Extract Links from the PDF File

Extract Links from the PDF File

Links are represented as annotations in a PDF file, so to extract links, extract all the LinkAnnotation objects.

1. Create a Document object.
2. Get the Page you want to extract links from.
3. Use the AnnotationSelector class to extract all the LinkAnnotation objects from the specified page.
4. Pass the AnnotationSelector object to the Page object’s Accept method.
5. Get all the selected link annotations into an IList object using the AnnotationSelector object’s Selected property.

The following code snippet shows you how to extract links from a PDF file.

void ExtractLinksFromThePDFFile() {
   
    // Load the PDF file
    String _dataDir("C:\\Samples\\");

    // Create Document instance
    auto document = MakeObject<Document>(_dataDir + u"UpdateLinks.pdf");

    // Add page to pages collection of PDF file
    auto page = document->get_Pages()->idx_get(1);


    auto selector = MakeObject<Aspose::Pdf::Annotations::AnnotationSelector>(MakeObject<Aspose::Pdf::Annotations::LinkAnnotation>(page, Rectangle::get_Trivial()));
    page->Accept(selector);
    auto list = selector->get_Selected();
    for (auto annot : list)
    {
        Console::WriteLine(u"Annotation located: {0}", annot->get_Rect());
    }
}