GroupDocs.Annotation 20.1.0

Its an on-premise API that seamlessly integrates document annotation features into your .NET applications. Apply graphic, text and watermark-based annotations.

Document Annotation Features

• Add, remove or reply to annotation comments.
• Import & export document annotations.
• Render document pages as images.
• Generate document thumbnails or document image preview.
• Get list of supported file formats.
• Fetch document information, such as, page count & file size.
• Extract annotations from a document and serialize to XML format.
• Update specific annotation properties such as size, color and so on.

Supported Microsoft Office Formats

Microsoft Word: DOC, DOCM, DOCX, DOT, DOTM, DOTX, RTF Microsoft Excel: XLS, XLSB, XLSM, XLSX Microsoft PowerPoint: PPT, PPTX, PPSX, PPS Microsoft Visio: VSD, VSDX, VSS, VST

Other Popular Formats

Portable: PDF (PDF/A-1a, PDF/A-1b, PDF/A-2a) OpenDocument: ODT, ODS, ODP Images: TIF, TIFF, JPG, JPEG, PNG, BMP AutoCAD: DWG, DXF Email: EML Web: HTML Others: DCM

Graphic Annotation Types

Area: marks an area with a rectangle. Arrow: draws an arrow on a document. Distance: measures a distance between objects in a document. Ellipse: draws elliptic annotation in a document. Point: sticks comments to any point in a document. Polyline: draws shapes and freehand lines. Resource Redaction: fills black rectangle with fixed position. Text Field: adds rectangle with text inside.

Text Annotation Types

Highlight: highlights selected text. Link: adds a hyperlink to the document. Replacement: replaces original text with user’s text. Strikeout: marks text with a strike-through style. Text Redaction: fills part of text with black rectangle. Underline: marks text with an underline text styling.

Watermark Annotation Types

Diagonal: adds diagonal text watermark. Horizontal: adds horizontal text watermark.

API Supported Platforms

.NET Standard 2.0: Any type of .NET Standard 2.0 application is supported. .NET Framework: Any type of .NET Framework version 2.0 (or later) application is supported, including ASP.NET, Web Services, WinForms, WPF and others. Windows Azure Mono

Getting Started with GroupDocs.Annotation for .Net

Simply execute Install-Package GroupDocs.Annotation from Package Manager Console in Visual Studio to fetch & reference GroupDocs.Annotation assembly in your project. If you already have GroupDocs.Annotation for .NET and want to upgrade it, please execute Update-Package GroupDocs.Annotation to get the latest version.

Please check the GitHub Repository for common usage scenarios.

Save Annotation-only Pages of PDF File via C#

// for this example input file must have at least 10 pages
using (Annotator annotator = new Annotator(“template.pdf”))
{
    AreaAnnotation area = new AreaAnnotation()
    {
        Box = new Rectangle(100, 100, 100, 100),
        BackgroundColor = 65535,
        PageNumber = 1
    };
    EllipseAnnotation ellipse = new EllipseAnnotation()
    {
        Box = new Rectangle(100, 100, 100, 100),
        BackgroundColor = 123456,
        PageNumber = 9
    };
    annotator.Add(new List<AnnotationBase>() { area, ellipse });
    annotator.Save(“output.pdf” new SaveOptions { OnlyAnnotatedPages = true});
}

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