How to insert GIF image to PDF document in ASP.NET Core platform

The Syncfusion Essential® PDF is a .NET PDF library used to create, read, and edit PDF documents. Using this library, you can extract the images from a PDF document in ASP.NET Core.

Steps to insert the GIF image to a PDF document in ASP.NET Core programmatically:

1. Create a new C# ASP.NET Core web application project.

2. Select the web application pattern (Model-View-Controller) for the project.

3. Install the Syncfusion.Imaging.Pdf.Net.Core NuGet package as a reference to your .NET Standard application from Nuget.org.

4. A default controller with the name HomeController.cs gets added to the creation of the ASP.NET MVC project. Include the following namespaces in the HomeController.cs file.

C#

using Syncfusion.Pdf;
using Syncfusion.Pdf.Graphics;
using Syncfusion.Drawing;

5. A default action method named Index will be present in the HomeController.cs. Right-click the Index method and select ‘Go To View,’ you will be directed to its associated view page index.cshtml. 
6. Add a new button in the Index.cshtml as follows.

CSHTML

@{Html.BeginForm("ImageToPDF", "Home", FormMethod.Get);
    {
        <div>
            <input type="submit" value="Create Document" style="width:150px;height:27px" />
        </div>
    }
    Html.EndForm();
}

7. Add the new method ImageToPDF in HomeController.cs and include the following code sample to insert the GIF image to a PDF document in the ASP.NET Core platform.

C#

//Create a PDF document 
PdfDocument pdfDocument = new PdfDocument();
 
//Add a page 
PdfPage page = pdfDocument.Pages.Add();
PdfGraphics graphics = page.Graphics;
 
//Getting page size to fit the image within the page
SizeF pageSize = page.GetClientSize();
 
//Load the image file 
string path = _hostingEnvironment.WebRootPath + "/Data/Ani.gif";
Stream imageStream = new FileStream(path, FileMode.Open);
 
//Get the image stream and draw frame by frame
PdfTiffImage tiffImage = new PdfTiffImage(imageStream);
 
int frameCount = tiffImage.FrameCount;
for (int i = 0; i < frameCount; i++)
{
    //Selecting frame in TIFF
    tiffImage.ActiveFrame = i;
    //Draw TIFF frame
    page.Graphics.DrawImage(tiffImage, 0, 0, pageSize.Width, pageSize.Height);
}
 
//Saving the PDF to the MemoryStream
MemoryStream stream = new MemoryStream();
pdfDocument.Save(stream);
 
//Set the position as '0'.
stream.Position = 0;
 
//Download the PDF document in the browser
FileStreamResult fileStreamResult = new FileStreamResult(stream, "application/pdf");
 
fileStreamResult.FileDownloadName = "Sample.pdf";
 
return fileStreamResult;

A complete working sample to insert the GIF image to a PDF document in the ASP.NET Core platform can be download from GIFToPDFSample.zip.

Take a moment to peruse the documentation. You will find options such as inserting an image in a new PDF document and an existing PDF document, inserting vector image, image masking, replacing images, image pagination, apply transparency, and rotation to image and TIFF to PDF.

See Also:

Image to PDF in Windows Forms

Add image as background in PDF document