How to extract images from ASP.NET Core PDF?
The Syncfusion Essential® PDF is a .NET PDF library used to create, read, and edit the PDF documents. Using this library, you can extract the images from a PDF document in ASP.NET Core.
Steps to extract images from PDF document in ASP.NET Core:
- Create a new C# ASP.NET Core web application project.
- Select the web application pattern (Model-View-Controller) for the project.
- Install the Syncfusion.Pdf.Imaging.Net.Core NuGet package as a reference to your .NET Standard application from nuget.org.
- A default controller with name HomeController.cs gets added on creation of ASP.NET MVC project. Include the following namespaces in the HomeController.cs file.
C#
using Syncfusion.Pdf; using Syncfusion.Pdf.Parsing; using Syncfusion.Pdf.Exporting;
VB.NET
Imports Syncfusion.Pdf Imports Syncfusion.Pdf.Parsing Imports Syncfusion.Pdf.Exporting
- A default action method named Index will be present in HomeController.cs. Right click the Index method and select ‘Go To View’ where you will be directed to its associated view page index.cshtml.
- Add a new button in Index.cshtml as follows.
CSHTML
@{Html.BeginForm("ExtractImages", "Home", FormMethod.Get);
{
<div>
<input type="submit" value="Create Document" style="width:150px;height:27px" />
</div>
}
Html.EndForm();
}
- Add the new method ExtractImages in HomeController.cs and include the following code snippet to extract images from the PDF document in ASP.NET Core.
C#
//Load the PDF document
string path = _hostingEnvironment.WebRootPath + "/Data/Essential_Pdf.pdf";
Stream stream = new FileStream(path, FileMode.Open);
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(stream);
for (int i = 0; i < loadedDocument.Pages.Count; i++)
{
//Get the page
PdfLoadedPage page = loadedDocument.Pages[i] as PdfLoadedPage;
//Extract images
Stream[] images = page.ExtractImages();
for(int j=0;j<images.Length;j++)
{
//Save the image to local file
FileStream outStream = System.IO.File.OpenWrite("Test"+i.ToString()+".png");
images[0].CopyTo(outStream);
outStream.Flush();
}
}
//Dispose the stream
stream.Dispose();
VB.NET
'Load the PDF document
Dim path As String = _hostingEnvironment.WebRootPath & "/Data/Essential_Pdf.pdf"
Dim stream As Stream = New FileStream(path, FileMode.Open)
Dim loadedDocument As PdfLoadedDocument = New PdfLoadedDocument(stream)
For i As Integer = 0 To loadedDocument.Pages.Count - 1
'Get the page
Dim page As PdfLoadedPage = TryCast(loadedDocument.Pages(i), PdfLoadedPage)
'Extract images
Dim images As Stream() = page.ExtractImages()
For j As Integer = 0 To images.Length - 1
'Save the image to local file
Dim outStream As FileStream = System.IO.File.OpenWrite("Test" & i.ToString() & ".png")
images(0).CopyTo(outStream)
outStream.Flush()
Next
Next
'Dispose the stream
stream.Dispose()
A complete working sample to extract the images from the PDF document in ASP.NET Core platform can be downloaded from ExtractImages.zip.
By executing the program, you will get the image as follows.
Take a moment to peruse the documentation, where you will find options such as extracting image from PDF page, getting image information, and converting PDF to image.
Click here to explore the rich set of Syncfusion Essential® PDF features.
An online sample link to extract images from PDF document in ASP.NET Core.
Starting with v16.2.0.x, if you reference Syncfusion® assemblies from trial setup or from the NuGet feed, include a license key in your projects. Click this link to learn about generating and registering Syncfusion® license key in your application to use the components without trail message.
See Also:
Extract images from PDF file in Windows Forms
Extract a part of image from a PDF in Windows Forms
Convert PDF to image in Windows Forms
