---
layout: default-layout
noTitleIndex: true
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title: How can I support WIA scanner drivers in my application?
keywords: Dynamic Web TWAIN, Capture/ Image Source, WIA
breadcrumbText: How can I support WIA scanner drivers in my application?
description: How can I support WIA scanner drivers in my application?
date: 2023-05-25 04:19:02 +0000
last_modified: 2026-07-29 08:01:45 +0000
---

# Capture/Image Source

## How can I support WIA scanner drivers in my application?

Prior to Dynamic Web TWAIN version 18.2, WIA drivers are not supported and TWAIN drivers are recommended. Please refer to [this article](/_articles/faq/difference-between-Twain-and-wia.md){:target="_blank"} for the differences between WIA and TWAIN drivers.

As of Dynamic Web TWAIN version 18.2, we officially support WIA 2.0. By comparison, `WIA` can only control a very limited set of general capabilities of the device, while `TWAIN` can control all standard and even custom capabilities of the device. In addition, `WIA` has only two transfer modes (Memory, File), while `TWAIN` has three (Native, Memory, File).

Since Dynamic Web TWAIN v18.0, we introduced a new set of scanner related APIs.
To compatible with both TWAIN and WIA 2.0, 
- If your application is already using the new set of APIs below, no application change is required.
- If not, replace the old APIs with the matching new APIs.

| New APIs (supports WIA) | Old APIs |
|:-|:-|
| [GetDevicesAsync()](https://www.dynamsoft.com/web-twain/docs/info/api/WebTwain_Acquire.html#getdevicesasync) | [GetSourceNames()](https://www.dynamsoft.com/web-twain/docs/info/api/WebTwain_Acquire.html#getsourcenames), [GetSourceNamesAsync()](https://www.dynamsoft.com/web-twain/docs/info/api/WebTwain_Acquire.html#getsourcenamesasync)|
| [SelectDeviceAsync()](https://www.dynamsoft.com/web-twain/docs/info/api/WebTwain_Acquire.html#selectdeviceasync) | [SelectSourceByIndex()](https://www.dynamsoft.com/web-twain/docs/info/api/WebTwain_Acquire.html#selectsourcebyindex), [SelectSourceByIndexAsync()](https://www.dynamsoft.com/web-twain/docs/info/api/WebTwain_Acquire.html#selectsourcebyindexasync) |
| [SelectSourceAsync()](https://www.dynamsoft.com/web-twain/docs/info/api/WebTwain_Acquire.html#selectsourceasync) | [SelectSource()](https://www.dynamsoft.com/web-twain/docs/info/api/WebTwain_Acquire.html#selectsource) |
| [AcquireImageAsync()](https://www.dynamsoft.com/web-twain/docs/info/api/WebTwain_Acquire.html#acquireimageasync) | [AcquireImage()](https://www.dynamsoft.com/web-twain/docs/info/api/WebTwain_Acquire.html#acquireimage) |

### Example Code

```javascript
DWTObject.GetDevicesAsync(Dynamsoft.DWT.EnumDWT_DeviceType.TWAINSCANNER|Dynamsoft.DWT.EnumDWT_DeviceType.WIASCANNER).then((deviceList)=>{
  return DWTObject.SelectDeviceAsync(deviceList[0])  //Select the first device
}).then(()=>{
    return DWTObject.AcquireImageAsync({}) 
}).catch((e)=>{
    console.error(e)
})
```

### Difference between the WIASCANNER and WIATWAINSCANNER DeviceType
To support the WIA protocol in v18.2+, we added a new enumeration `WIASCANNER` to [Dynamsoft.DWT.EnumDWT_DeviceType](https://www.dynamsoft.com/web-twain/docs/info/api/Dynamsoft_Enum.html?ver=latest&&cVer=true#dynamsoftdwtenumdwt_devicetype). The enumeration named `WIATWAINSCANNER` represents WIA sources mapped through the TWAIN protocol after packaging by Microsoft. It was used in previous versions of Dynamic Web TWAIN but has been deprecated since v18.2 and will be removed in a future version; please use `WIASCANNER` instead for new development.