diff --git a/mccs-it/thermal/public/index.html b/mccs-it/thermal/public/index.html
index 7783eb1..7948691 100644
--- a/mccs-it/thermal/public/index.html
+++ b/mccs-it/thermal/public/index.html
@@ -4,10 +4,18 @@
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>Test Print</title>
+    <style>
+        #pdfViewer {
+            width: 100%;
+            height: 600px; /* Adjust as needed */
+            border: none;
+        }
+    </style>
 </head>
 <body>
     <h1>Thermal Printer Test</h1>
     <button id="testPrintBtn">Test Print</button>
+    <iframe id="pdfViewer" style="display:none;"></iframe>
 
     <script>
         document.getElementById('testPrintBtn').addEventListener('click', () => {
@@ -15,7 +23,9 @@
                 .then(response => response.blob())
                 .then(blob => {
                     const url = URL.createObjectURL(blob);
-                    window.open(url);
+                    const pdfViewer = document.getElementById('pdfViewer');
+                    pdfViewer.src = url;
+                    pdfViewer.style.display = 'block'; // Show the iframe
                 })
                 .catch(error => alert('Error: ' + error));
         });
