Imaging Library for C# and VB.NET Applications

System Requirements

GemBox.Imaging requires only .NET, it doesn't have any other dependency.
You can use it on:

• .NET 6.0+ on Windows
• .NET Standard 2.0+ (for Linux, macOS, Android, iOS, …)
• .NET Framework 3.5+

Hello World

The first step in using the GemBox.Imaging library is to add a reference to GemBox.Imaging.dll in your C# or VB.NET project. There are three ways how to do that.

a) Add from NuGet:

You can add GemBox.Imaging as a package by using the following command from the NuGet Package Manager Console:

Install-Package GemBox.Imaging

Or you can search and add GemBox.Imaging from the NuGet Package Manager.

b) Or add from DLL file:

You can download GemBox.Imaging.dll file from this page and add a reference by browsing to it.

c) Or add from Setup:

You can download the GemBox.Imaging Setup from this page. After installing the setup, you can add a reference to GemBox.Imaging.dll from the Global Assembly Cache (GAC).

The second step is to add a directive for the GemBox.Imaging namespace.

For a C# project, use: using GemBox.Imaging;
For a VB.NET project, use: Import GemBox.Imaging

The third step is to set the license key to use GemBox.Imaging in one of its working modes.

To use a Free mode in a C# project, use: ComponentInfo.SetLicense("FREE-LIMITED-KEY");
To use a Free mode in a VB.NET project, use: ComponentInfo.SetLicense("FREE-LIMITED-KEY")

You can read more about GemBox.Imaging's working modes on the Evaluation and Licensing help page.

The last step is to write your application-specific imaging code, like the following example code that shows how to load example image, resize it to thumbnail size and then save Image instance to image file.

using System;
using GemBox.Imaging;

class Program
{
    static void Main()
    {
        // If using the Professional version, put your serial key below.
        ComponentInfo.SetLicense("FREE-LIMITED-KEY");

        using (var image = Image.Load("%InputFileName%"))
        {
            // Resizing the image
            image.Resize(64, 64);

            // Saving the resized image
            image.Save("HelloWorld.%OutputFileType%");
        }
    }
}

Imports System
Imports GemBox.Imaging

Module Program

	Sub Main()

		' If using the Professional version, put your serial key below.
		ComponentInfo.SetLicense("FREE-LIMITED-KEY")
		
		Using image As Image = Image.Load("%InputFileName%")
			' Resizing the image
			image.Resize(64, 64)

			' Saving the resized image
			image.Save("HelloWorld.%OutputFileType%")
		End Using
	End Sub
End Module