+    deleteScan,
+  } from '$lib/protocols';
   import { sync } from '$lib/sync.svelte';
   import { toast } from '$lib/toast.svelte';
   import { pushOverlay } from '$lib/overlay.svelte';
@@ -26,6 +33,9 @@
   let saving = $state(false);
   let renameTarget = $state<Device | null>(null);
   let confirmDelete = $state(false);
+  let saveScanOpen = $state(false);
+  let expandedScan = $state<string | null>(null);
+  let deleteScanId = $state<string | null>(null);
 
   let appStateListener: PluginListenerHandle | null = null;
 
@@ -162,6 +172,39 @@
     goto('/auftraege/');
   }
 
+  /** Datum + Uhrzeit kurz */
+  function fmtDateTime(ts: number): string {
+    return new Date(ts).toLocaleString('de-DE', {
+      day: '2-digit',
+      month: '2-digit',
+      hour: '2-digit',
+      minute: '2-digit',
+    });
+  }
+
+  /** Vorschlag für den Scan-Namen */
+  function defaultScanName(): string {
+    return 'Scan ' + fmtDateTime(Date.now());
+  }
+
+  /** Aktuellen Geräte-Stand als Snapshot speichern */
+  function doSaveScan(name: string) {
+    if (protocol) {
+      saveScan(protocol, name);
+      void persist();
+      toast.show('Scan gespeichert', 'success');
+    }
+    saveScanOpen = false;
+  }
+
+  function doDeleteScan() {
+    if (protocol && deleteScanId) {
+      deleteScan(protocol, deleteScanId);
+      void persist();
+    }
+    deleteScanId = null;
+  }
+
   function measurementsFor(deviceClientId: string) {
     return protocol?.measurements.filter((m) => m.deviceClientId === deviceClientId) ?? [];
   }
@@ -246,9 +289,16 @@
 
     <!-- Geräte -->
     <section class="px-3 pb-3">
-      <h2 class="mb-2 text-sm font-semibold text-zinc-300">
-        Geräte ({protocol.devices.length})
-      </h2>
+      <div class="mb-2 flex items-center justify-between">
+        <h2 class="text-sm font-semibold text-zinc-300">
+          Geräte ({protocol.devices.length})
+        </h2>
+        {#if protocol.devices.length > 0}
+          <button class="text-xs text-sky-300 active:text-sky-200" onclick={() => (saveScanOpen = true)}>
+            Scan speichern
+          </button>
+        {/if}
+      </div>
       {#if protocol.devices.length === 0}
         <p class="text-xs text-zinc-500">
           Noch keine Geräte — IP-Scanner ausführen, um das Netz zu erfassen.
@@ -266,6 +316,45 @@
       {/each}
     </section>
 
+    <!-- Gespeicherte Scans -->
+    {#if protocol.savedScans && protocol.savedScans.length > 0}
+      <section class="px-3 pb-3">
+        <h2 class="mb-2 text-sm font-semibold text-zinc-300">Gespeicherte Scans</h2>
+        {#each protocol.savedScans as scan (scan.id)}
+          <div class="mb-1.5 rounded-lg bg-zinc-900">
+            <button
+              class="flex w-full items-center justify-between gap-2 p-2.5 text-left"
+              onclick={() => (expandedScan = expandedScan === scan.id ? null : scan.id)}
+            >
+              <div class="min-w-0">
+                <div class="truncate text-sm font-medium">{scan.name}</div>
+                <div class="text-[11px] text-zinc-500">
+                  {scan.devices.length} Geräte · {scan.subnet || '—'} · {fmtDateTime(scan.createdAt)}
+                </div>
+              </div>
+              <Icons.ChevronDown
+                size={16}
+                class="shrink-0 text-zinc-500 {expandedScan === scan.id ? 'rotate-180' : ''}"
+              />
+            </button>
+            {#if expandedScan === scan.id}
+              <div class="border-t border-zinc-800 p-2.5">
+                {#each scan.devices as d (d.clientId)}
+                  <DeviceCard device={d} />
+                {/each}
+                <button
+                  class="mt-1 text-xs text-red-400 underline"
+                  onclick={() => (deleteScanId = scan.id)}
+                >
+                  Scan löschen
+                </button>
+              </div>
+            {/if}
+          </div>
+        {/each}
+      </section>
+    {/if}
+
     <div class="px-3">
       <button class="text-xs text-red-400 underline" onclick={() => (confirmDelete = true)}>
         Protokoll löschen
@@ -315,6 +404,28 @@
       oncancel={() => (confirmDelete = false)}
     />
   {/if}
+
+  {#if saveScanOpen}
+    <TextPromptDialog
+      title="Scan speichern"
+      label="Name des Scans"
+      value={defaultScanName()}
+      placeholder="z.B. Erdgeschoss"
+      onsubmit={doSaveScan}
+      oncancel={() => (saveScanOpen = false)}
+    />
+  {/if}
+
+  {#if deleteScanId}
+    <ConfirmDialog
+      title="Scan löschen?"
+      message="Der gespeicherte Scan-Snapshot wird entfernt."
+      confirmLabel="Löschen"
+      danger
+      onconfirm={doDeleteScan}
+      oncancel={() => (deleteScanId = null)}
+    />
+  {/if}
 {:else}
   <div class="flex min-h-screen items-center justify-center text-zinc-500">Lädt …</div>
 {/if}