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Insert Comment in PDF using Python REST API

This guide shows how to Python developers can use the REST API to insert a text annotation (comment) into a PDF file, complete with an icon that users can click to view the note.

Prerequisite

Steps for Adding Comments on PDF using Python REST API

  1. Add the Aspose PDF Cloud SDK and import the standard Python libraries for file and data handling.
  2. Initialise the PdfApi with your client ID and client secret so the script can communicate with Aspose Cloud.
  3. Choose the PDF file you want to annotate and decide which page will receive the comment.
  4. Upload the local PDF file to Aspose Cloud storage to make it available for processing.
  5. Create a TextAnnotation object, specifying its rectangle, message, author name, and visual style.
  6. Put the annotation into a list because the API expects a collection of annotations.
  7. Call PostPageTextAnnotations to apply the text annotation to the selected page.
  8. Inspect the response status to confirm that the annotation was added successfully.
  9. Download the annotated PDF from the cloud and save it locally as the final document.

These steps demonstrate how to add a sticky‑note style comment to a PDF using the Python REST interface: upload the file, define the annotation, apply it, verify the operation, and retrieve the updated PDF.

Code to Add Comment to PDF File using Python REST Interface

The sample code illustrates how to insert a comment in a PDF via the Python RESTful service. The Rect property of the TextAnnotation object defines the comment’s position relative to the bottom‑left corner of the page, while the pageNumber argument in PostPageTextAnnotations specifies the target page.

For a related task—comparing two PDFs in the cloud—see the article Compare PDF Files using Python REST API.

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