diff --git a/test.html b/test.html
index cfb724d..2f40289 100644
--- a/test.html
+++ b/test.html
@@ -4,7 +4,7 @@
     </head>
     <body>
           <div>
-            <iframe id="pdf-js-viewer" src="https://www.geometrytools.ga/pdf/web/viewer.html?file=test.pdf" title="webviewer" frameborder="0" width="500" height="600"></iframe>
+            <iframe id="pdf-js-viewer" src="https://www.geometrytools.ga/pdf/web/viewer.html?file=test.pdf" title="webviewer" frameborder="0" width="100%" height="100%"></iframe>
           </div>
     </body>
     <style>
