diff --git a/docs/marketing/kapteins-daagbok-sharepic-portrait.png b/docs/marketing/kapteins-daagbok-sharepic-portrait.png
new file mode 100644
index 0000000..c4d58a6
Binary files /dev/null and b/docs/marketing/kapteins-daagbok-sharepic-portrait.png differ
diff --git a/docs/marketing/sharepic-portrait.html b/docs/marketing/sharepic-portrait.html
new file mode 100644
index 0000000..1177a6a
--- /dev/null
+++ b/docs/marketing/sharepic-portrait.html
@@ -0,0 +1,318 @@
+<!DOCTYPE html>
+<html lang="de">
+<head>
+  <meta charset="UTF-8" />
+  <title>Kapteins Daagbok — Sharepic (Portrait)</title>
+  <link rel="preconnect" href="https://fonts.googleapis.com">
+  <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
+  <link href="https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap" rel="stylesheet">
+  <style>
+    * {
+      box-sizing: border-box;
+      margin: 0;
+      padding: 0;
+    }
+
+    body {
+      width: 1080px;
+      height: 1920px;
+      font-family: 'Plus Jakarta Sans', sans-serif;
+      color: #e2e8f0;
+      background: #0f172a;
+      overflow: hidden;
+      display: flex;
+      flex-direction: column;
+      justify-content: space-between;
+      align-items: center;
+      padding: 100px 80px;
+      background:
+        radial-gradient(circle at 50% 10%, rgba(56, 189, 248, 0.18) 0%, transparent 45%),
+        radial-gradient(circle at 50% 90%, rgba(134, 59, 255, 0.22) 0%, transparent 45%),
+        linear-gradient(180deg, #090d16 0%, #111827 50%, #090d16 100%);
+      position: relative;
+    }
+
+    /* Subtle background grid pattern */
+    body::after {
+      content: "";
+      position: absolute;
+      inset: 0;
+      background-image: linear-gradient(rgba(148, 163, 184, 0.03) 1px, transparent 1px),
+                        linear-gradient(90deg, rgba(148, 163, 184, 0.03) 1px, transparent 1px);
+      background-size: 40px 40px;
+      pointer-events: none;
+      z-index: 0;
+    }
+
+    /* Outer border */
+    .outer-border {
+      position: absolute;
+      inset: 40px;
+      border: 1px solid rgba(148, 163, 184, 0.1);
+      border-radius: 30px;
+      pointer-events: none;
+      z-index: 1;
+    }
+
+    .brand {
+      display: flex;
+      flex-direction: column;
+      align-items: center;
+      gap: 30px;
+      z-index: 2;
+      text-align: center;
+      margin-top: 40px;
+    }
+
+    .logo {
+      width: 140px;
+      height: 140px;
+      object-fit: contain;
+      filter: drop-shadow(0 8px 24px rgba(56, 189, 248, 0.3));
+    }
+
+    .title-group h1 {
+      font-size: 64px;
+      font-weight: 800;
+      letter-spacing: -0.03em;
+      color: #ffffff;
+      line-height: 1.1;
+      background: linear-gradient(135deg, #ffffff 60%, #94a3b8 100%);
+      -webkit-background-clip: text;
+      background-clip: text;
+      -webkit-text-fill-color: transparent;
+    }
+
+    .title-group p {
+      font-size: 26px;
+      color: #38bdf8;
+      font-weight: 600;
+      margin-top: 8px;
+      letter-spacing: -0.01em;
+    }
+
+    .main-content {
+      width: 100%;
+      display: flex;
+      flex-direction: column;
+      gap: 50px;
+      z-index: 2;
+    }
+
+    .intro-text {
+      font-size: 26px;
+      line-height: 1.6;
+      color: #cbd5e1;
+      font-weight: 400;
+      text-align: center;
+      padding: 0 20px;
+    }
+
+    .intro-text strong {
+      color: #ffffff;
+      font-weight: 600;
+    }
+
+    .features-card {
+      background: rgba(30, 41, 59, 0.45);
+      backdrop-filter: blur(16px);
+      -webkit-backdrop-filter: blur(16px);
+      border: 1px solid rgba(255, 255, 255, 0.08);
+      border-radius: 24px;
+      padding: 50px 60px;
+      box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4);
+      position: relative;
+    }
+
+    .features-card::before {
+      content: "";
+      position: absolute;
+      inset: 0;
+      border-radius: 24px;
+      padding: 1px;
+      background: linear-gradient(to bottom, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.02));
+      -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
+      mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
+      -webkit-mask-composite: xor;
+      mask-composite: exclude;
+      pointer-events: none;
+    }
+
+    .card-title {
+      font-size: 20px;
+      font-weight: 700;
+      text-transform: uppercase;
+      letter-spacing: 0.08em;
+      color: #94a3b8;
+      margin-bottom: 35px;
+      display: flex;
+      align-items: center;
+      gap: 12px;
+    }
+
+    .card-title::after {
+      content: "";
+      flex: 1;
+      height: 1px;
+      background: rgba(148, 163, 184, 0.15);
+    }
+
+    .badge-premium {
+      background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
+      color: #1e293b;
+      font-size: 16px;
+      font-weight: 800;
+      text-transform: uppercase;
+      letter-spacing: 0.1em;
+      padding: 6px 14px;
+      border-radius: 8px;
+    }
+
+    .features-list {
+      display: flex;
+      flex-direction: column;
+      gap: 30px;
+      list-style: none;
+    }
+
+    .feature-item {
+      display: flex;
+      align-items: flex-start;
+      gap: 20px;
+      font-size: 24px;
+      line-height: 1.4;
+      color: #cbd5e1;
+      font-weight: 500;
+    }
+
+    .feature-icon {
+      color: #38bdf8;
+      font-size: 26px;
+      display: flex;
+      align-items: center;
+      justify-content: center;
+      margin-top: 3px;
+      text-shadow: 0 0 10px rgba(56, 189, 248, 0.6);
+    }
+
+    .bottom-section {
+      width: 100%;
+      display: flex;
+      flex-direction: column;
+      align-items: center;
+      gap: 50px;
+      z-index: 2;
+      margin-bottom: 40px;
+    }
+
+    .cta-container {
+      display: flex;
+      flex-direction: column;
+      align-items: center;
+      gap: 30px;
+    }
+
+    .cta-badge {
+      background: linear-gradient(135deg, #38bdf8 0%, #0284c7 100%);
+      color: #0f172a;
+      font-size: 32px;
+      font-weight: 800;
+      padding: 20px 45px;
+      border-radius: 16px;
+      letter-spacing: -0.02em;
+      box-shadow: 0 10px 30px rgba(56, 189, 248, 0.25);
+    }
+
+    .qr-code {
+      width: 160px;
+      height: 160px;
+      background: #ffffff;
+      padding: 10px;
+      border-radius: 16px;
+      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
+      display: flex;
+      align-items: center;
+      justify-content: center;
+    }
+
+    .qr-code img {
+      width: 100%;
+      height: 100%;
+      object-fit: contain;
+    }
+
+    footer {
+      font-size: 18px;
+      color: #64748b;
+      text-align: center;
+    }
+
+    footer strong {
+      color: #94a3b8;
+      font-weight: 600;
+    }
+  </style>
+</head>
+<body>
+  <div class="outer-border"></div>
+  
+  <div class="brand">
+    <img class="logo" src="../../client/public/logo.png" alt="Kapteins Daagbok" />
+    <div class="title-group">
+      <h1>Kapteins Daagbok</h1>
+      <p>Digitales Yacht-Logbuch</p>
+    </div>
+  </div>
+
+  <div class="main-content">
+    <p class="intro-text">
+      Führe dein Bordlogbuch modern & digital: Reisetage, GPS-Tracks, Crew- und Schiffsdaten — 
+      <strong>Ende-zu-Ende-verschlüsselt</strong>, als App installierbar und <strong>auch offline</strong> auf See nutzbar.
+    </p>
+
+    <div class="features-card">
+      <div class="card-title">Top Features <span class="badge-premium">Kostenlos & Werbefrei</span></div>
+      <ul class="features-list">
+        <li class="feature-item">
+          <span class="feature-icon">✦</span>
+          <span>Nautisches Logbuch-Format & Streckenstatistik</span>
+        </li>
+        <li class="feature-item">
+          <span class="feature-icon">✦</span>
+          <span>Offline-first PWA — läuft auf allen Smartphones & Tablets</span>
+        </li>
+        <li class="feature-item">
+          <span class="feature-icon">✦</span>
+          <span>Ende-zu-Ende Verschlüsselung (Zero-Knowledge)</span>
+        </li>
+        <li class="feature-item">
+          <span class="feature-icon">✦</span>
+          <span>Einfache passwortlose Passkey-Anmeldung</span>
+        </li>
+        <li class="feature-item">
+          <span class="feature-icon">✦</span>
+          <span>GPS-Track-Upload & automatische NMEA-Erfassung</span>
+        </li>
+        <li class="feature-item">
+          <span class="feature-icon">✦</span>
+          <span>Crew-Einladung zur gemeinsamen Logbuch-Arbeit</span>
+        </li>
+      </ul>
+    </div>
+  </div>
+
+  <div class="bottom-section">
+    <div class="cta-container">
+      <div class="cta-badge">
+        kapteins-daagbok.eu
+      </div>
+      <div class="qr-code">
+        <img src="assets/qr-kapteins-daagbok.eu.png" alt="QR Code" />
+      </div>
+    </div>
+    <footer>
+      <strong>Kapteins Daagbok</strong> ist ein werbefreies, privates Hobbyprojekt.
+    </footer>
+  </div>
+</body>
+</html>
diff --git a/scripts/generate-sharepic.mjs b/scripts/generate-sharepic.mjs
index f8301e8..411fd91 100755
--- a/scripts/generate-sharepic.mjs
+++ b/scripts/generate-sharepic.mjs
@@ -1,6 +1,6 @@
 #!/usr/bin/env node
 /**
- * Generates the sharepic PNG from docs/marketing/sharepic.html
+ * Generates the sharepic PNGs (landscape & portrait) from HTML files
  *
  * Usage:
  *   node scripts/generate-sharepic.mjs
@@ -15,8 +15,6 @@ const __dirname = dirname(fileURLToPath(import.meta.url))
 const repoRoot = resolve(__dirname, '..')
 const clientDir = resolve(repoRoot, 'client')
 const marketingDir = resolve(repoRoot, 'docs/marketing')
-const htmlPath = resolve(marketingDir, 'sharepic.html')
-const pngPath = resolve(marketingDir, 'kapteins-daagbok-sharepic.png')
 
 const require = createRequire(resolve(clientDir, 'package.json'))
 
@@ -50,35 +48,48 @@ function loadPlaywright() {
   }
 }
 
-async function main() {
-  const playwright = loadPlaywright()
-  await ensurePlaywrightChromium(playwright)
+async function renderSharepic(browser, htmlName, pngName, width, height) {
+  const htmlPath = resolve(marketingDir, htmlName)
+  const pngPath = resolve(marketingDir, pngName)
   
-  console.log('Generating sharepic from HTML...')
-  const browser = await playwright.chromium.launch({ headless: true })
+  console.log(`Generating sharepic (${width}x${height}) from ${htmlName}...`)
+  
+  const context = await browser.newContext({
+    viewport: { width, height },
+    deviceScaleFactor: 2 // High-DPI for crisp text
+  })
+  const page = await context.newPage()
   
   try {
-    const context = await browser.newContext({
-      viewport: { width: 1200, height: 630 },
-      deviceScaleFactor: 2 // High-DPI for crisp text
-    })
-    const page = await context.newPage()
-    
-    // Wait for fonts/images to load fully
     await page.goto(pathToFileURL(htmlPath).href, { waitUntil: 'networkidle' })
-    
-    // Take a screenshot of the viewport
     await page.screenshot({
       path: pngPath,
       type: 'png'
     })
-    console.log('Sharepic PNG written successfully to:', pngPath)
+    console.log('Successfully wrote:', pngPath)
+  } finally {
+    await page.close()
+  }
+}
+
+async function main() {
+  const playwright = loadPlaywright()
+  await ensurePlaywrightChromium(playwright)
+  
+  const browser = await playwright.chromium.launch({ headless: true })
+  
+  try {
+    // Landscape 1200x630
+    await renderSharepic(browser, 'sharepic.html', 'kapteins-daagbok-sharepic.png', 1200, 630)
+    
+    // Portrait 1080x1920
+    await renderSharepic(browser, 'sharepic-portrait.html', 'kapteins-daagbok-sharepic-portrait.png', 1080, 1920)
   } finally {
     await browser.close()
   }
 }
 
 main().catch((err) => {
-  console.error('Error generating sharepic:', err)
+  console.error('Error generating sharepics:', err)
   process.exit(1)
 })
