diff --git a/types/dwt/addon.pdf.d.ts b/types/dwt/addon.pdf.d.ts
index 73f270c7a4..ef0980abfd 100644
--- a/types/dwt/addon.pdf.d.ts
+++ b/types/dwt/addon.pdf.d.ts
@@ -1,6 +1,13 @@
-/**
- * Dynamsoft WebTwain Addon PDF
- */
+/*!
+* Dynamsoft WebTwain PDF Addon
+* Product: Dynamsoft Web Twain
+* Web Site: http://www.dynamsoft.com
+*
+* Copyright 2018, Dynamsoft Corporation
+* Author: Dynamsoft Support Team
+* Version: 13.4
+*/
+
 declare enum EnumDWT_ConverMode {
     CM_DEFAULT = 0,
     TWPT_CM_RENDERALLGRAY = 1
diff --git a/types/dwt/dwt-tests.ts b/types/dwt/dwt-tests.ts
index 7c9e96bf6a..1be94acca1 100644
--- a/types/dwt/dwt-tests.ts
+++ b/types/dwt/dwt-tests.ts
@@ -103,6 +103,8 @@ function downloadImage() {
 function loadPDF() {
     const DWObject = Dynamsoft.WebTwainEnv.GetWebTwain('dwtcontrolContainer');
     if (DWObject) {
+		DWObject.Addon.PDF.SetResolution(200);
+		DWObject.Addon.PDF.SetConvertMode(1);
         DWObject.IfShowFileDialog = true;
         DWObject.LoadImageEx(" ", 5);
     }
diff --git a/types/dwt/index.d.ts b/types/dwt/index.d.ts
index 752e0a8e0a..b940c6ae4e 100644
--- a/types/dwt/index.d.ts
+++ b/types/dwt/index.d.ts
@@ -13,7 +13,7 @@
 *
 * Copyright 2018, Dynamsoft Corporation
 * Author: Dynamsoft Support Team
-* Version: 13
+* Version: 13.4
 */
 
 /**