Using Link Annotations in PDF

Links are annotations that open URLs or move to certain positions within the same or within an external document when you click.

A Link Annotations is a rectangular area that can be placed anywhere on the page. Each link has a corresponding PDF action associated with it. This action is performed when the user clicks in the area of this link.

The following code snippet shows how to add Link Annotation to a PDF file using a phone number example:


    import aspose.pdf as ap

    document = ap.Document(input_file)
    # Create TextFragmentAbsorber object to find a phone number
    textFragmentAbsorber = ap.text.TextFragmentAbsorber("file")

    # Accept the absorber for the 1st page only
    document.pages[1].accept(textFragmentAbsorber)

    phoneNumberFragment = textFragmentAbsorber.text_fragments[1]

    # Create Link Annotation and set the action to call a phone number
    linkAnnotation = ap.annotations.LinkAnnotation(document.pages[1], phoneNumberFragment.rectangle)
    linkAnnotation.action = ap.annotations.GoToURIAction("www.aspose.com")

    # Add annotation to page
    document.pages[1].annotations.append(linkAnnotation)
    document.save(output_file)

Please try using the following code snippet to Get LinkAnnotation from PDF document.


    import aspose.pdf as ap

    document = ap.Document(input_file)
    linkAnnotations = [
        a
        for a in document.pages[1].annotations
        if (a.annotation_type == ap.annotations.AnnotationType.LINK)
    ]

    for la in linkAnnotations:
        print(la.rect)

The following code snippet shows how to Delete Link Annotation from PDF file. For this we need to find and and remove all link annotations on the 1st page. After this we will save document with removed annotation.


    import aspose.pdf as ap

    document = ap.Document(input_file)
    highlightAnnotations = [
        a
        for a in document.pages[1].annotations
        if (a.annotation_type == ap.annotations.AnnotationType.LINK)
    ]

    for hs in highlightAnnotations:
        document.pages[1].annotations.delete(hs)

    document.save(output_file)
Extra Annotations using Python