diff --git a/src/articles.php b/src/articles.php
index 98e2cb0..417d7a4 100644
--- a/src/articles.php
+++ b/src/articles.php
@@ -620,29 +620,27 @@ document.addEventListener('DOMContentLoaded', function () {
                 renderTable();
             });
         });
-    }
 
-    filterText.addEventListener('input', renderTable);
-    filterCategory.addEventListener('change', renderTable);
-    filterManufacturer.addEventListener('change', renderTable);
+        // Bulk Selection Logic
+        document.querySelectorAll('.bulk-select-checkbox').forEach(cb => {
+            cb.checked = bulkSelectedArticles.has(cb.value);
+            cb.addEventListener('change', function(e) {
+                e.stopPropagation();
+                if (this.checked) {
+                    bulkSelectedArticles.add(this.value);
+                } else {
+                    bulkSelectedArticles.delete(this.value);
+                }
+                updateBulkUI();
+            });
+        });
 
-    document.getElementById('btn-expand-all').addEventListener('click', function() {
-        collapsedCategories.clear();
-        renderTable();
-    });
-
-    document.getElementById('btn-collapse-all').addEventListener('click', function() {
-        // Find all currently rendered categories
-        const visibleCategories = Array.from(document.querySelectorAll('.category-header')).map(el => el.getAttribute('data-category'));
-        visibleCategories.forEach(c => collapsedCategories.add(c));
-        renderTable();
-    });
-
-    renderTable();
-});
-</script>
-
-<?php require_once 'footer.php'; ?>tAll.checked = false;
+        const selectAllCb = document.getElementById('bulk-select-all');
+        if (selectAllCb) {
+            // Remove old listeners if any by cloning
+            const newSelectAll = selectAllCb.cloneNode(true);
+            selectAllCb.parentNode.replaceChild(newSelectAll, selectAllCb);
+            newSelectAll.checked = false;
             newSelectAll.addEventListener('change', function() {
                 const isChecked = this.checked;
                 document.querySelectorAll('.bulk-select-checkbox').forEach(cb => {
@@ -689,11 +687,4 @@ document.addEventListener('DOMContentLoaded', function () {
 });
 </script>
 
-<?php require_once 'footer.php'; ?>rTable();
-    });
-
-    renderTable();
-});
-</script>
-
 <?php require_once 'footer.php'; ?>
\ No newline at end of file
diff --git a/src/storage_locations.php b/src/storage_locations.php
index 34a7563..e3ea380 100644
--- a/src/storage_locations.php
+++ b/src/storage_locations.php
@@ -208,10 +208,25 @@ foreach ($all_locations as $location) {
                             <div class="card-header d-flex justify-content-between align-items-center">
                                 <h6 class="mb-0"><i class="fas fa-box-open me-2"></i><?php echo htmlspecialchars($loc1['name']); ?></h6>
                                 <div class="btn-group">
+                                    <?php 
+                                    $has_children_tokens = false;
+                                    $children_data = [];
+                                    if (isset($locations_level2[$loc1['id']])) {
+                                        foreach ($locations_level2[$loc1['id']] as $child) {
+                                            if (!empty($child['public_token'])) {
+                                                $has_children_tokens = true;
+                                                $children_data[] = ['name' => $child['name'], 'token' => $child['public_token']];
+                                            }
+                                        }
+                                    }
+                                    if ($has_children_tokens):
+                                    ?>
+                                        <button type="button" class="btn btn-sm btn-outline-info" onclick="showAllBarcodes('<?php echo htmlspecialchars(json_encode($children_data), ENT_QUOTES, 'UTF-8'); ?>', '<?php echo htmlspecialchars(addslashes($loc1['name'])); ?>')" title="Alle QR-Codes der Unterebenen drucken"><i class="fas fa-print"></i></button>
+                                    <?php endif; ?>
                                     <?php if(empty($loc1['public_token'])): ?>
-                                        <a href="storage_locations.php?action=generate_barcode&id=<?php echo $loc1['id']; ?>" class="btn btn-sm btn-outline-secondary" title="Barcode erstellen"><i class="fas fa-qrcode"></i></a>
+                                        <a href="storage_locations.php?action=generate_barcode&id=<?php echo $loc1['id']; ?>" class="btn btn-sm btn-outline-secondary" title="QR-Code erstellen"><i class="fas fa-qrcode"></i></a>
                                     <?php else: ?>
-                                        <button type="button" class="btn btn-sm btn-outline-success" onclick="showBarcode('<?php echo htmlspecialchars($loc1['public_token']); ?>', '<?php echo htmlspecialchars(addslashes($loc1['name'])); ?>')" title="Barcode anzeigen"><i class="fas fa-qrcode"></i></button>
+                                        <button type="button" class="btn btn-sm btn-outline-success" onclick="showBarcode('<?php echo htmlspecialchars($loc1['public_token']); ?>', '<?php echo htmlspecialchars(addslashes($loc1['name'])); ?>')" title="QR-Code anzeigen"><i class="fas fa-qrcode"></i></button>
                                     <?php endif; ?>
                                     <button type="button" class="btn btn-sm btn-outline-primary" data-bs-toggle="modal" data-bs-target="#editLocationModal" data-id="<?php echo $loc1['id']; ?>" data-name="<?php echo htmlspecialchars($loc1['name']); ?>"><i class="fas fa-edit"></i></button>
                                     <a href="storage_locations.php?action=delete&id=<?php echo $loc1['id']; ?>" class="btn btn-sm btn-outline-danger" onclick="return confirm('Sicher, dass du diesen Ort löschen willst?');"><i class="fas fa-trash"></i></a>
@@ -224,6 +239,11 @@ foreach ($all_locations as $location) {
                                         <li class="list-group-item d-flex justify-content-between align-items-center">
                                             <span><i class="fas fa-long-arrow-alt-right me-2 text-muted"></i><?php echo htmlspecialchars($loc2['name']); ?></span>
                                             <div class="btn-group">
+                                                <?php if(empty($loc2['public_token'])): ?>
+                                                    <a href="storage_locations.php?action=generate_barcode&id=<?php echo $loc2['id']; ?>" class="btn btn-sm btn-outline-secondary py-0 px-1" title="QR-Code erstellen"><i class="fas fa-qrcode"></i></a>
+                                                <?php else: ?>
+                                                    <button type="button" class="btn btn-sm btn-outline-success py-0 px-1" onclick="showBarcode('<?php echo htmlspecialchars($loc2['public_token']); ?>', '<?php echo htmlspecialchars(addslashes($loc2['name'])); ?>')" title="QR-Code anzeigen"><i class="fas fa-qrcode"></i></button>
+                                                <?php endif; ?>
                                                 <button type="button" class="btn btn-sm btn-outline-primary py-0 px-1" data-bs-toggle="modal" data-bs-target="#editLocationModal" data-id="<?php echo $loc2['id']; ?>" data-name="<?php echo htmlspecialchars($loc2['name']); ?>"><i class="fas fa-edit"></i></button>
                                                 <a href="storage_locations.php?action=delete&id=<?php echo $loc2['id']; ?>" class="btn btn-sm btn-outline-danger py-0 px-1" onclick="return confirm('Sicher, dass du diesen Unter-Ort löschen willst?');"><i class="fas fa-trash"></i></a>
                                             </div>
@@ -284,23 +304,74 @@ function showBarcode(token, name) {
     const baseUrl = window.location.origin + window.location.pathname.replace('storage_locations.php', 'public_location.php?token=');
     const url = baseUrl + token;
     document.getElementById('barcodeLocationName').textContent = name;
-    document.getElementById('barcodeImage').src = 'https://bwipjs-api.metafloor.com/?bcid=code128&text=' + encodeURIComponent(url) + '&scale=2&includetext=false';
+    document.getElementById('barcodeImage').src = 'https://api.qrserver.com/v1/create-qr-code/?size=300x300&data=' + encodeURIComponent(url);
     document.getElementById('barcodeLink').href = url;
     new bootstrap.Modal(document.getElementById('barcodeModal')).show();
 }
+
+function showAllBarcodes(jsonStr, level1Name) {
+    const data = JSON.parse(jsonStr);
+    const container = document.getElementById('allBarcodesContainer');
+    container.innerHTML = '';
+    const baseUrl = window.location.origin + window.location.pathname.replace('storage_locations.php', 'public_location.php?token=');
+    
+    document.getElementById('printModalLabel').textContent = "QR-Codes für: " + level1Name;
+
+    data.forEach(item => {
+        const url = baseUrl + item.token;
+        const col = document.createElement('div');
+        col.className = 'col-6 col-md-4 mb-4 text-center';
+        col.innerHTML = `
+            <div class="border p-3 bg-white" style="page-break-inside: avoid;">
+                <p class="fw-bold mb-2 text-truncate" style="font-size: 0.9rem;">${item.name}</p>
+                <img src="https://api.qrserver.com/v1/create-qr-code/?size=150x150&data=${encodeURIComponent(url)}" alt="QR Code" class="img-fluid mb-2">
+            </div>
+        `;
+        container.appendChild(col);
+    });
+
+    new bootstrap.Modal(document.getElementById('printModal')).show();
+}
+
+function printDiv(divId) {
+    var printContents = document.getElementById(divId).innerHTML;
+    var originalContents = document.body.innerHTML;
+    document.body.innerHTML = "<html><head><title>QR-Codes drucken</title></head><body>" + printContents + "</body></html>";
+    window.print();
+    document.body.innerHTML = originalContents;
+    window.location.reload(); // Reload to restore event listeners after print
+}
 </script>
 
+<div class="modal fade" id="printModal" tabindex="-1" aria-labelledby="printModalLabel" aria-hidden="true">
+  <div class="modal-dialog modal-xl modal-dialog-centered">
+    <div class="modal-content">
+      <div class="modal-header">
+        <h5 class="modal-title" id="printModalLabel"><i class="fas fa-print me-2"></i>Alle QR-Codes</h5>
+        <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
+      </div>
+      <div class="modal-body bg-light">
+          <div class="row" id="allBarcodesContainer"></div>
+      </div>
+      <div class="modal-footer">
+          <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Schließen</button>
+          <button type="button" class="btn btn-primary" onclick="printDiv('allBarcodesContainer')"><i class="fas fa-print me-2"></i>Jetzt drucken</button>
+      </div>
+    </div>
+  </div>
+</div>
+
 <div class="modal fade" id="barcodeModal" tabindex="-1" aria-labelledby="barcodeModalLabel" aria-hidden="true">
   <div class="modal-dialog modal-dialog-centered">
     <div class="modal-content">
       <div class="modal-header">
-        <h5 class="modal-title" id="barcodeModalLabel"><i class="fas fa-barcode me-2"></i>Lagerort Barcode</h5>
+        <h5 class="modal-title" id="barcodeModalLabel"><i class="fas fa-qrcode me-2"></i>Lagerort QR-Code</h5>
         <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
       </div>
       <div class="modal-body text-center">
         <p class="fw-bold" id="barcodeLocationName"></p>
-        <p class="small text-muted mb-4">Hinweis: Einen Standard-Barcode (1D) mit einer URL können viele Smartphone-Kameras nicht nativ als Weblink öffnen (dafür sind QR-Codes gedacht). Für das Scannen wird in der Regel eine Barcode-Scanner-App benötigt.</p>
-        <img id="barcodeImage" src="" alt="Barcode" class="img-fluid border p-2 bg-white mb-3" style="max-width: 100%;">
+        <p class="small text-muted mb-4">Scanne diesen Code mit deinem Smartphone, um direkt den Inhalt dieses Lagerorts zu sehen.</p>
+        <img id="barcodeImage" src="" alt="QR Code" class="img-fluid border p-2 bg-white mb-3" style="max-width: 250px;">
         <div class="mt-2">
              <a id="barcodeLink" href="" target="_blank" class="btn btn-outline-primary btn-sm"><i class="fas fa-external-link-alt me-2"></i>Link manuell testen</a>
         </div>