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Add Circle to PDF with Java REST API

This short guide shows how to Java developers can programmatically PDF files to insert a circular annotation using Aspose PDF Cloud’s REST interface. You’ll learn the required setup, how to configure the SDK, and the exact calls needed to draw and customize a circle on any page of a PDF document. For more information about the PDF format, see the PDF file format page.

Prerequisite

Steps to Draw Circle in PDF with Java REST Interface

  1. Configure the PdfApi class object by providing your API key and application SID.
  2. Create a CircleAnnotation instance and define the rectangular bounds and color for the circle.
  3. Assign the required creation and modification dates to the annotation.
  4. Upload the target PDF file to Aspose Cloud storage so the annotation can be applied.
  5. Invoke the PostPageCircleAnnotations() method to render the circle within the specified rectangle.
  6. Download the updated PDF file that now contains the circle annotation.

These steps illustrate how to insert a circle in a PDF with the Java REST API. The CircleAnnotation object defines the circle’s size, position, and visual attributes. After uploading the source PDF, setting the mandatory dates, and calling PostPageCircleAnnotations(), the circle appears on the chosen page.

Code to Add Circle in PDF with Java RESTful Service

The snippet demonstrates the complete workflow for adding a single circle to a PDF using the Java Low‑Code API. You can repeat the process to draw multiple circles on the same page or on different pages by supplying a list of CircleAnnotation objects to a single PostPageCircleAnnotations() call.

If you need to highlight a region of a PDF page instead, see the article on Highlight PDF Document with Java REST API.

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