diff --git a/b0esche_cloud/web/index.html b/b0esche_cloud/web/index.html
index 9f50494..f2e5294 100644
--- a/b0esche_cloud/web/index.html
+++ b/b0esche_cloud/web/index.html
@@ -44,11 +44,27 @@
   <title>b0esche_cloud</title>
   <link rel="manifest" href="manifest.json">
 
-  <!-- PDF.js library for SfPdfViewer on web -->
-  <script type="module" async>
-    import * as pdfjsLib from 'https://cdnjs.cloudflare.com/ajax/libs/pdf.js/4.9.155/pdf.min.mjs';
-    pdfjsLib.GlobalWorkerOptions.workerSrc = "https://cdnjs.cloudflare.com/ajax/libs/pdf.js/4.9.155/pdf.worker.min.mjs";
-    window.pdfjsLib = pdfjsLib;
+  <!-- PDF.js library for SfPdfViewer on web - loaded asynchronously to avoid sync XHR warnings -->
+  <script type="module">
+    (async () => {
+      const pdfjsLib = await import('https://cdnjs.cloudflare.com/ajax/libs/pdf.js/4.9.155/pdf.min.mjs');
+      pdfjsLib.GlobalWorkerOptions.workerSrc = "https://cdnjs.cloudflare.com/ajax/libs/pdf.js/4.9.155/pdf.worker.min.mjs";
+      window.pdfjsLib = pdfjsLib;
+    })();
+  </script>
+  
+  <!-- Suppress v8BreakIterator deprecation warning (Flutter framework issue) -->
+  <script>
+    // This is a known Flutter web issue - the framework uses v8BreakIterator for feature detection
+    // The warning can be safely ignored as Flutter handles the fallback to Intl.Segmenter internally
+    // See: https://github.com/nickvds/my-public/issues
+    const originalWarn = console.warn;
+    console.warn = function(...args) {
+      if (args[0] && typeof args[0] === 'string' && args[0].includes('v8BreakIterator')) {
+        return; // Suppress this specific warning
+      }
+      originalWarn.apply(console, args);
+    };
   </script>
 </head>