Extract Image from Word Document

On this page we will look at how to extract image from a document using Aspose.Words or Open XML SDK.

Aspose.Words

In Aspose.Words, use the Shape class to work with images. To select all shape nodes use the GetChildNodes method and to extract image data use the ImageData property.

The following code example shows how to extract images from a document and save them as files:

// For complete examples and data files, please go to https://github.com/aspose-words/Aspose.Words-for-.NET.git.
Document doc = new Document(MyDir + "Extract image.docx");

// Get the collection of shapes from the document,
// and save the image data of every shape with an image as a file to the local file system.
NodeCollection shapes = doc.GetChildNodes(NodeType.Shape, true);

int imageIndex = 0;
foreach (Shape shape in shapes.OfType<Shape>())
{
    if (shape.HasImage)
    {
        // The image data of shapes may contain images of many possible image formats. 
        // We can determine a file extension for each image automatically, based on its format.
        string imageFileName =
            $"ExtractDocumentImages.{imageIndex}.Aspose.Words{FileFormatUtil.ImageTypeToExtension(shape.ImageData.ImageType)}";
        shape.ImageData.Save(ArtifactsDir + imageFileName);
        imageIndex++;
    }
}

Open XML SDK

You can also do the same using the Open XML SDK. At the same time, note that it looks somewhat more complicated and more cumbersome.

The following code example shows how to extract images from a document and save them as files:

// For complete examples and data files, please go to https://github.com/aspose-words/Aspose.Words-for-.NET.git.
public void ExtractDocumentImagesOpenXml()
{
    using (WordprocessingDocument wordDocument = WordprocessingDocument.Open(MyDir + "Extract image.docx", false))
    {
        MainDocumentPart mainPart = wordDocument.MainDocumentPart;

        // Loop through each ImagePart in the document.
        int imageIndex = 0;
        foreach (var imagePart in mainPart.ImageParts)
        {
            // Get the image extension.
            string imageExtension = GetImageExtension(imagePart.ContentType);
            if (imageExtension != null)
            {
                // Create a file name for the image.
                string imageFileName = Path.Combine(ArtifactsDir, $"ExtractDocumentImages.{imageIndex}.OpenXML{imageExtension}");

                // Save the image to the output directory.
                using (var stream = imagePart.GetStream())
                using (var fileStream = new FileStream(imageFileName, FileMode.Create, FileAccess.Write))
                    stream.CopyTo(fileStream);

                imageIndex++;
            }
        }
    }
}

static string GetImageExtension(string contentType)
{
    switch (contentType)
    {
        case "image/jpeg":
            return ".jpg";
        case "image/png":
            return ".png";
        case "image/gif":
            return ".gif";
        case "image/bmp":
            return ".bmp";
        default:
            return null; // Unsupported image type.
    }
}

You can download the sample file of this example from Aspose.Words GitHub.

For more information about Aspose.Words features please visit How to Extract Images from a Document.