diff --git a/backend/main.py b/backend/main.py
index 689ebb8..d93978c 100644
--- a/backend/main.py
+++ b/backend/main.py
@@ -406,7 +406,7 @@ async def serve_media(path: str, request: _Request):
         raise _HE(404, "Nicht gefunden.")
     return _media_response(filepath)
 
-APP_VER = "958"  # muss mit APP_VER in app.js übereinstimmen
+APP_VER = "959"  # muss mit APP_VER in app.js übereinstimmen
 
 @app.get("/.well-known/assetlinks.json")
 async def assetlinks():
diff --git a/backend/static/img/landing/alvan-nee.jpg b/backend/static/img/landing/alvan-nee.jpg
deleted file mode 100644
index de2e07d..0000000
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diff --git a/backend/static/img/landing/alvan-nee.webp b/backend/static/img/landing/alvan-nee.webp
new file mode 100644
index 0000000..cf98a6d
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diff --git a/backend/static/img/landing/baptist-standaert.jpg b/backend/static/img/landing/baptist-standaert.jpg
deleted file mode 100644
index 36c1f14..0000000
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diff --git a/backend/static/img/landing/baptist-standaert.webp b/backend/static/img/landing/baptist-standaert.webp
new file mode 100644
index 0000000..509adb7
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diff --git a/backend/static/img/landing/chewy.jpg b/backend/static/img/landing/chewy.jpg
deleted file mode 100644
index a87c08b..0000000
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diff --git a/backend/static/img/landing/chewy.webp b/backend/static/img/landing/chewy.webp
new file mode 100644
index 0000000..7d439e6
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diff --git a/backend/static/img/landing/eric-ward.jpg b/backend/static/img/landing/eric-ward.jpg
deleted file mode 100644
index 3df44a8..0000000
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diff --git a/backend/static/img/landing/eric-ward.webp b/backend/static/img/landing/eric-ward.webp
new file mode 100644
index 0000000..c7aa36c
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diff --git a/backend/static/img/landing/nicholas-brownlow.jpg b/backend/static/img/landing/nicholas-brownlow.jpg
deleted file mode 100644
index c184f6c..0000000
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diff --git a/backend/static/img/landing/nicholas-brownlow.webp b/backend/static/img/landing/nicholas-brownlow.webp
new file mode 100644
index 0000000..9393209
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diff --git a/backend/static/img/landing/tamas-pap.jpg b/backend/static/img/landing/tamas-pap.jpg
deleted file mode 100644
index 7a47b34..0000000
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diff --git a/backend/static/img/landing/tamas-pap.webp b/backend/static/img/landing/tamas-pap.webp
new file mode 100644
index 0000000..21142c0
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diff --git a/backend/static/img/landing/wade-austin-ellis.jpg b/backend/static/img/landing/wade-austin-ellis.jpg
deleted file mode 100644
index b8fdeaf..0000000
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diff --git a/backend/static/img/landing/wade-austin-ellis.webp b/backend/static/img/landing/wade-austin-ellis.webp
new file mode 100644
index 0000000..ba13449
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diff --git a/backend/static/js/app.js b/backend/static/js/app.js
index e3ca9fe..0b6a093 100644
--- a/backend/static/js/app.js
+++ b/backend/static/js/app.js
@@ -3,7 +3,7 @@
    Router, State-Management, Navigation, Initialisierung.
    ============================================================ */
 
-const APP_VER     = '958'; // ← bei jedem Deploy mit Frontend-Änderungen erhöhen
+const APP_VER     = '959'; // ← bei jedem Deploy mit Frontend-Änderungen erhöhen
 const APP_VERSION = '1.5.1'; // ← semantische Version, wird bei make release gesetzt
 const IS_STAGING  = location.hostname === 'staging.banyaro.app';
 // Cache-Bust-Parameter nach Update-Reload sofort entfernen
diff --git a/backend/static/landing.html b/backend/static/landing.html
index c7939a0..037edae 100644
--- a/backend/static/landing.html
+++ b/backend/static/landing.html
@@ -831,7 +831,7 @@
 <!-- Emotionaler Split: Eric Ward -->
 <div style="display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));min-height:420px;overflow:hidden">
   <div style="position:relative;min-height:300px">
-    <img src="/img/landing/eric-ward.jpg" alt="Hundebesitzer umarmt seinen Golden Retriever"
+    <img src="/img/landing/eric-ward.webp" alt="Hundebesitzer umarmt seinen Golden Retriever"
          loading="lazy"
          style="position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block">
     <span class="photo-credit">© Eric Ward · Unsplash</span>
@@ -853,7 +853,7 @@
 
 <!-- Demo-Video -->
 <section id="demo" style="position:relative;background:#1a1a1a;padding:64px 20px;text-align:center;overflow:hidden">
-  <img src="/img/landing/baptist-standaert.jpg" alt=""
+  <img src="/img/landing/baptist-standaert.webp" alt=""
        loading="lazy" aria-hidden="true"
        style="position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center 20%;opacity:0.15;filter:grayscale(50%)">
   <span class="photo-credit" style="position:absolute;top:7px;right:9px">© Baptist Standaert · Unsplash</span>
@@ -1023,19 +1023,19 @@
 <section style="padding:0;overflow:hidden">
   <div class="photo-strip">
     <div class="photo-strip-item">
-      <img src="/img/landing/alvan-nee.jpg" alt="Zwei Hunde laufen einen Waldweg entlang" loading="lazy">
+      <img src="/img/landing/alvan-nee.webp" alt="Zwei Hunde laufen einen Waldweg entlang" loading="lazy">
       <span class="photo-credit">© Alvan Nee · Unsplash</span>
     </div>
     <div class="photo-strip-item">
-      <img src="/img/landing/nicholas-brownlow.jpg" alt="Frau gibt ihrem Golden Retriever einen Kuss" loading="lazy">
+      <img src="/img/landing/nicholas-brownlow.webp" alt="Frau gibt ihrem Golden Retriever einen Kuss" loading="lazy">
       <span class="photo-credit">© Nicholas Brownlow · Unsplash</span>
     </div>
     <div class="photo-strip-item">
-      <img src="/img/landing/wade-austin-ellis.jpg" alt="Frau mit Labrador auf der Wiese" loading="lazy">
+      <img src="/img/landing/wade-austin-ellis.webp" alt="Frau mit Labrador auf der Wiese" loading="lazy">
       <span class="photo-credit">© Wade Austin Ellis · Unsplash</span>
     </div>
     <div class="photo-strip-item">
-      <img src="/img/landing/tamas-pap.jpg" alt="Frau lacht während ihr Hund sie abschleckt" loading="lazy">
+      <img src="/img/landing/tamas-pap.webp" alt="Frau lacht während ihr Hund sie abschleckt" loading="lazy">
       <span class="photo-credit">© Tamas Pap · Unsplash</span>
     </div>
   </div>
@@ -1158,7 +1158,7 @@
 <!-- Sektion C: Für Welpenkäufer -->
 <section id="welpen" style="background: white;">
   <div style="position:relative;height:280px;overflow:hidden">
-    <img src="/img/landing/chewy.jpg" alt="Pärchen mit Hund aus dem Tierheim" loading="lazy"
+    <img src="/img/landing/chewy.webp" alt="Pärchen mit Hund aus dem Tierheim" loading="lazy"
          style="width:100%;height:100%;object-fit:cover;object-position:center 40%">
     <div style="position:absolute;inset:0;background:linear-gradient(to bottom,rgba(0,0,0,.1),rgba(0,0,0,.55))"></div>
     <span class="photo-credit">© Chewy · Unsplash</span>
diff --git a/backend/static/sw.js b/backend/static/sw.js
index 0fd300d..530c224 100644
--- a/backend/static/sw.js
+++ b/backend/static/sw.js
@@ -3,7 +3,7 @@
    Offline-Cache + Push Notifications + Tile-Cache
    ============================================================ */
 
-const CACHE_VERSION = 'by-v958';
+const CACHE_VERSION = 'by-v959';
 const CACHE_STATIC  = `${CACHE_VERSION}-static`;
 const CACHE_TILES   = 'ban-yaro-tiles-v1';  // bleibt über SW-Updates erhalten
 const CACHE_API     = 'ban-yaro-api-v1';    // API-Response-Cache