how to use GifBitmapEncoder in winform?

Question

how to use GifBitmapEncoder in winform?

mc 7,186

I want to create gif by bitmaps and it seems that I can not use the gifBitmapEncoder

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Answer accepted by question author

Jack Dang (WICLOUD CORPORATION) 18,975 Microsoft External Staff Moderator

Hi @mc ,

Thanks for reaching out.

The code snippets below are just for reference, so you may need to adjust them to fit your project structure and requirements.

GifBitmapEncoder belongs to WPF, so it is not available in a plain WinForms project by default. That is why it seems like you cannot use it directly. If you want to use that encoder in a WinForms app, you need to enable WPF support in the project and then convert your System.Drawing.Bitmap objects into WPF image frames before saving.

If your project is SDK-style, add this to the project file:

<PropertyGroup>
  <UseWindowsForms>true</UseWindowsForms>
  <UseWPF>true</UseWPF>
</PropertyGroup>

After that, you can create the GIF like this:

using System.Drawing;
using System.Drawing.Imaging;
using System.Windows.Media.Imaging;

public static void SaveGif(IEnumerable<Bitmap> bitmaps, string outputPath)
{
    var encoder = new GifBitmapEncoder();

    foreach (Bitmap bitmap in bitmaps)
    {
        using var ms = new MemoryStream();
        bitmap.Save(ms, ImageFormat.Png);
        ms.Position = 0;

        var frame = BitmapFrame.Create(
            ms,
            BitmapCreateOptions.PreservePixelFormat,
            BitmapCacheOption.OnLoad);

        encoder.Frames.Add(frame);
    }

    using var fs = new FileStream(outputPath, FileMode.Create, FileAccess.Write);
    encoder.Save(fs);
}

You can call it like this:

var frames = new List<Bitmap>
{
    new Bitmap("frame1.png"),
    new Bitmap("frame2.png"),
    new Bitmap("frame3.png")
};

SaveGif(frames, "output.gif");

foreach (var bmp in frames)
{
    bmp.Dispose();
}

If you only need to save a single bitmap as a normal GIF image, the simpler WinForms-friendly option is just:

bitmap.Save("output.gif", ImageFormat.Gif);

One thing to keep in mind is that if you need a real animated GIF with control over frame delays and looping, GifBitmapEncoder can be a bit limited. In that case, a library like Magick.NET or ImageSharp is usually a smoother option for a WinForms app.

Hope this helps! If my answer was helpful, I would greatly appreciate it if you could follow the instructions here so others with the same problem can benefit as well.

mc 7,186 Reputation points

2026-05-13T11:25:59.0366667+00:00

I am using asp.net core So I do not want UseWpf can I add lib ?
mc 7,186 Reputation points

2026-05-13T11:32:41.72+00:00

I am using system.drawing.commons
mc 7,186 Reputation points

2026-05-13T11:33:09.5+00:00

can I create gif from bitmap in winform?
Jack Dang (WICLOUD CORPORATION) 18,975 Reputation points Microsoft External Staff Moderator

2026-05-14T03:17:19.2233333+00:00
Hi @mc ,

Thanks for the update.

Since you do not want to use WPF, I would suggest using a library instead.

If you only need to save a single Bitmap as a GIF, System.Drawing.Common can do that:

bitmap.Save("output.gif", ImageFormat.Gif);

If you want to create an animated GIF from multiple bitmaps, then I would recommend Magick.NET or ImageSharp instead, because they are a better fit for that scenario.

Also, if your ASP.NET Core app may run outside Windows, ImageSharp or Magick.NET would be the safer choice.

So yes, if this is WinForms on Windows, you can create a GIF from a Bitmap.
mc 7,186 Reputation points

2026-05-14T04:05:15.2133333+00:00

is ImageSharp this ?
mc 7,186 Reputation points

2026-05-14T04:28:05.0933333+00:00

I have tried the Magick.Net it can not use bitmap but can use the path of the image can I use the Bitmap not the path ?
Jack Dang (WICLOUD CORPORATION) 18,975 Reputation points Microsoft External Staff Moderator

2026-05-14T06:31:06.0733333+00:00

Hi @mc ,

Yes, that is the SixLabors.ImageSharp package.

For Magick.NET, you are not limited to passing only a file path. You can also work with images in memory, so if you already have a Bitmap, you can use that instead of saving it to disk first. One option is to load the Bitmap through a MemoryStream, and there is also a Magick.NET.SystemDrawing package for working with System.Drawing types more directly.

1 additional answer

Your answer

mc 7,186 Reputation points

2026-05-13T11:25:59.0366667+00:00

I am using asp.net core So I do not want UseWpf can I add lib ?
mc 7,186 Reputation points

2026-05-13T11:32:41.72+00:00

I am using system.drawing.commons
mc 7,186 Reputation points

2026-05-13T11:33:09.5+00:00

can I create gif from bitmap in winform?
Jack Dang (WICLOUD CORPORATION) 18,975 Reputation points Microsoft External Staff Moderator

2026-05-14T03:17:19.2233333+00:00

Hi @mc ,

Thanks for the update.

Since you do not want to use WPF, I would suggest using a library instead.

If you only need to save a single Bitmap as a GIF, System.Drawing.Common can do that:

bitmap.Save("output.gif", ImageFormat.Gif);

If you want to create an animated GIF from multiple bitmaps, then I would recommend Magick.NET or ImageSharp instead, because they are a better fit for that scenario.

Also, if your ASP.NET Core app may run outside Windows, ImageSharp or Magick.NET would be the safer choice.

So yes, if this is WinForms on Windows, you can create a GIF from a Bitmap.
mc 7,186 Reputation points

2026-05-14T04:05:15.2133333+00:00

is ImageSharp this ?
mc 7,186 Reputation points

2026-05-14T04:28:05.0933333+00:00

I have tried the Magick.Net it can not use bitmap but can use the path of the image can I use the Bitmap not the path ?
Jack Dang (WICLOUD CORPORATION) 18,975 Reputation points Microsoft External Staff Moderator

2026-05-14T06:31:06.0733333+00:00

Hi @mc ,

Yes, that is the SixLabors.ImageSharp package.

For Magick.NET, you are not limited to passing only a file path. You can also work with images in memory, so if you already have a Bitmap, you can use that instead of saving it to disk first. One option is to load the Bitmap through a MemoryStream, and there is also a Magick.NET.SystemDrawing package for working with System.Drawing types more directly.

Answer 1

GifBitmapEncoder is a WPF imaging class (System.Windows.Media.Imaging in PresentationCore.dll). It is not part of Windows Forms or System.Drawing, so it cannot be used directly in a typical WinForms-only project without adding WPF references and using interop. For a WinForms application, the supported and simpler approach is to use the GDI+ encoders in System.Drawing.

To create a GIF from bitmaps in WinForms, use System.Drawing.Image/Bitmap and save with the GIF encoder:

using System.Drawing;
using System.Drawing.Imaging;

// Example: create an image and save as GIF
using (var bmp = new Bitmap(200, 200))
using (var g = Graphics.FromImage(bmp))
{
    g.Clear(Color.White);
    g.FillEllipse(Brushes.Red, 50, 50, 100, 100);

    // Save as GIF using GDI+ encoder
    bmp.Save("output.gif", ImageFormat.Gif);
}

System.Drawing (managed GDI+) has built-in encoders and decoders for BMP, GIF, JPEG, PNG, and TIFF, which is the recommended way to handle GIFs in WinForms.

If GifBitmapEncoder must be used, the project needs to reference WPF assemblies (PresentationCore, WindowsBase, etc.) and then use WPF imaging types (BitmapSource, BitmapFrame) instead of System.Drawing.Bitmap, but that is a WPF scenario rather than a WinForms one.

References: