Extract images from document page area

GroupDocs.Parser provides the functionality to extract images from document page area by the GetImages(PageAreaOptions) and GetImages(int, PageAreaOptions) methods:

IEnumerable<PageImageArea> GetImages(PageAreaOptions options);
IEnumerable<PageImageArea> GetImages(int pageIndex, PageAreaOptions options);

The methods return a collection of PageImageArea objects:

PageThe page that contains the text area.
RectangleThe rectangular area on the page that contains the text area.
FileTypeThe format of the image.
RotationThe rotation angle of the image.
Stream GetImageStream()Returns the image stream.
Stream GetImageStream(ImageOptions)Returns the image stream in a different format.
Save(string)Saves the image to the file.
Save(string, ImageOptions)Saves the image to the file in a different format.

ImageOptions class is used to define the image format into which the image is converted. The following image formats are supported:

  • Bmp
  • Gif
  • Jpeg
  • Png
  • WebP

PageAreaOptions parameter is used to customize text areas extraction process. This class has the following members:

RectangleThe rectangular area that contains a text area.

Here are the steps to extract images from the upper-left corner:

  • Instantiate Parser object for the initial document;
  • Instantiate PageAreaOptions with the rectangular area;
  • Call GetImages(PageAreaOptions) method and obtain collection of PageImageArea objects;
  • Check if collection isn’t null (images extraction is supported for the document);
  • Iterate through the collection and get sizes, image types and image contents.

The following example shows how to extract only images from the upper-left corner:

// Create an instance of Parser class
using (Parser parser = new Parser(filePath))
    // Create the options which are used for images extraction
    PageAreaOptions options = new PageAreaOptions(new Rectangle(new Point(0, 0), new Size(300, 100)));
    // Extract images from the upper-left corner of a page:
    IEnumerable<PageImageArea> images = parser.GetImages(options);
    // Check if images extraction is supported
    if (images == null)
        Console.WriteLine("Page images extraction isn't supported");
    // Iterate over images
    foreach (PageImageArea image in images)
        // Print a page index, rectangle and image type:
        Console.WriteLine(string.Format("Page: {0}, R: {1}, Type: {2}", image.Page.Index, image.Rectangle, image.FileType));

More resources

GitHub examples

You may easily run the code above and see the feature in action in our GitHub examples:

Free online image extractor App

Along with full featured .NET library we provide simple, but powerfull free APPs.

You are welcome to extract images from PDF, DOC, DOCX, PPT, PPTX, XLS, XLSX, Emails and more with our free online GroupDocs Parser App.