diff --git a/EnvelopeGenerator.Web/Views/Home/ShowEnvelope.cshtml b/EnvelopeGenerator.Web/Views/Home/ShowEnvelope.cshtml
index b4202fb2..ec1badeb 100644
--- a/EnvelopeGenerator.Web/Views/Home/ShowEnvelope.cshtml
+++ b/EnvelopeGenerator.Web/Views/Home/ShowEnvelope.cshtml
@@ -71,16 +71,7 @@
     var envelopeKey = ViewData["EnvelopeKey"] as string;
 
 <script nonce="@nonce">
-    var base64String = "@Html.Raw(documentBase64String.TrySanitize(_sanitizer))";
-    var byteCharacters = atob(base64String);
-    var byteNumbers = new Array(byteCharacters.length);
-    for (var i = 0; i < byteCharacters.length; i++) {
-        byteNumbers[i] = byteCharacters.charCodeAt(i);
-    }
-    var byteArray = new Uint8Array(byteNumbers);
-    var documentArrayBuffer = byteArray.buffer;
-
-    document.addEventListener("DOMContentLoaded", async () => await new App("@envelopeKey.TrySanitize(_sanitizer)", @Html.Raw(envelopeReceiverJson.TrySanitize(_sanitizer)), documentArrayBuffer, "@ViewData["PSPDFKitLicenseKey"]").init())
+    document.addEventListener("DOMContentLoaded", async () => await new App("@envelopeKey.TrySanitize(_sanitizer)", @Html.Raw(envelopeReceiverJson.TrySanitize(_sanitizer)), B64ToBuff("@Html.Raw(documentBase64String.TrySanitize(_sanitizer))"), "@ViewData["PSPDFKitLicenseKey"]").init())
 </script>
 }
 <div id='app'></div>
\ No newline at end of file
diff --git a/EnvelopeGenerator.Web/Views/Shared/_Layout.cshtml b/EnvelopeGenerator.Web/Views/Shared/_Layout.cshtml
index 7baa0247..4b93faf7 100644
--- a/EnvelopeGenerator.Web/Views/Shared/_Layout.cshtml
+++ b/EnvelopeGenerator.Web/Views/Shared/_Layout.cshtml
@@ -23,6 +23,7 @@
     <script src="~/lib/pspdfkit/pspdfkit.js" asp-append-version="true"></script>
     <script src="~/lib/bootstrap-cookie-consent-settings-main/bootstrap-cookie-consent-settings.js" asp-append-version="true"></script>
     <script src="~/lib/select2/dist/js/select2.min.js"></script>
+    <script src="~/js/util.js" asp-append-version="true"></script>
     @await RenderSectionAsync("Scripts", required: false)
     <main role="main">
         <partial name="_CookieConsentPartial" />
diff --git a/EnvelopeGenerator.Web/wwwroot/js/util.js b/EnvelopeGenerator.Web/wwwroot/js/util.js
new file mode 100644
index 00000000..bba9fce3
--- /dev/null
+++ b/EnvelopeGenerator.Web/wwwroot/js/util.js
@@ -0,0 +1 @@
+const B64ToBuff = (base64String) => new Uint8Array(Array.from(atob(base64String), char => char.charCodeAt(0))).buffer;
\ No newline at end of file