From fc6f20ad93300585c3d45bc11e63a45c8c30cfef Mon Sep 17 00:00:00 2001 From: tony-xlh Date: Thu, 6 Nov 2025 14:41:58 +0800 Subject: [PATCH 01/70] new dwt 19.3 changes --- _articles/extended-usage/index.md | 1 + _articles/extended-usage/ocr.md | 425 +++++++++++++++++++++++++++ _articles/index.md | 1 + _articles/info/api/Addon_OCR.md | 308 +++++++++++++++++++ _articles/info/api/Dynamsoft_Enum.md | 36 +++ _articles/info/api/appendix.md | 5 + _articles/info/api/index.md | 7 + _articles/info/api/interfaces.md | 52 ++++ _data/full_tree.yml | 2 + 9 files changed, 837 insertions(+) create mode 100644 _articles/extended-usage/ocr.md create mode 100644 _articles/info/api/Addon_OCR.md diff --git a/_articles/extended-usage/index.md b/_articles/extended-usage/index.md index 6f0d70d7..53e1279f 100644 --- a/_articles/extended-usage/index.md +++ b/_articles/extended-usage/index.md @@ -21,6 +21,7 @@ This set of guides builds on the fundamental features covered in the standard us - [UI Customization](/_articles/extended-usage/ui-customization.md) - [Using the DWT RESTful API](/_articles/extended-usage/restful-api.md) - [Barcode Recognition](/_articles/extended-usage/barcode-processing.md) +- [OCR](./ocr.md) - [PDF Handling](/_articles/extended-usage/pdf-processing.md) - [Buffer Caching](/_articles/extended-usage/buffer-caching.md) - [Remote Scan](https://www.dynamsoft.com/remote-scan/docs/introduction/) \ No newline at end of file diff --git a/_articles/extended-usage/ocr.md b/_articles/extended-usage/ocr.md new file mode 100644 index 00000000..774e8e25 --- /dev/null +++ b/_articles/extended-usage/ocr.md @@ -0,0 +1,425 @@ +--- +layout: default-layout +needAutoGenerateSidebar: true +title: Dynamic Web TWAIN SDK Features - OCR +keywords: Dynamic Web TWAIN, Documentation, OCR +breadcrumbText: OCR +description: Dynamic Web TWAIN SDK Documentation OCR Page +--- + +# OCR + +Dynamic Web TWAIN provides an OCR add-on to extract text in your scanned images. It uses latest deep learning techniques and has a good accuracy. Read on to learn about how to use it. + +## Requirements + +* Windows 10+ +* A license with the OCR module + +## How to Use + +### Step One - Install the OCR Package + +Download `DynamicWebTWAINOCRPack.zip`, unzip it and run `Install.cmd` as admin to install the OCR package. It will copy the `ocr` folder to the service's [installation folder](/_articles/extended-usage/dynamsoft-service-configuration.md#installation-folder). + +### Step Two - Write a Basic Document Scanning Page + +Create a HTML with the following content. It can scan documents from scanners as well as loading local images. + +```html + + + + Dynamic Web TWAIN - OCR Demo + + + + + + +
+
Input:
+ + +
+ +
+
+
+ + + + +``` + +### Step Three - Include the Add-on + +Reference the add-on with the following code. It is in the [resources files](/_articles/faq/what-are-the-resources-files.md). + +> If you are using the [dwt package](https://www.npmjs.com/package/dwt), the OCR is already included in the main JavaScript file ( `dynamsoft.webtwain.min.js` or `dynamsoft.webtwain.min.mjs` ) which means you can skip this step. + +``` html + +``` + +Then, you can run the following to check if it is installed correctly: + +```js +async function CheckIsOCRInstalled(){ + try { + let info = await DWTObject.Addon.OCRKit.GetInstalledOCRInfo(); + console.log(info); + if (info.version) { + return true; + } + } catch (error) { + alert(error.message); + return false; + } + alert("OCR Add-on is not installed. Please install it to use OCR features."); + return false; +} +``` + +APIs used: + +[`GetInstalledOCRInfo()`](/_articles/info/api/Addon_OCR.md#getinstalledocrinfo) + +### Step Four - Detect Page Orientation + +This is an optional step. If the scanned document is rotated, we can detect its orientation and rotate it. + +```js +async function CorrectOrientationForOne(index){ + let result = await DWTObject.Addon.OCRKit.DetectPageOrientation(index); + if (result.angle != 0) { + DWTObject.Rotate(index,result.angle,true); + } +} +``` + +APIs used: + +- [`DetectPageOrientation()`](/_articles/info/api/Addon_OCR.md#detectpageorientation) +- [`Rotate()`](/_articles/info/api/WebTwain_Edit.md#rotate) + +### Step Five - Recognize Text + +Recognize the text in one image and print it in a `pre` element. + +```html +

+
+```
+
+APIs used:
+
+[`Recognize()`](/_articles/info/api/Addon_OCR.md#recognize)
+
+### Step Six - Save as PDF
+
+After recognition, we can save the the OCR results as a PDF file. It will add an invisible text layer above the original content so that the text becomes selectable and searchable.
+
+```js
+let indicesOfAll = DWTObject.SelectAllImages();
+await DWTObject.Addon.OCRKit.SaveToPath(indicesOfAll,Dynamsoft.DWT.EnumDWT_OCRKitOutputFormat.PDF_WITH_EXTRA_TEXTLAYER);
+```
+
+APIs used:
+
+[`SaveToPath()`](/_articles/info/api/Addon_OCR.md#savetopath)
+
+### Step Seven - Review the Complete Code
+
+Here is the complete code of the demo.
+
+```html
+
+
+
+  Dynamic Web TWAIN - OCR Demo
+  
+  
+  
+  
+  
+
+
+  

+    
Input: 

+    
+    
+  

+  

+    
Processing:

+    
+    
+    
+    
+  

+  

+    
Output:

+    
+    
+  

+
+  

+    

+    

+  

+  
+  
+
+
+```
diff --git a/_articles/index.md b/_articles/index.md
index 69160c8f..af0460b9 100644
--- a/_articles/index.md
+++ b/_articles/index.md
@@ -73,6 +73,7 @@ description: Dynamic Web TWAIN SDK Documentation Homepage
 - [Dynamsoft FileUploader]({{site.api}}Dynamsoft_FileUploader.html)
 - Add-On Modules
   - [Barcode Reader]({{site.api}}Addon_BarcodeReader.html)
+  - [OCR](/_articles/info/api/Addon_OCR.md)
   - [PDF Rasterizer]({{site.api}}Addon_PDF.html)
   - [Webcam]({{site.api}}Addon_Webcam.html)
 - [Enumerations]({{site.api}}Dynamsoft_Enum.html)
diff --git a/_articles/info/api/Addon_OCR.md b/_articles/info/api/Addon_OCR.md
new file mode 100644
index 00000000..db5233bd
--- /dev/null
+++ b/_articles/info/api/Addon_OCR.md
@@ -0,0 +1,308 @@
+---
+layout: default-layout
+needAutoGenerateSidebar: true
+title: Dynamic Web TWAIN SDK API Reference - OCR Addon APIs
+keywords: Dynamic Web TWAIN, Documentation, API Reference, OCR Addon APIs
+breadcrumbText: OCR Addon
+description: Dynamic Web TWAIN SDK Documentation API Reference OCR Addon APIs Page
+---
+
+# {WebTwainObject}.Addon.OCRKit
+
+> {WebTwainObject} denotes the `WebTwain` instance.
+
+**Methods**
+
+---
+
+## GetInstalledOCRInfo()
+
+Return the info of the installed OCR addon. It will throw an error if the OCR module is not installed.
+
+**Syntax**
+
+```typescript
+GetInstalledOCRInfo(): Promise;
+```
+
+**Return Values**
+
+An [`OCRInfo`](/_articles/info/api/interfaces.md#ocrinfo) object.
+
+**Availability**
+
+

+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
H5(Windows)H5(macOS)H5(Linux)
v19.3+ not supported not supported

+

+
+---
+
+## DetectPageOrientation()
+
+**Syntax**
+
+```ts
+DetectPageOrientation( 
+  index: number,  
+  settings?: { 
+    detectionMode?: EnumDWT_PageOrientationDetectionMode | number
+  }
+): Promise<{angle: EnumDWT_PageOrientation | number, confidence: number}>; 
+```
+
+**Parameters**
+
+`index`: Index of the image to process.
+
+`settings`: Settings of the method. You can configure the accuracy mode. Please refer to [`EnumDWT_PageOrientationDetectionMode`](/_articles/info/api/Dynamsoft_Enum.md#dynamsoftdwtenumdwt_pageorientationdetectionmode).
+
+**Return Values**
+
+Promise of an object of the orientation detection result. Please refer to [`EnumDWT_PageOrientation`](/_articles/info/api/Dynamsoft_Enum.md#dynamsoftdwtenumdwt_pageorientation).
+
+**Availability**
+
+

+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
H5(Windows)H5(macOS)H5(Linux)
v19.3+ not supported not supported

+

+
+---
+
+## Recognize()
+
+Recognize the text in one page.
+
+**Syntax**
+
+```ts
+Recognize( 
+  index: number,
+  options: {
+    settings?: { 
+      language?: string,
+      pageOrientation?: EnumDWT_PageOrientation| number,
+    },  
+    rects?: { 
+      x: number, 
+      y: number, 
+      width: number, 
+      height: number
+    }[]
+  }
+): Promise;  
+```
+
+**Parameters**
+
+`index`: Index of the image to process.
+
+`options`:
+
+* `settings`: Settings of the recognition.
+  * `language`: Specify the code of language for recognition (`en`, `fr`, e.g.). See the table below listing supported languages.
+  * `pageOrientation`: Specify the orientation of the page. The OCR will rotate the page before recognition. Please refer to [`EnumDWT_PageOrientation`](/_articles/info/api/Dynamsoft_Enum.md#dynamsoftdwtenumdwt_pageorientation).
+* `rects`: An array of rectangles to limit the regions for recognition.
+
+**Return Values**
+
+Promise of the [`OCRResult`](/_articles/info/api/interfaces.md#ocrresult) object.
+
+**Supported Languages**
+
+| Language Name              | Code  |
+| :------------------------- | :---- |
+| English                    | en    |
+| French                     | fr    |
+| Spanish                    | es    |
+| German                     | de    |
+| Italian                    | it    |
+| Portuguese                 | pt    |
+
+**Availability**
+
+

+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
H5(Windows)H5(macOS)H5(Linux)
v19.3+ not supported not supported

+

+
+
+---
+
+## SaveToPath()
+
+Save the result to a local path.
+
+**Syntax**
+
+```ts
+SaveToPath(
+  indices: number[],  
+  outputFormat: Dynamsoft.DWT.EnumDWT_OCRKitOutputFormat | number,  
+  path?: string
+): Promise;
+```
+
+**Parameters**
+
+`indices`: Indices of the pages to save.
+
+`outputFormat`: Please refer to [`EnumDWT_OCRKitOutputFormat`](/_articles/info/api/Dynamsoft_Enum.md#dynamsoftdwtenumdwt_ocrkitoutputformat).
+
+`path`: System's absolute path for saving. If not specified, it will show the file saving dialog to select an output path.
+
+**Return Values**
+
+A `boolean` result indicating the success of the operation.
+
+**Availability**
+
+

+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
H5(Windows)H5(macOS)H5(Linux)
v19.3+ not supported not supported

+

+
+
+---
+
+## SaveAsBase64()
+
+Save the result as base64.
+
+**Syntax**
+
+```ts
+SaveAsBase64(
+  indices: number[],
+  outputFormat: Dynamsoft.DWT.EnumDWT_OCRKitOutputFormat | number
+): Promise;
+```
+
+**Parameters**
+
+`indices`: Indices of the pages to save.
+
+`outputFormat`: Please refer to [`EnumDWT_OCRKitOutputFormat`](/_articles/info/api/Dynamsoft_Enum.md#dynamsoftdwtenumdwt_ocrkitoutputformat).
+
+**Return Values**
+
+A base64 string result.
+
+**Availability**
+
+

+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
H5(Windows)H5(macOS)H5(Linux)
v19.3+ not supported not supported

+

+
+
+---
+
+## SaveAsBlob()
+
+Save the result as blob.
+
+**Syntax**
+
+```ts
+SaveAsBlob(
+  indices: number[],  
+  outputFormat: Dynamsoft.DWT.EnumDWT_OCRKitOutputFormat | number
+): Promise;
+```
+
+**Parameters**
+
+`indices`: Indices of the pages to save.
+
+`outputFormat`: Please refer to [`EnumDWT_OCRKitOutputFormat`](/_articles/info/api/Dynamsoft_Enum.md#dynamsoftdwtenumdwt_ocrkitoutputformat).
+
+**Return Values**
+
+A `blob` result.
+
+**Availability**
+
+

+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
H5(Windows)H5(macOS)H5(Linux)
v19.3+ not supported not supported

+

\ No newline at end of file
diff --git a/_articles/info/api/Dynamsoft_Enum.md b/_articles/info/api/Dynamsoft_Enum.md
index ee5a0b12..23119379 100644
--- a/_articles/info/api/Dynamsoft_Enum.md
+++ b/_articles/info/api/Dynamsoft_Enum.md
@@ -918,3 +918,39 @@ Note: The below enumeration value has been deprecated as of 18.4.
 | ArrayBuffer | 2     |
 | XML         | 3     |
 | JSON        | 4     |
+
+
+## `Dynamsoft.DWT.EnumDWT_OCRKitOutputFormat`
+
+| Label                      | Value |
+| :------------------------- | :---- |
+| TEXT                       | 0     |
+| PDF_PLAIN_TEXT             | 1     |
+| PDF_WITH_EXTRA_TEXTLAYER   | 2     |
+
+
+Note:
+
+`PDF_PLAIN_TEXT` will only keep a text layer of the OCRed text for each page.
+
+`PDF_WITH_EXTRA_TEXTLAYER` will add an extra invisible text layer of the OCRed text above each page.
+
+## `Dynamsoft.DWT.EnumDWT_PageOrientation`
+
+| Label                      | Value |
+| :------------------------- | :---- |
+| AUTO                       | -1    |
+| ANGLE_0                    | 0     |
+| ANGLE_90                   | 90    |
+| ANGLE_180                  | 180   |
+| ANGLE_270                  | 270   |
+
+## `Dynamsoft.DWT.EnumDWT_PageOrientationDetectionMode`
+
+| Label                      | Value |
+| :------------------------- | :---- |
+| FAST                       | 0     |
+| BALANCE                    | 1     |
+| PRECISION                  | 2     |
+
+  
\ No newline at end of file
diff --git a/_articles/info/api/appendix.md b/_articles/info/api/appendix.md
index 99381073..7e3351d3 100644
--- a/_articles/info/api/appendix.md
+++ b/_articles/info/api/appendix.md
@@ -50,6 +50,7 @@ description: Dynamic Web TWAIN SDK Documentation API Appendix Page
 |-1090 | BMP format error or not supported |
 |-1100 | PNG format error or not supported |
 |-1110 | Unrecognized file extension |
+|-1126 | The specified module could not be found. |
 |-1200 | PDF format error or not supported |
 |-2000 | Can not initiate the internet session |
 |-2001 | HTTP request error |
@@ -58,9 +59,11 @@ description: Dynamic Web TWAIN SDK Documentation API Appendix Page
 |-2004 | FTP download file is too large |
 |-2007 | The system is busy, some operations are not completed. Please try later |
 |-2137 | Cross-Origin Resource Sharing (CORS) policy is blocking the access. Please contact the Administrator to configure 'Access-Control-Allow-Origin'.|
+|-2120 | There must be at least one OCR result. \| No detection model found in local. \| No recognition model found in local.  |
 |-2207 | The Dynamic Web TWAIN Service installed on your computer is outdated and no longer works with the JavaScript code on the website |
 |-2208 | The connection with the local Dynamic Web TWAIN Service encountered a problem and has been reset |
 |-2209 | The HTML5 (Chrome&Firefox) edition does not support this method or property |
+|-2217 | Missing dependent files for OCR.  |
 |-2300 | Http upload error: the HTTP Server cannot empty |
 |-2301 | Network error |
 |-2302 | The result format is invalid |
@@ -99,6 +102,7 @@ description: Dynamic Web TWAIN SDK Documentation API Appendix Page
 |-2337 | The current product key does not include a license for reading DataMatrix barcode, please contact the site administrator |
 |-2338 | The current product key does not support Webcam, please contact the site administrator |
 |-2339 | The current product key does not support pdf rasterizer, please contact the site administrator |
+|-2340 | The license for the module ocr kit is not found or has expired. |
 |-2342 | The domain of your current site does not match the domain bound in the current product key, please contact the site administrator |
 |-2343 | The current product key does not support your browser, please contact the site administrator |
 |-2344 | The current product key does not support Windows OS, please contact the site administrator |
@@ -135,6 +139,7 @@ description: Dynamic Web TWAIN SDK Documentation API Appendix Page
 |-2619 | Only single index selection is allowed when enumImageFormatType is set to url. |
 |-2621 | Dynamsoft.DWT.Containers was not set. |
 |-2622 | Please do not set enumImageType to "IT_MULTIPAGE_PDF", "IT_MULTIPAGE_TIF" or "IT_ALL". |
+|-2701 | The OCR feature is only supported on x64 versions of Windows.  |
 |-2800 | Please make sure the Dynamic Web TWAIN Service has been installed. |
 |-2801 | Invalid response data was returned from the Dynamic Web TWAIN Service. |
 |-2802 | The file dynamsoft.webtwain.config.js timed out while loading. |
diff --git a/_articles/info/api/index.md b/_articles/info/api/index.md
index 85ad58f5..c6fdf768 100644
--- a/_articles/info/api/index.md
+++ b/_articles/info/api/index.md
@@ -570,6 +570,13 @@ breadcrumbText: API Reference
 | [`SetPassword()`](/_articles/info/api/Addon_PDF.md#setpassword)           | [`SetResolution()`](/_articles/info/api/Addon_PDF.md#setresolution)         | [`Write.Setup()`](/_articles/info/api/Addon_PDF.md#writesetup)                          | [`GetReaderOptions()`](/_articles/info/api/Addon_PDF.md#getreaderoptions) |
 | [`SetReaderOptions()`](/_articles/info/api/Addon_PDF.md#setreaderoptions) |
 
+## OCR
+
+### Methods
+
+| [`GetInstalledOCRInfo()`](/_articles/info/api/Addon_OCR.md#getinstalledocrinfo) | [`DetectPageOrientation()`](/_articles/info/api/Addon_OCR.md#detectpageorientation) | [`Recognize()`](/_articles/info/api/Addon_OCR.md#recognize) | [`SaveToPath()`](/_articles/info/api/Addon_OCR.md#savetopath) |
+| [`SaveAsBase64()`](/_articles/info/api/Addon_OCR.md#saveasbase64) | [`SaveAsBlob()`](/_articles/info/api/Addon_OCR.md#saveasblob) |
+
 

From 808c2700fcdb2892dbf3cd3af3f3c14e2b9b8d08 Mon Sep 17 00:00:00 2001
From: tony-xlh 
Date: Mon, 10 Nov 2025 11:20:46 +0800
Subject: [PATCH 06/70] add note about rotated ocr result

---
 _articles/info/api/interfaces.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/_articles/info/api/interfaces.md b/_articles/info/api/interfaces.md
index 8e99f15b..f68cf9f3 100644
--- a/_articles/info/api/interfaces.md
+++ b/_articles/info/api/interfaces.md
@@ -1710,7 +1710,7 @@ interface OCRInfo {
 
 ### OCRResult
 
-The OCR result of one page.
+The OCR result of one page. If the page is rotated, the geometry will be based on the orientation-corrected version.
 
 **Syntax**
 

From 34351f3b2d26f827aced576283e1a823a3bfe039 Mon Sep 17 00:00:00 2001
From: tony-xlh 
Date: Wed, 19 Nov 2025 10:17:01 +0800
Subject: [PATCH 07/70] add note about Linux service

---
 _articles/info/schedule/Stable.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/_articles/info/schedule/Stable.md b/_articles/info/schedule/Stable.md
index 801097c9..add085df 100644
--- a/_articles/info/schedule/Stable.md
+++ b/_articles/info/schedule/Stable.md
@@ -28,6 +28,7 @@ description: Dynamic Web TWAIN SDK Documentation Schedule Stable Release Page
 
 * Fixed the blurry image issue when the viewer's mode is set to 1x1.
 * Fixed a license issue of RemoteScan.
+* Fixed the auto start of the service on Linux not using GUI
 
 
 

From 3a6b24deb69eb27cd469b28a3d5b8d63468883a7 Mon Sep 17 00:00:00 2001
From: tony-xlh 
Date: Thu, 20 Nov 2025 18:04:30 +0800
Subject: [PATCH 08/70] add note about multi-user service installation

---
 _articles/info/schedule/Stable.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/_articles/info/schedule/Stable.md b/_articles/info/schedule/Stable.md
index add085df..6648b272 100644
--- a/_articles/info/schedule/Stable.md
+++ b/_articles/info/schedule/Stable.md
@@ -22,6 +22,7 @@ description: Dynamic Web TWAIN SDK Documentation Schedule Stable Release Page
 * Added checking of the [local network access permission](/_articles/faq/chromium-142-local-network-access-issue.md) introduced in Chrome 142.
 * Added extra settings for [`PrintEx()`](/_articles/info/api/WebTwain_IO.md#printex).
 * Added prevention of service installation on macOS versions lower than 10.15.
+* Added support for service installation for multiple users (Windows only).
 * Updated third-party libraries to enhance security.
 
 ### Bug Fixes

From 0c5d8404b243529fc62706904678b4abf4c5336e Mon Sep 17 00:00:00 2001
From: tony-xlh 
Date: Wed, 26 Nov 2025 16:36:40 +0800
Subject: [PATCH 09/70] add EnableLocalNetworkMixedContent

---
 _articles/info/api/Dynamsoft_WebTwainEnv.md | 40 ++++++++++++++++++---
 1 file changed, 36 insertions(+), 4 deletions(-)

diff --git a/_articles/info/api/Dynamsoft_WebTwainEnv.md b/_articles/info/api/Dynamsoft_WebTwainEnv.md
index 987384dd..b5211772 100644
--- a/_articles/info/api/Dynamsoft_WebTwainEnv.md
+++ b/_articles/info/api/Dynamsoft_WebTwainEnv.md
@@ -20,10 +20,10 @@ description: Dynamic Web TWAIN SDK Documentation API Reference Global APIs Page
 
 **Properties**
 
-| [`Autoload`](#autoload)       | [`Containers`](#containers)                                 | [`CustomizableDisplayInfo`](#customizabledisplayinfo)           | [`DeviceFriendlyName`](#devicefriendlyname) |
-| [`Host`](#host)               | [`IfAddMD5InUploadHeader`](#ifaddmd5inuploadheader)         | [`IfConfineMaskWithinTheViewer`](#ifconfinemaskwithintheviewer) | [`JSVersion`](#jsversion)                   |
-| [`ProductKey`](#productkey)   | [`ResourcesPath`](#resourcespath)                           | [`ServiceInstallerLocation`](#serviceinstallerlocation)         | [`UseDefaultViewer`](#usedefaultviewer)     |
-| [`IfCheckCORS`](#ifcheckcors) | [`IfAlwaysFocusOnPopupWindow`](#ifalwaysfocusonpopupwindow) |                                                                 |                                             |
+| [`AutoLoad`](#autoload) | [`Containers`](#containers) | [`CustomizableDisplayInfo`](#customizabledisplayinfo) | [`DeviceFriendlyName`](#devicefriendlyname) |
+| [`EnableLocalNetworkMixedContent`](#enablelocalnetworkmixedcontent) | [`Host`](#host) | [`IfAddMD5InUploadHeader`](#ifaddmd5inuploadheader) | [`IfConfineMaskWithinTheViewer`](#ifconfinemaskwithintheviewer) |
+| [`JSVersion`](#jsversion) | [`ProductKey`](#productkey) | [`ResourcesPath`](#resourcespath) | [`ServiceInstallerLocation`](#serviceinstallerlocation) |
+| [`UseDefaultViewer`](#usedefaultviewer) | [`IfCheckCORS`](#ifcheckcors) | [`IfAlwaysFocusOnPopupWindow`](#ifalwaysfocusonpopupwindow) | |
 
 **Events**
 
@@ -805,6 +805,38 @@ DeviceFriendlyName: string;
 
 ---
 
+## EnableLocalNetworkMixedContent
+
+If enabled, the library will use HTTP to communicate with the service. The host must be `localhost` or `127.0.0.1`. The default value is `false`.
+
+**Syntax**
+
+```typescript
+EnableLocalNetworkMixedContent: boolean;
+```
+
+**Availability**
+
+

+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
H5(Windows)H5(macOS)H5(Linux)
v19.3+v19.3+v19.3+

+

+
+----
+
 ## Host
 
 Specify the target address for the local Dynamic Web TWAIN Service.

From d5ed1487020bae798b2f399e6445108fc9432e8f Mon Sep 17 00:00:00 2001
From: tony-xlh 
Date: Wed, 26 Nov 2025 16:49:53 +0800
Subject: [PATCH 10/70] update release notes

---
 _articles/info/schedule/Stable.md | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/_articles/info/schedule/Stable.md b/_articles/info/schedule/Stable.md
index 6648b272..60d11ec9 100644
--- a/_articles/info/schedule/Stable.md
+++ b/_articles/info/schedule/Stable.md
@@ -23,6 +23,8 @@ description: Dynamic Web TWAIN SDK Documentation Schedule Stable Release Page
 * Added extra settings for [`PrintEx()`](/_articles/info/api/WebTwain_IO.md#printex).
 * Added prevention of service installation on macOS versions lower than 10.15.
 * Added support for service installation for multiple users (Windows only).
+* Added an [`EnableLocalNetworkMixedContent`](/_articles/info/api/Dynamsoft_WebTwainEnv.md#enablelocalnetworkmixedcontent) property.
+* Improved the performance of [`RemoveAllSelectedImages()`](/_articles/info/api/WebTwain_Buffer.md#removeallselectedimages) by triggering [`OnBufferChanged`](/_articles/info/api/WebTwain_Buffer.md#onbufferchanged) and [`OnBitmapChanged`](/_articles/info/api/WebTwain_Buffer.md#onbitmapchanged) events only once.
 * Updated third-party libraries to enhance security.
 
 ### Bug Fixes
@@ -32,7 +34,6 @@ description: Dynamic Web TWAIN SDK Documentation Schedule Stable Release Page
 * Fixed the auto start of the service on Linux not using GUI
 
 
-
 ## 19.2 (08/26/2025) 
 
 ### Highlights

From ccfcc30d87b30ea0c340d68e9c6588fd9402b7fd Mon Sep 17 00:00:00 2001
From: Tony-Dynamsoft <112376616+tony-xlh@users.noreply.github.com>
Date: Wed, 26 Nov 2025 16:53:45 +0800
Subject: [PATCH 11/70] Update Stable.md

---
 _articles/info/schedule/Stable.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/_articles/info/schedule/Stable.md b/_articles/info/schedule/Stable.md
index 60d11ec9..c76a908d 100644
--- a/_articles/info/schedule/Stable.md
+++ b/_articles/info/schedule/Stable.md
@@ -10,7 +10,7 @@ description: Dynamic Web TWAIN SDK Documentation Schedule Stable Release Page
 
 # Stable Releases
 
-## 19.3 (12/01/2025) 
+## 19.3 (12/09/2025) 
 
 ### New Features
 

From 7da47e4fc072feb036e511558db807e78dbe0139 Mon Sep 17 00:00:00 2001
From: tony-xlh 
Date: Fri, 28 Nov 2025 15:17:10 +0800
Subject: [PATCH 12/70] fix the code in the OCR guide

---
 _articles/extended-usage/ocr.md | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/_articles/extended-usage/ocr.md b/_articles/extended-usage/ocr.md
index 774e8e25..bfb34afb 100644
--- a/_articles/extended-usage/ocr.md
+++ b/_articles/extended-usage/ocr.md
@@ -20,7 +20,7 @@ Dynamic Web TWAIN provides an OCR add-on to extract text in your scanned images.
 
 ### Step One - Install the OCR Package
 
-Download `DynamicWebTWAINOCRPack.zip`, unzip it and run `Install.cmd` as admin to install the OCR package. It will copy the `ocr` folder to the service's [installation folder](/_articles/extended-usage/dynamsoft-service-configuration.md#installation-folder).
+Download `DynamicWebTWAINOCRPack.zip`, unzip it and run `Install.cmd` as admin to install the OCR package. It will copy the `ocr` folder to the service's [installation folder](/_articles/extended-usage/dynamsoft-service-configuration.md#installation-folder). (You need to install Dynamic Web TWAIN Service beforehand.)
 
 ### Step Two - Write a Basic Document Scanning Page
 
@@ -264,7 +264,7 @@ Here is the complete code of the demo.
     
Output: