diff --git a/types/dwt/Dynamsoft.d.ts b/types/dwt/Dynamsoft.d.ts
index 84413a7b8f..9f729abf1a 100644
--- a/types/dwt/Dynamsoft.d.ts
+++ b/types/dwt/Dynamsoft.d.ts
@@ -1,25 +1,3 @@
-// Type definitions for dwt 14.3.1
-// Project: http://www.dynamsoft.com/Products/WebTWAIN_Overview.aspx
-// Definitions by: Xiao Ling <https://github.com/yushulx>
-//                 Josh Hall <https://github.com/jbh>
-//                 Lincoln Hu <https://github.com/lincoln2018>
-//                 Tom Kent <https://github.com/Tom-Dynamsoft>
-// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
-// TypeScript Version: 2.2
-
-/*!
-* Based on Dynamsoft WebTwain JavaScript Intellisense
-* Product: Dynamsoft Web Twain
-* Web Site: http://www.dynamsoft.com
-*
-* Copyright 2019, Dynamsoft Corporation
-* Author: Dynamsoft Support Team
-* Version: 14.3.1
-*/
-
-/**
- * @namespace Dynamsoft
- */
 declare namespace Dynamsoft {
     let Lib: DynamsoftLib
     let WebTwainEnv: dwtEnv
diff --git a/types/dwt/addon.ocrp.d.ts b/types/dwt/addon.ocrp.d.ts
index 8fefb0f419..9fc7f7c604 100644
--- a/types/dwt/addon.ocrp.d.ts
+++ b/types/dwt/addon.ocrp.d.ts
@@ -1,20 +1,3 @@
-// Type definitions for dwt 14.3.1
-// Project: http://www.dynamsoft.com/Products/WebTWAIN_Overview.aspx
-// Definitions by: Xiao Ling <https://github.com/yushulx>
-//                 Josh Hall <https://github.com/jbh>
-//                 Lincoln Hu <https://github.com/lincoln2018>
-//                 Tom Kent <https://github.com/Tom-Dynamsoft>
-// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
-// TypeScript Version: 3.2.2
-
-/*!
-* Product: Dynamsoft Web Twain
-* Web Site: http://www.dynamsoft.com
-*
-* Copyright 2019, Dynamsoft Corporation
-* Author: Dynamsoft Support Team
-*/
-
 interface Redaction {
     FindText: string,
     FindTextFlags: EnumDWT_OCRFindTextFlags.OCRFT_WHOLEWORD;
diff --git a/types/dwt/addon.pdf.d.ts b/types/dwt/addon.pdf.d.ts
index 6a2a8636ee..2bb450af9a 100644
--- a/types/dwt/addon.pdf.d.ts
+++ b/types/dwt/addon.pdf.d.ts
@@ -1,14 +1,3 @@
-/*!
-* Dynamsoft WebTwain PDF Addon
-* Based on Dynamsoft WebTwain JavaScript Intellisense
-* Product: Dynamsoft Web Twain
-* Web Site: http://www.dynamsoft.com
-*
-* Copyright 2018, Dynamsoft Corporation
-* Author: Dynamsoft Support Team
-* Version: 14.2
-*/
-
 declare enum EnumDWT_ConvertMode {
     CM_DEFAULT = 0,
     CM_RENDERALL = 1
diff --git a/types/dwt/dwt.d.ts b/types/dwt/dwt.d.ts
index 1a3e97a0c3..14c63c03eb 100644
--- a/types/dwt/dwt.d.ts
+++ b/types/dwt/dwt.d.ts
@@ -1,23 +1,3 @@
-// Type definitions for dwt 14.3.1
-// Project: http://www.dynamsoft.com/Products/WebTWAIN_Overview.aspx
-// Definitions by: Xiao Ling <https://github.com/yushulx>
-//                 Josh Hall <https://github.com/jbh>
-//                 Lincoln Hu <https://github.com/lincoln2018>
-//                 Tom Kent <https://github.com/Tom-Dynamsoft>
-// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
-// TypeScript Version: 3.2.2
-
-/*!
-* Product: Dynamsoft Web Twain
-* Web Site: http://www.dynamsoft.com
-*
-* Copyright 2019, Dynamsoft Corporation
-* Author: Dynamsoft Support Team
-*/
-
-/**
- * @class
- */
 // properties (get/set) / sync functions
 interface WebTwain {
     Addon: WebTwainAddon;
diff --git a/types/dwt/index.d.ts b/types/dwt/index.d.ts
index 6d36b84c3e..b81b0a0720 100644
--- a/types/dwt/index.d.ts
+++ b/types/dwt/index.d.ts
@@ -5,15 +5,8 @@
 //                 Lincoln Hu <https://github.com/lincoln2018>
 //                 Tom Kent <https://github.com/Tom-Dynamsoft>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
-// TypeScript Version: 3.2.2
+// TypeScript Version: 2.3
 
-/*!
-* Product: Dynamsoft Web Twain
-* Web Site: http://www.dynamsoft.com
-*
-* Copyright 2019, Dynamsoft Corporation
-* Author: Dynamsoft Support Team
-*/
 
 /// <reference path="Dynamsoft.d.ts" />
 /// <reference path="dwt.d.ts" />
diff --git a/types/dwt/tsconfig.json b/types/dwt/tsconfig.json
index 13f35fcfbf..a37b15c38f 100644
--- a/types/dwt/tsconfig.json
+++ b/types/dwt/tsconfig.json
@@ -18,7 +18,10 @@
     },
     "files": [
         "index.d.ts",
+        "Dynamsoft.d.ts",
+        "dwt.d.ts",
+        "addon.ocrp.d.ts",
         "addon.pdf.d.ts",
         "dwt-tests.ts"
     ]
-}
\ No newline at end of file
+}