dynamsoft-docs · tony-xlh · Jul 31, 2026 · Jul 29, 2026 · Jul 29, 2026 · Jul 29, 2026
diff --git a/_articles/faq/XMLHttpRequest-cannot-load.md b/_articles/faq/XMLHttpRequest-cannot-load.md
@@ -7,7 +7,7 @@ keywords: Dynamic Web TWAIN, Error Troubleshooting, XMLHttpRequest
 breadcrumbText: XMLHttpRequest cannot load XXX
 description: XMLHttpRequest cannot load XXX
 date: 2021-12-03 23:26:46 +0000
-last_modified: 2026-01-23 06:35:12 -08:00
+last_modified: 2026-07-30 09:33:44 +0000
 ---
 
 # Error Troubleshooting
@@ -48,9 +48,3 @@ Try uploading to the same domain or update the server-side configuration to allo
 > After updating the server configuration file, you'll need to restart the server (i.e. IIS).
 >
 > If you are downloading a file, you might need to clear the browser cache because a cached file will not be requested again from the server, thus still no 'Access-Control-Allow-Origin' header will be presented.
->
-> If you need to send cookies/credentials (e.g., Windows Authentication), enable credentials via code:
->
-> ```javascript
-> DWTObject.HTTPRequestswithCredentials = true; // adds withCredentials:true on upload requests
-> ```
diff --git a/_articles/faq/additional-form-fields.md b/_articles/faq/additional-form-fields.md
diff --git a/_articles/faq/component-needs-to-be-installed-on-end-user-machine.md b/_articles/faq/component-needs-to-be-installed-on-end-user-machine.md
@@ -7,16 +7,16 @@ keywords: Dynamic Web TWAIN, Project Deployment and End-user Installation, insta
 breadcrumbText: Is there any component of the Dynamic Web TWAIN SDK that needs to be installed on end-user machines?
 description: Is there any component of the Dynamic Web TWAIN SDK that needs to be installed on end-user machines?
 date: 2021-12-11 06:47:21 +0000
-last_modified: 2026-01-21 15:24:26 -08:00
+last_modified: 2026-07-30 09:31:25 +0000
 ---
 
 View all FAQs about [Project Deployment and End-user Installation](
 https://www.dynamsoft.com/web-twain/docs/faq/#project-deployment-and-end-user-installation)
 
 # Is there any component of the Dynamic Web TWAIN SDK that needs to be installed on end-user machines?
 
-For the [Desktop Service Edition](/_articles/general-usage/initialization.md#desktop-service-edition){:target="_blank"}, end users need the Dynamic Web TWAIN Service installed locally (this was called “Dynamsoft Service” prior to v19.0). They are prompted to install it the first time they open your application.
+End users need the Dynamic Web TWAIN Service installed locally (this was called "Dynamsoft Service" prior to v19.0). They are prompted to install it the first time they open your application.
 
-When you upgrade Dynamic Web TWAIN, plan to reinstall the service on client machines if required. See [Update Dynamic Web TWAIN Service on the Client-side](/_articles/indepth/development/upgrade.md#update-dynamsoft-service-on-the-client-side){:target="_blank"} for details.
+When you upgrade Dynamic Web TWAIN, plan to reinstall the service on client machines if required. See [Dynamic Web TWAIN Service Configuration](/_articles/extended-usage/dynamsoft-service-configuration.md){:target="_blank"} for details.
 
-If you prefer zero client-side installation, enable Remote Scan. It routes scanning through a host machine’s service, so the browser client installs nothing. Learn how to enable it [here](/_articles/faq/how-to-enable-remote-scan.md){:target="_blank"}.
+If you prefer zero client-side installation, enable Remote Scan. It routes scanning through a host machine's service, so the browser client installs nothing. See the [Remote Scan documentation](https://www.dynamsoft.com/remote-scan/docs/introduction/){:target="_blank"} for details on how to enable it.
diff --git a/_articles/faq/create-thumbnail-viewer-to-navigate-images.md b/_articles/faq/create-thumbnail-viewer-to-navigate-images.md
@@ -7,7 +7,7 @@ keywords: Dynamic Web TWAIN, Image Viewer, navigate images, thumbnail viewer
 breadcrumbText: How can I create a thumbnail viewer to view images?
 description: How can I create a thumbnail viewer to view images?
 date: 2021-12-09 11:34:50 +0000
-last_modified: 2024-09-19 08:47:35 +0000
+last_modified: 2026-07-30 09:44:34 +0000
 ---
 
 # Image Viewer
@@ -35,10 +35,9 @@ var thumbnailViewerSettings = {
   allowKeyboardControl: true,
   allowPageDragging: true,
   allowResizing: false,
-  showPageNumber: false,
   pageBackground: "transparent",
   pageBorder: "1px solid rgb(238, 238, 238)",
-  hoverBackground: "rgb(239, 246, 253)",
+  hoverPageBackground: "rgb(239, 246, 253)",
   hoverPageBorder: "1px solid rgb(238, 238, 238)",
   placeholderBackground: "rgb(251, 236, 136)",
   selectedPageBorder: "1px solid rgb(125,162,206)",
@@ -47,4 +46,5 @@ var thumbnailViewerSettings = {
 
 var thumbnail = DWTObject.Viewer.createThumbnailViewer(thumbnailViewerSettings);
 thumbnail.show();
+thumbnail.updatePageNumberStyle({ visibility: "hidden" }); // Hide the page number on each thumbnail
 ```
diff --git a/_articles/faq/customize-ui-elements-of-image-editor.md b/_articles/faq/customize-ui-elements-of-image-editor.md
@@ -7,7 +7,7 @@ keywords: Dynamic Web TWAIN, UI Customization, customize, ui elements
 breadcrumbText: Can I customize UI elements of the built-in image editor?
 description: Can I customize UI elements of the built-in image editor?
 date: 2021-12-08 03:32:59 +0000
-last_modified: 2024-09-19 08:47:35 +0000
+last_modified: 2026-07-29 08:01:45 +0000
 ---
 
 # UI Customization
@@ -18,37 +18,40 @@ Yes, you can perform various customizations on the image editor. Some of such cu
 
 ### Can I change the language of the Editor?
 
-Yes, as shown in the sample code below, you can use the parameters `titles` and `dialogText` to specify the language used in the editor.
+Yes, as shown in the sample code below, you can use the parameters `buttons.titles` and `dialogText` to specify the language used in the editor.
 
 ```javascript
- titles: {
-            'previous': 'Previous Image',
-            'next': 'Next Image',
-            'print': 'Print Image',
-            'scan': 'Scan Documents',
-            'load': 'Load Local Images'
+ buttons: {
+   titles: {
+     'next': 'Next Image',
+     'print': 'Print Image',
+     'scan': 'Scan Documents',
+     'load': 'Load Local Images'
+   }
  }
 ```
 
 ```javascript
  dialogText: {
-        dlgRotateAnyAngle: ['Angle :', 'Interpolation:', 'Keep size', '  OK  ', 'Cancel'],
-        dlgChangeImageSize: ['New Height :', 'New Width :', 'Interpolation method:', '  OK  ', 'Cancel'],
-        saveChangedImage: ['You have changed the image, do you want to keep the change(s)?', '  Yes  ', '  No  '],
-        selectSource: ['Select Source:', 'Select', 'Cancel', 'There is no source available']
-    }
+   dlgRotateAnyAngle: ['Angle :', 'Interpolation:', 'Keep size', '  OK  ', 'Cancel'],
+   dlgChangeImageSize: ['New Height :', 'New Width :', 'Interpolation method:', '  OK  ', 'Cancel'],
+   saveChangedImage: ['You have changed the image, do you want to keep the change(s)?', '  Yes  ', '  No  '],
+   selectSource: ['Select Source:', 'Select', 'Cancel', 'There is no source available']
+ }
 ```
 
 ### Can I remove or add buttons on the toolbar of the Editor?
 
-While you can use `visibility` (as shown in the sample code below) to remove a default button(s), currently you cannot add a custom button.
+While you can use `buttons.visibility` (as shown in the sample code below) to remove a default button(s), currently you cannot add a custom button.
 
 ```javascript
-visibility: {
-            'scan': true,
-            'load': true,
-            'print': false,
-            'removeall': true
+buttons: {
+  visibility: {
+    'scan': true,
+    'load': true,
+    'print': false,
+    'removeall': true
+  }
 }
 ```
 

diff --git a/_articles/faq/detect-paper-on-flatbed.md → _articles/faq/detect-paper-on-feeder.md b/_articles/faq/detect-paper-on-flatbed.md → _articles/faq/detect-paper-on-feeder.md
@@ -2,17 +2,17 @@
 layout: default-layout
 noTitleIndex: true
 needAutoGenerateSidebar: true
-title: Can the Dynamic Web TWAIN SDK detect whether papers exist on the flatbed?
-keywords: Dynamic Web TWAIN, Capture/ Image Source, detect paper, flatbed
-breadcrumbText: Can the Dynamic Web TWAIN SDK detect whether papers exist on the flatbed?
-description: Can the Dynamic Web TWAIN SDK detect whether papers exist on the flatbed?
+title: Can the Dynamic Web TWAIN SDK detect whether papers exist in the feeder?
+keywords: Dynamic Web TWAIN, Capture/ Image Source, detect paper, feeder, ADF
+breadcrumbText: Can the Dynamic Web TWAIN SDK detect whether papers exist in the feeder?
+description: Can the Dynamic Web TWAIN SDK detect whether papers exist in the feeder?
 date: 2021-12-08 03:01:32 +0000
-last_modified: 2024-09-19 08:47:35 +0000
+last_modified: 2026-07-30 10:01:04 +0000
 ---
 
 # Capture/Image Source
 
-## Can the Dynamic Web TWAIN SDK detect whether papers exist on the flatbed?
+## Can the Dynamic Web TWAIN SDK detect whether papers exist in the feeder?
 
 Yes. You can use [IfFeederLoaded](/_articles/info/api/WebTwain_Acquire.md#iffeederloaded){:target="_blank"} API to inspect whether papers are loaded in the feeder of your current scanner. Before calling this API, please use [IfPaperDetectable](/_articles/info/api/WebTwain_Acquire.md#ifpaperdetectable){:target="_blank"} to inspect whether your current scanner hardware has a sensor to detect papers.
 
@@ -21,6 +21,7 @@ Code Example:
 ```javascript
 DWTObject.SelectSource();
 DWTObject.OpenSource();
+DWTObject.IfFeederEnabled = true;
 if(DWTObject.IfPaperDetectable)
   if(DWTObject.IfFeederLoaded)
     DWTObject.AcquireImage();

diff --git a/_articles/faq/error-message-product-key-expired.md b/_articles/faq/error-message-product-key-expired.md
@@ -7,7 +7,7 @@ keywords: Dynamic Web TWAIN, Error Troubleshooting, product key, expired
 breadcrumbText: Error message – Your Dynamic Web TWAIN product key expired
 description: Error message – Your Dynamic Web TWAIN product key expired
 date: 2021-12-03 23:26:46 +0000
-last_modified: 2022-06-10 04:40:03 +0000
+last_modified: 2026-07-29 08:01:45 +0000
 ---
 
 # Error Troubleshooting
@@ -27,5 +27,5 @@ The trial product key has expired.
 ### Resolution
 
 Follow the instructions on that pop-up which are:
-1. Request a new trial product key <a href="https://www.dynamsoft.com/customer/license/trialLicense" target="_blank">here</a>. Refer to [this article](/_articles/indepth/development/upgrade.md#update-the-license-key){:target="_blank"} to update the ProductKey
+1. Request a new trial product key <a href="https://www.dynamsoft.com/customer/license/trialLicense" target="_blank">here</a>. Refer to [Using License Keys](/_articles/general-usage/license.md){:target="_blank"} for how to configure the new ProductKey in your project
 2. Do a hard refresh or clear cache in your browser to make sure the new ProductKey is used
diff --git a/_articles/faq/flexible-to-custom-license.md b/_articles/faq/flexible-to-custom-license.md
@@ -7,11 +7,11 @@ keywords: Dynamic Web TWAIN, Licensing and Purchase, flexible, custom licensing
 breadcrumbText: Are you flexible to discuss custom licensing models?
 description: Are you flexible to discuss custom licensing models?
 date: 2021-12-04 02:34:30 +0000
-last_modified: 2024-07-15 18:12:55 +0000
+last_modified: 2026-07-29 08:01:45 +0000
 ---
 
 # Licensing and Purchase
 
 ## Are you flexible to discuss custom licensing models?
 
-Yes. We understand our standard options may not cover your need, so we are very flexible with different licensing metrics to best serve your business. Please submit your request via <a href="" target="_blank">this form</a> or directly <a href="" target="_blank">contact us</a>.
+Yes. We understand our standard options may not cover your need, so we are very flexible with different licensing metrics to best serve your business. Please submit your request via <a href="https://www.dynamsoft.com/store/dynamic-web-twain/#request-for-a-quote" target="_blank">this form</a> or directly <a href="https://www.dynamsoft.com/company/contact/" target="_blank">contact us</a>.
diff --git a/_articles/faq/generate-pdf-files.md b/_articles/faq/generate-pdf-files.md
@@ -7,7 +7,7 @@ keywords: Dynamic Web TWAIN, Addon, separate, license
 breadcrumbText: How can I generate PDF/A files?
 description: How can I generate PDF/A files?
 date: 2021-12-01 01:09:41 +0000
-last_modified: 2025-12-10 16:43:15 +0000
+last_modified: 2026-07-30 07:04:41 +0000
 ---
 
 # Addon
@@ -19,24 +19,11 @@ PDF/A is an archival format designed for long-term preservation. The following v
 
 ### Supported PDF/A Versions
 
-| PDF/A Variant |    Underlying PDF Version   |
-|:-------------:|-----------------------------|
-| `pdf/a-1b`    | **1.4** (default)           |
-| `pdf/a-2b`    | **1.5** (default), 1.6, 1.7 |
-
-### What’s the difference between PDF/A-1b and PDF/A-2b?
-Although both variants ensure that documents can be reliably displayed in the future, they differ in terms of supported PDF features and compression options.
-- PDF/A-1b
-  - Uses the older PDF 1.4 specification.
-  - **Does not support JPEG2000** or JBIG2 image compression.
-  - Does not allow transparency.
-  - May result in larger file sizes and more conversion restrictions.
-
-- PDF/A-2b
-  - Based on newer PDF versions (1.5–1.7).
-  - Supports **JPEG2000**, JBIG2, transparency, and other modern PDF features.
-  - Typically requires **fewer changes** to the source document.
-  - Usually produces **smaller output** files.
+| PDF/A Variant |    Underlying PDF Version   | Availability |
+|:-------------:|-----------------------------|--------------|
+| `pdf/a-1b`    | **1.4** (fixed)             | v19.3+       |
+| `pdf/a-2b`    | **1.7** (fixed)             | v19.3+       |
+| `pdf/a-3b`    | **1.7** (fixed)             | v19.4+       |
 
 **Recommendation:**
 For most use cases, we recommend using **`pdf/a-2b`**.
@@ -55,18 +42,18 @@ DWTObject.Addon.PDF.IsRasterizationRequired(path); // returns true or false
 
 - If you do not set `pdfaVersion`, the export uses standard PDF format (non-PDF/A).
 
-- If you set `pdfaVersion` but forget to set `version`, or set a mismatched or incorrect PDF version, Dynamic Web TWAIN automatically falls back to a default PDF version:
-  - `pdf/a-1b` → defaults to PDF `1.4`
-  - `pdf/a-2b` → defaults to PDF `1.5`
+- The `version` setting only applies when exporting standard (non-PDF/A) PDFs. Once `pdfaVersion` is set, `version` is ignored — the underlying PDF version is fixed entirely by the PDF/A variant:
+  - `pdf/a-1b` → PDF `1.4`
+  - `pdf/a-2b` / `pdf/a-3b` → PDF `1.7`
 
 ### How to Export as PDF/A
 
 Configure PDF output using [`Write.Setup()`](/_articles/info/api/Addon_PDF.md#writesetup) before calling any save function.
 
 ```javascript
 DWTObject.Addon.PDF.Write.Setup({
-    version: "1.5",          // [optional] 1.4 for "pdf/a-1b"; 1.5/1.6/1.7 for "pdf/a-2b"
-    pdfaVersion: "pdf/a-2b"  // "pdf/a-1b" or "pdf/a-2b"
+    version: "1.5",          // [optional] Only used for standard (non-PDF/A) PDFs; ignored once pdfaVersion is set
+    pdfaVersion: "pdf/a-2b"  // "pdf/a-1b", "pdf/a-2b" (since v19.3), or "pdf/a-3b" (since v19.4)
 });
 ```
 

diff --git a/_articles/faq/hide-webcam-from-source-list.md b/_articles/faq/hide-webcam-from-source-list.md
@@ -7,15 +7,15 @@ keywords: Dynamic Web TWAIN, Capture/ Image Source, hide, webcam
 breadcrumbText: Can I hide webcam devices from the select source list?
 description: Can I hide webcam devices from the select source list?
 date: 2021-12-08 03:01:32 +0000
-last_modified: 2022-06-10 04:40:03 +0000
+last_modified: 2026-07-30 09:25:56 +0000
 ---
 
 # Capture/Image Source
 
 ## Can I hide webcam devices from the select source list?
 
-Many webcam devices may use WIA drivers. As explained in this article, WIA drivers can also be detected by the Dynamic Web TWAIN SDK. If you need to exclude webcam/camera devices, you can try using [GetDeviceType](/_articles/info/api/WebTwain_Acquire.md#getdevicetype){:target="_blank"} API to verify if a source is a scanner or not. If not, you can skip it from your source list.
+Many webcam devices may use WIA drivers. As explained in this article, WIA drivers can also be detected by the Dynamic Web TWAIN SDK. For devices accessed via TWAIN, you can check whether the source supports the `CAP_CAMERAPREVIEWUI` capability using [getCapabilities](/_articles/info/api/WebTwain_Acquire.md#getcapabilities){:target="_blank"} — sources that support it are typically cameras, so you can skip them from your source list.
 
-Please note that you would need to call [OpenSource](/_articles/info/api/WebTwain_Acquire.md#opensource){:target="_blank"} API to open a source before you can inspect its device type. If there are any offline devices in the source name list, this process would be interrupted.
+Please note that you would need to call [OpenSource](/_articles/info/api/WebTwain_Acquire.md#opensource){:target="_blank"} API to open a source before you can query its capabilities. If there are any offline devices in the source name list, this process would be interrupted.
 
-Another workaround is to exclude some sources by detecting certain keywords from the source name list. E.g. you can try to exclude any source names with 'camera' or 'webcam'. Please refer to this [FAQ](/_articles/faq/hide-offline-scanners-from-source-list.md){:target="_blank"} for more details.
+A simpler workaround that doesn't require opening each source is to exclude sources by detecting certain keywords in the source name list — e.g. excluding any source names containing 'camera' or 'webcam'. Please refer to this [FAQ](/_articles/faq/hide-offline-scanners-from-source-list.md){:target="_blank"} for more details.