NAPS2.Wia 1.0.2

The ID prefix of this package has been reserved for one of the owners of this package by Prefix Reserved
There is a newer version of this package available.
See the version list below for details.
dotnet add package NAPS2.Wia --version 1.0.2
NuGet\Install-Package NAPS2.Wia -Version 1.0.2
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="NAPS2.Wia" Version="1.0.2" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add NAPS2.Wia --version 1.0.2
#r "nuget: NAPS2.Wia, 1.0.2"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
// Install NAPS2.Wia as a Cake Addin
#addin nuget:?package=NAPS2.Wia&version=1.0.2

// Install NAPS2.Wia as a Cake Tool
#tool nuget:?package=NAPS2.Wia&version=1.0.2



NAPS2.Wia is a standalone component that acts as a low-level wrapper around Windows Image Acquisition (WIA).

Compared to the COM-based wiaaut.dll, you get:

  • WIA 2.0 support
  • Better feeder compatibility
  • Idiomatic .NET interface

If you're looking for a higher-level and easier-to-use scanning interface, check out NAPS2.Sdk.


using var deviceManager = new WiaDeviceManager();

// Prompt the user to select a scanner
using var device = deviceManager.PromptForDevice();

// Select either "Flatbed" or "Feeder"
using var item = device.FindSubItem("Feeder");

// Scan all pages in the feeder at once

// Enable duplex scanning

// Set up the scan
using var transfer = item.StartTransfer();
transfer.PageScanned += (sender, args) =>
    using (args.Stream)
        var bitmap = new Bitmap(args.Stream);
        // Do something with the image

// Do the actual scan

Known issues

  • Native acquisition with WIA 1.0 only works in 32-bit processes. NAPS2.Sdk provides a 32-bit worker process that can be used from 64-bit applications. Most users shouldn't be affected since WIA 2.0 has no such issue.

Supported Platforms

  • .NET Framework 4.0 (Windows XP+)
  • .NET Core 2.0+ (Windows)
  • .NET Standard 2.0+ (Windows)


Unlike most of NAPS2.Sdk which is licensed under the LGPL, NAPS2.Wia uses the more permissive MIT license.

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 was computed.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed. 
.NET Core netcoreapp2.0 is compatible.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 was computed. 
.NET Framework net40 is compatible.  net403 was computed.  net45 was computed.  net451 was computed.  net452 was computed.  net46 was computed.  net461 was computed.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.
  • .NETCoreApp 2.0

    • No dependencies.
  • .NETFramework 4.0

    • No dependencies.
  • .NETStandard 2.0

    • No dependencies.

NuGet packages (2)

Showing the top 2 NuGet packages that depend on NAPS2.Wia:

Package Downloads
NAPS2.Sdk The ID prefix of this package has been reserved for one of the owners of this package by

NAPS2.Sdk is a fully-featured scanning library, supporting WIA, TWAIN, SANE, and ESCL scanners on Windows, Mac, and Linux.


NAPS2.Sdk is a fully-featured scanning library, supporting WIA, TWAIN, SANE, and ESCL scanners on Windows, Mac, and Linux.

GitHub repositories (1)

Showing the top 1 popular GitHub repositories that depend on NAPS2.Wia:

Repository Stars
Scan documents to PDF and more, as simply as possible.
Version Downloads Last updated
2.0.3 3,904 8/30/2023
2.0.2 1,089 4/8/2023
1.0.3 184 4/8/2023
1.0.2 493 3/1/2023
1.0.1 1,180 12/19/2021