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Add Circle to PDF with Java REST API

Discover how Java developers can programmatically add a circular annotation to PDF files using Aspose PDF Cloud’s REST API. This concise tutorial walks you through the required setup, SDK configuration, and the exact API calls needed to draw and customize a circle on any page of a PDF document. For deeper insight into 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

This example walks you through the full end‑to‑end process of inserting a single circle into a PDF with the Java Low‑Code API. To add multiple circles—whether on the same page or across different pages—just supply a list of CircleAnnotation objects in a single PostPageCircleAnnotations() call.

If you’d rather highlight a specific area of a PDF page, explore our guide on Highlight PDF Document with Java REST API.

By now you’ve seen how to add circle to pdf with Java REST API, draw circle on pdf with Java Low Code API, draw a circle on a pdf with Java‑based API, insert circle in pdf with Java REST API, and add a circle to a pdf with Java Low Code API—all using the same straightforward, low‑code approach.