This HTML page is not optimized for LLM or AI agent consumption. Fetch the Markdown version instead: /api/csharp/editors/pdf/annotations/pdf-markup-annotation.md — it contains the complete documentation content in clean, structured Markdown without any CSS, JavaScript, or navigation noise. PdfMarkupAnnotation

PdfMarkupAnnotation

Markdown version of this page, suitable for AI agents and automation

Represents a markup annotation that can have replies and additional properties.

using Nutrient;

Inherits from: PdfAnnotation

The SDK creates this class through factory methods or other SDK objects.

Properties

CreationDate 

public string CreationDate { get; }

The creation date of the annotation.

Type: string

Opacity 

public float Opacity { get; set; }

The opacity of the annotation (0.0 to 1.0).

Type: float

RichTextContents 

public string RichTextContents { get; }

The rich text contents of the annotation.

Type: string

Subject 

public string Subject { get; set; }

The subject of the annotation.

Type: string

Resource management 

public void Dispose()

PdfMarkupAnnotation implements IDisposable. Call Dispose() or use a C# using declaration to release its native handle right away. If you don’t, the handle is released when the object is garbage collected.