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Draw a Line on PDF with Python REST API

This tutorial shows you how to Python REST API can be used to draw a line on a PDF document by leveraging the Aspose.PDF Cloud SDK for Python. You will learn to automatically add lines to a PDF file, customize their appearance, and retrieve the updated document—all through a simple RESTful service. For more information about the PDF format, see the PDF file format guide.

Prerequisite

Steps to Add Line in PDF with Python Low Code API

  1. Create the PdfApi object with the required API key and SID for drawing lines.
  2. Create a LineAnnotation object and set the desired parameters (rectangle, color, start/end points, style, dates).
  3. Upload the PDF file to the cloud storage so that it can be modified.
  4. Call the PostPageLineAnnotations() method to draw the line on the specified page.
  5. Download the updated PDF file that now contains the line.

These steps illustrate how to add lines to a PDF using the Python REST interface. After initializing the PdfApi instance, you instantiate a LineAnnotation, configure its properties, upload the source PDF, and invoke PostPageLineAnnotations() to embed the line.

Code to Draw Lines on PDF with Python Low Code API

The snippet demonstrates drawing a line on a PDF with the Python‑based API. You can specify the intent, caption position, visibility of the caption, leader line offset, leader line extension, leader line style, and interior color. Ensure the Rect variable is initialized, as it defines the annotation’s bounding box, while the start and end points determine the line’s geometry.

For further PDF annotation techniques, such as highlighting text, refer to the article on Highlight PDF Document with Python REST API.

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