PDF sticky Annotations using Python

Add Watermark Annotation

The most visible and easy to visualize and transmit is the Watermark Annotation. This is the best way to place in your PDF document a logo or any other sign that confirms its originality.

A watermark annotation shall be used to represent graphics that shall be printed at a fixed size and position on a page, regardless of the dimensions of the printed page.

You can add Watermark Text using WatermarkAnnotation at a specific position of the PDF page. The opacity of Watermark can also be controlled by using opacity property.

Please check the following code snippet to add WatermarkAnnotation.

    import aspose.pdf as ap

    document = ap.Document(input_file)
    # Create Annotation
    # Load Page object to add Annotation
    page = document.pages[1]

    # Create Annotation
    wa = ap.annotations.WatermarkAnnotation(page, ap.Rectangle(100, 0, 400, 100, True))

    # Add annotaiton into Annotation collection of Page
    page.annotations.append(wa)

    # Create TextState for Font settings
    ts = ap.text.TextState()
    ts.foreground_color = ap.Color.blue
    ts.font_size = 25
    ts.font = ap.text.FontRepository.find_font("Arial");

    # Set opacity level of Annotaiton Text
    wa.opacity = 0.5

    # Add Text in Annotation
    wa.set_text_and_state([ "HELLO", "Line 1", "Line 2" ], ts)

    document.save(output_file)

Get Watermark Annotation

    import aspose.pdf as ap

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

    for ta in watermarkAnnotations:
        print(ta.rect)

Delete Watermark Annotation

    import aspose.pdf as ap

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

    for ta in watermarkAnnotations:
        document.pages[1].annotations.delete(ta)

    document.save(output_file)