Olexandr Zelenskyi

Hello. You can add C# Class Library to your project (.NET 6/7), NuGet packet "[System.Drawing.Common](https://www.nuget.org/packages/System.Drawing.Common/)" (available for [windows only](https://learn.microsoft.com/en-us/dotnet/api/system.drawing.bitmap?view=dotnet-plat-ext-7.0)). Also you need add using: `using Image = System.Drawing.Image;` After this...

Picturebox can't work with TGA format. It's only possible way to convert TGA to Bitmap. If TGA has Alpha, it will be in Bitmap too.