Get and Search Images in PDF

The ImagePlacementAbsorber allows you to search among images on all pages in a PDF document.

The following code snippet also work with Aspose.PDF.Drawing library.

To search a whole document for images:

1. Call the Pages collection’s Accept method. The Accept method takes an ImagePlacementAbsorber object as a parameter. This returns a collection of ImagePlacement objects.
2. Loop through the ImagePlacements objects and get their properties (Image, dimensions, resolution and so on).

The following code snippet shows how to search a document for all its images.

// For complete examples and data files, please go to https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void ExtractImagesFromPDF()
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdf_Images();

    // Open document using 'using' block to ensure proper disposal
    using (var document = new Aspose.Pdf.Document(dataDir + "SearchAndGetImages.pdf"))
    {
        // Create ImagePlacementAbsorber object to perform image placement search
        var abs = new Aspose.Pdf.ImagePlacementAbsorber();

        // Accept the absorber for all the pages
        document.Pages.Accept(abs);

        // Loop through all ImagePlacements, get image and ImagePlacement properties
        foreach (var imagePlacement in abs.ImagePlacements)
        {
            // Get the image using ImagePlacement object
            var image = imagePlacement.Image;

            // Display image placement properties for all placements
            Console.Out.WriteLine("image width: " + imagePlacement.Rectangle.Width);
            Console.Out.WriteLine("image height: " + imagePlacement.Rectangle.Height);
            Console.Out.WriteLine("image LLX: " + imagePlacement.Rectangle.LLX);
            Console.Out.WriteLine("image LLY: " + imagePlacement.Rectangle.LLY);
            Console.Out.WriteLine("image horizontal resolution: " + imagePlacement.Resolution.X);
            Console.Out.WriteLine("image vertical resolution: " + imagePlacement.Resolution.Y);
        }
    }
}

To get an image from an individual page, use the following code:

// For complete examples and data files, please go to https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void ExtractImageFromAnIndividualPage()
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdf_Images();

    // Open document using 'using' block to ensure proper disposal
    using (var document = new Aspose.Pdf.Document(dataDir + "SearchAndGetImages.pdf"))
    {
        // Create ImagePlacementAbsorber object to perform image placement search
        var abs = new Aspose.Pdf.ImagePlacementAbsorber();

        // Accept the absorber for all the pages
        document.Pages[1].Accept(abs);
    }
}