Features Overview

GroupDocs.Annotation for Python via .NET adds annotations, markup, and review comments across a wide range of supported document formats. Every annotation follows the same workflow: open a document with Annotator, add one or more annotations with add(), then save() the result — back to the original format or to another supported format. The capabilities below can be combined freely in a single pass.

Text markup

Mark up the text of a document with highlight, underline, strikeout, and squiggly-underline annotations, or replace and redact text. Text-markup annotations are positioned with a list of Point objects that describe the region they cover, and you can set colors such as font_color, underline_color, and squiggly_color (all passed as packed ARGB integers). See Add Annotations.

Graphic (shape) annotations

Draw geometric shapes over a page — area (rectangle), ellipse, point, arrow, distance, and polyline. Box-style shapes use a Rectangle (box) for position and size, while line-based shapes use Point coordinates. You can configure fill and pen colors (as ARGB integers) and the pen style. See Add Annotations.

Watermarks, text fields, links, and image stamps

Add a WatermarkAnnotation over a page, an editable TextFieldAnnotation, a clickable LinkAnnotation, or stamp an ImageAnnotation onto the document. These rich annotations let you label, brand, or augment a document without altering its underlying content. See Add Annotations.

Comments and replies

Attach an author and threaded review comments to any annotation. Each annotation carries a user (User with a Role of viewer or editor) and a list of replies (Reply objects with a comment, an author, and a timestamp), so you can model a full review conversation. See Comments and Replies.

Managing annotations

Add, update, get, and remove annotations. Retrieve all annotations, or filter by type with get(type=AnnotationType.X); remove a single annotation by id or instance, or clear them all. See Get Annotations and Remove Annotations.

Document information

Inspect a document before annotating it — read the page count, file type, page dimensions, and size through get_document_info(), and list every format the API supports with FileType.get_supported_file_types(). See Get Document Info and Supported File Formats.

Loading and saving

Load documents from a local path or from a stream, including password-protected files, by passing LoadOptions. When saving, write back to the original format, save to a different path, restrict the output to specific pages with SaveOptions.first_page/last_page (1-based), or save only certain annotation types. See Loading Documents and Saving Documents.

On-premise

GroupDocs.Annotation for Python via .NET runs entirely on your own infrastructure — your documents never leave your environment. The package is a self-contained wheel that bundles everything it needs, so no Microsoft Office, OpenOffice, Adobe Acrobat, or separate runtime has to be installed. See System Requirements for the supported platforms and native dependencies.