Extract Tagged Content from PDF

In this article you will learn how to to extract tagged content PDF document using Python.

Getting Tagged PDF Content

In order to get content of PDF Document with Tagged Text, Aspose.PDF offers tagged_content property of Document class.

Following code snippet shows how to get content of a PDF document with Tagged Text:

    import aspose.pdf as ap

    # Create PDF Document
    with ap.Document() as document:
        # Get Content for work with Tagged PDF
        tagged_content = document.tagged_content

        # Work with Tagged PDF content
        # Set Title and Language for Document
        tagged_content.set_title("Simple Tagged Pdf Document")
        tagged_content.set_language("en-US")

        # Save Tagged PDF Document
        document.save(path_outfile)

Getting Root Structure

In order to get the root structure of Tagged PDF Document, Aspose.PDF offers struct_tree_root_element property of ITaggedContent interface and root_element.

Following code snippet shows how to get the root structure of Tagged PDF Document:

    import aspose.pdf as ap

    # Create PDF Document
    with ap.Document() as document:
        # Get Content for work with Tagged PDF
        tagged_content = document.tagged_content

        # Set Title and Language for Document
        tagged_content.set_title("Tagged Pdf Document")
        tagged_content.set_language("en-US")

        # Properties StructTreeRootElement and RootElement are used for access to
        # StructTreeRoot object of pdf document and to root structure element (Document structure element).
        struct_tree_root_element = tagged_content.struct_tree_root_element
        root_element = tagged_content.root_element

Accessing Child Elements

In order to access child elements of a Tagged PDF Document, Aspose.PDF offers ElementList class. Following code snippet shows how to access child elements of a Tagged PDF Document:

    import aspose.pdf as ap
    from aspose.pycore import *

    # Open PDF Document
    with ap.Document(path_infile) as document:
        # Get Content for work with Tagged PDF
        tagged_content = document.tagged_content

        # Access to root element(s)
        element_list = tagged_content.struct_tree_root_element.child_elements

        for element in element_list:
            if isinstance(element, ap.logicalstructure.StructureElement):
                structure_element = cast(ap.logical_structure.StructureElement, element)

                # Get properties
                title = structure_element.title
                language = structure_element.language
                actual_text = structure_element.actual_text
                expansion_text = structure_element.expansion_text
                alternative_text = structure_element.alternative_text

        # Access to child elements of first element in root element
        element_list = tagged_content.root_element.child_elements[1].child_elements
        for element in element_list:
            if isinstance(element, ap.logicalstructure.StructureElement):
                structure_element = element

                # Set properties
                structure_element.title = "title"
                structure_element.language = "fr-FR"
                structure_element.actual_text = "actual text"
                structure_element.expansion_text = "exp"
                structure_element.alternative_text = "alt"

        # Save Tagged PDF Document
        document.save(path_outfile)