diff --git a/app/components/instagram-feed.php b/app/components/instagram-feed.php
index f1c8014..1ce175a 100644
--- a/app/components/instagram-feed.php
+++ b/app/components/instagram-feed.php
@@ -23,7 +23,7 @@ $maxPosts = (int) config('instagram.max_posts', 9);
                         <a class="instagram__link" href="<?= e($post['url']) ?>" rel="noopener">
                             <img src="<?= e(asset($post['image'])) ?>"
                                 alt="<?= e($post['alt'] ?? 'Instagram-Beitrag des TSV 08 Kulmbach') ?>"
-                                width="640" height="640" loading="lazy" decoding="async">
+                                width="640" height="800" loading="lazy" decoding="async">
 <?php if (!empty($post['is_video'])): ?>
                             <span class="instagram__badge" aria-hidden="true">▶</span>
 <?php endif; ?>
diff --git a/bin/instagram-sync.php b/bin/instagram-sync.php
index 28c1fda..31ecc71 100644
--- a/bin/instagram-sync.php
+++ b/bin/instagram-sync.php
@@ -146,7 +146,7 @@ if ($posts === []) {
     $fail('Keine Posts ermittelbar (Instagram blockt vermutlich die Server-IP oder hat die Struktur geändert)');
 }
 
-// --- Bilder lokal laden, auf 640px-Quadrat bringen ---
+// --- Bilder lokal laden, auf Instagram-Portrait 4:5 (640x800) bringen ---
 if (!is_dir($imgDir)) {
     mkdir($imgDir, 0755, true);
 }
@@ -167,9 +167,16 @@ foreach ($posts as $post) {
         }
         $w = imagesx($src);
         $h = imagesy($src);
-        $side = min($w, $h);
-        $out = imagecreatetruecolor(640, 640);
-        imagecopyresampled($out, $src, 0, 0, (int) (($w - $side) / 2), (int) (($h - $side) / 2), 640, 640, $side, $side);
+        // Mittiger Crop auf 4:5 (Instagram-Portrait), dann auf 640x800 skalieren.
+        if ($w / $h > 4 / 5) {
+            $cropH = $h;
+            $cropW = (int) round($h * 4 / 5);
+        } else {
+            $cropW = $w;
+            $cropH = (int) round($w * 5 / 4);
+        }
+        $out = imagecreatetruecolor(640, 800);
+        imagecopyresampled($out, $src, 0, 0, (int) (($w - $cropW) / 2), (int) (($h - $cropH) / 2), 640, 800, $cropW, $cropH);
         imagejpeg($out, $file, 80);
     }
 
diff --git a/public/assets/css/components.css b/public/assets/css/components.css
index 7a252a1..b2182ad 100644
--- a/public/assets/css/components.css
+++ b/public/assets/css/components.css
@@ -107,7 +107,8 @@
 .instagram__link img {
     width: 100%;
     height: auto;
-    aspect-ratio: 1;
+    /* Instagram-Portrait 1080x1350 */
+    aspect-ratio: 4 / 5;
     object-fit: cover;
     transition: transform var(--transition);
 }