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Aspose.PDF for Python

Add Underline Text Annotations to PDF via Python SDK

API for adding annotations to PDF documents using Cloud Python SDK.

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Aspose.PDF Cloud SDK for Python Aspose.PDF Cloud SDK for Python

Overview

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How to add Underline Annotations to PDF via Cloud Python SDK

To add underline annotations into PDF, we’ll use Aspose.PDF Cloud Python SDK. This Cloud SDK assists Python programmers in developing cloud-based PDF creator, annotator, editor, and converter apps using Python programming language via Aspose.PDF REST API. Simply create an account at Aspose for Cloud and get your application information. Once you have the App SID & key, you are ready to give the Aspose.PDF Cloud Python SDK. If the python package is hosted on Github, you can install directly from Github:

Installation from Github


     
    pip install git+https://github.com/aspose-pdf-cloud/aspose-pdf-cloud-python.git

Package Manager Console Command

     
    pip install asposepdfcloud

Steps to add annotations to PDF via Python

Aspose.PDF Cloud developers can easily load & add underline annotations to PDF in just a few lines of code.

  1. Install Python SDK.
  2. Creates underline annotation with metadata (visual styling, text metadata, layout, extra attributes).
  3. Submit Annotation to PDF.
  4. Handles the server response.
  5. Downloads the updated file.
 

Add Underline Annotations to PDF using Python


    from annotations_helper import Config, PdfAnnotationsHelper, logging
    from asposepdfcloud import ApiClient, PdfApi, UnderlineAnnotation, Rectangle, Color, Point, AnnotationFlags, HorizontalAlignment, VerticalAlignment,AnnotationState

    class PdfAddUnderlineAnnotations:
        """Class for managing PDF annotations using Aspose PDF Cloud API."""
        def __init__(self, pdf_api: PdfApi, helper: PdfAnnotationsHelper):
            self.pdfApi = pdf_api
            self.helper = helper

        def append_underline_annotation(self):
            """Append a new underline text annotation to the PDF document."""
            if self.pdfApi:
                self.helper.uploadFile(Config.PDF_DOCUMENT_NAME, Config.LOCAL_FOLDER, Config.REMOTE_FOLDER)
                args = {
                    "folder": Config.REMOTE_FOLDER
                }
                new_annotation = UnderlineAnnotation(
                    rect = Rectangle(llx=100, lly=350, urx=450, ury=400),
                    name = 'Underline Text Annotation',
                    flags = [AnnotationFlags.DEFAULT],
                    horizontal_alignment = HorizontalAlignment.CENTER,
                    vertical_alignment = VerticalAlignment.TOP,
                    rich_text = Config.NEW_UL_ANNOTATION_TEXT,
                    subject = Config.NEW_UL_ANNOTATION_SUBJECT,
                    title = Config.NEW_UL_ANNOTATION_DESCRIPTION,
                    contents= Config.NEW_UL_ANNOTATION_CONTENTS,
                    z_index = 1,
                    color=Color(a=0xFF, r=0, g=0xFF, b=0),
                    quad_points = [
                        Point(10, 10),
                        Point(20, 10),
                        Point(10, 20),
                        Point(10, 10)
                    ],
                    modified = '03/27/2025 00:00:00.000 AM',
                )
                new_annotation.attribute_map["icon"] = "Icon"
                new_annotation.swagger_types["icon"] = "TextIcon"
                new_annotation.icon = "Star"
                try:
                    response = self.pdfApi.post_page_underline_annotations(Config.PDF_DOCUMENT_NAME, Config.PAGE_NUMBER, [new_annotation], **args)
                    if response.code == 200:
                        logging.info(f"append_underline_annotation(): annotation '{Config.NEW_UL_ANNOTATION_TEXT}' added to the document '{Config.PDF_DOCUMENT_NAME}'.")
                        self.helper.downloadFile(Config.PDF_DOCUMENT_NAME, Config.LOCAL_RESULT_DOCUMENT_NAME, Config.LOCAL_FOLDER, Config.REMOTE_FOLDER, "add_underline_")
                    else:
                        logging.error(f"append_underline_annotation(): Failed to add annotation to the document. Response code: {response.code}")
                except Exception as e:
                    logging.error(f"append_underline_annotation(): Error while adding annotation: {e}")