---
title: "Extract images from PDF in C# | Nutrient .NET SDK"
canonical_url: "https://www.nutrient.io/guides/dotnet/extraction/images/"
md_url: "https://www.nutrient.io/guides/dotnet/extraction/images.md"
last_updated: "2026-05-21T17:12:02.203Z"
description: "Learn how to extract image content from PDF documents programmatically in C# using Nutrient .NET SDK. Retrieve embedded images for further use."
---

# Extract images from PDFs in C#

This guide explains how to extract images from PDF documents using C#. Images can be added to a PDF document in the following ways:

- Embedded in the internal structure of the PDF document.

- Added to the PDF document as an image annotation.

Nutrient.NET SDK (formerly GdPicture.NET) currently enables you to extract images embedded in a PDF document. Extracting images from image annotations isn’t supported.

To extract images embedded in a PDF document, follow the steps below:

1. Create a `GdPicturePDF` object and a `GdPictureImaging` object.

2. Select the source document by passing its path to the `LoadFromFile` method of the `GdPicturePDF` object.

3. Determine the number of pages with the `GetPageCount` method of the `GdPicturePDF` object and loop through them.

4. Determine the number of images on the page with the `GetPageImageCount` method of the `GdPicturePDF` object and loop through them.

5. Extract the image by passing the index of the image to the `ExtractPageImage` method of the `GdPicturePDF` object.

6. Save the output in a new image file with the `SaveAsPNG` method of the `GdPictureImaging` object.

7. Release unnecessary resources.

The example below extracts all embedded images from a PDF document:

### C#

```csharp

using GdPicturePDF gdpicturePDF = new GdPicturePDF();
using GdPictureImaging gdpictureImaging = new GdPictureImaging();
// Select the source document.
gdpicturePDF.LoadFromFile(@"C:\temp\source.pdf");
// Determine the number of pages and loop through them.
int pageCount = gdpicturePDF.GetPageCount();
for (int page = 1; page <= pageCount; page++)
{
    gdpicturePDF.SelectPage(page);
    // Determine the number of images on the page and loop through them.
    int imageCount = gdpicturePDF.GetPageImageCount();
    for (int imageIndex = 0; imageIndex < imageCount; imageIndex++)
    {
        // Extract the image.
        int imageId = gdpicturePDF.ExtractPageImage(imageIndex);
        // Save the output in a new image file.
        gdpictureImaging.SaveAsPNG(imageId, @"C:\temp\page-" + page + "-image-" + imageIndex + ".png");
        // Release unnecessary resources.
        gdpictureImaging.ReleaseGdPictureImage(imageId);
    }
}

```

### VB.NET

```vb

Using gdpicturePDF As GdPicturePDF = New GdPicturePDF()
Using gdpictureImaging As GdPictureImaging = New GdPictureImaging()
    ' Select the source document.
    gdpicturePDF.LoadFromFile("C:\temp\source.pdf")
    ' Determine the number of pages and loop through them.
    Dim pageCount As Integer = gdpicturePDF.GetPageCount()
    For page = 1 To pageCount
        gdpicturePDF.SelectPage(page)
        ' Determine the number of images on the page and loop through them.
        Dim imageCount As Integer = gdpicturePDF.GetPageImageCount()
        For imageIndex = 0 To imageCount - 1
            ' Extract the image.
            Dim imageId As Integer = gdpicturePDF.ExtractPageImage(imageIndex)
            ' Save the output in a new image file.
            gdpictureImaging.SaveAsPNG(imageId, "C:\temp\page-" & page & "-image-" & imageIndex & ".png")
            ' Release unnecessary resources.
            gdpictureImaging.ReleaseGdPictureImage(imageId)
        Next
    Next
End Using
End Using

```

#### Used methods

- [`ExtractPageImage`](/api/gdpicture/GdPicture.NET.14.API~GdPicture14.GdPicturePDF~ExtractPageImage.html)

- [`GetPageCount`](/api/gdpicture/GdPicture.NET.14.API~GdPicture14.GdPicturePDF~GetPageCount.html)

- [`GetPageImageCount`](/api/gdpicture/GdPicture.NET.14.API~GdPicture14.GdPicturePDF~GetPageImageCount.html)

- [`LoadFromFile`](/api/gdpicture/GdPicture.NET.14.API~GdPicture14.GdPicturePDF~LoadFromFile.html)

- [`ReleaseGdPictureImage`](/api/gdpicture/GdPicture.NET.14.API~GdPicture14.GdPictureImaging~ReleaseGdPictureImage.html)

- [`SaveAsPNG`](/api/gdpicture/GdPicture.NET.14.API~GdPicture14.GdPictureImaging~SaveAsPNG.html)

- [`SelectPage`](/api/gdpicture/GdPicture.NET.14.API~GdPicture14.GdPicturePDF~SelectPage.html)

#### Related topics

- [Load a file](/guides/dotnet/load-a-file.md)

- [Save a file](/guides/dotnet/save-a-file.md)

---

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