Annotate Text or Images in Documents
Empower your .NET Applications to Add, Edit & Remove all Popular Annotation Types from over 50 document formats for an Easier & Efficient Collaboration.
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GroupDocs.Annotation for .NET
GroupDocs.Annotation for .NET is a comprehensive set of APIs that helps you build document annotation management applications in C#, ASP.NET and other related .NET technologies. You can create and work with all popular annotation types, such as area, point, text, ellipse, link, underline, polyline, arrow, distance, watermark, image etc for PDF, HTML, Microsoft Office Word, Excel spreadsheets, PowerPoint presentations, Visio, images, CAD drawing and various other formats. The document annotator library allows you to export documents after adding annotations, comments or highlighted notes back to its original format. It also gives you a handy set of data objects through which you can customize annotations as per your requirements.
GroupDocs.Annotation for .NET Features
Add, Edit & Remove Annotations and Replies in Data Storage
Export Annotations from Data Storage to Document
Metered License – Controlled Billing by Paying According to API Usage
Assign User Access Rights to Restrict Annotation Activities on Document
Single Function Call to Fetch All Annotations of a Document
Assign Value to Point Annotation or Move Existing Point Value
Add Link Annotation to PDF, Word & PowerPoint Slides
Set Background Color of an Annotation or Remove all the Annotations from Document
Storage Independence via your own Data Storage or Default Inner “XML” Storage
Annotate PDF files with Accuracy – Get Image Representation of PDF Document & Cache Page Previews
Get Text Coordinates of Text Annotation in Image Representation of Document
Link User Comments to Area Annotation & Support for Nested Comments
Use Arrow Annotation for pointing to Particular Content
Use Distance Annotation to Draw a Line that Represents Distance among Objects
Point based Annotation that when Clicked Pops Window to Add Comments
Create a Connected Sequence of Line Segments Created as a Polyline Annotation
Create Straight Line Segments, Arc Segments, or a combination of the both
Mark Document Areas Proposed for Redaction
Add Image Annotation to PDF, Diagrams, Word, Excel, Presentations & Images
Add Text Field & Text based Stamp or Watermark in Document
Strike Through, Underline or Replace Particular Text in a Document
Resize Annotation by assigning new Height & Width Parameters
Get Thumbnails of Document Pages. Manage a Variety of Annotated Docs for Images & Diagrams
Export Annotations to & Work with Multi-page TIFF files
Adjust Vertical and Horizontal Alignment for Watermark Annotation
Add Text Horizontal Alignment for Text Field
Support for Multiple Types of Annotation
GroupDocs.Annotation for .NET enables you to work with various types of annotations. This gives freedom and ease of communication while collaborating with your team on tasks. You can use annotations, such as, area annotation (mark an area as rectangle and add notes to it), point annotation (stick comments at any point in document), text annotation (add comment to selected text), strikeout/underline annotation (applied to a paragraph), polyline annotation (draw shapes and freehand lines), arrow annotation (arrow pointer with attached comments), ellipse annotation (display text inside the ellipse), distance annotation (draw a line that represents distance among objects), link annotation (add web links to supported document formats), and watermark annotation (text stamp or watermark can be added in document).
Apply Text Annotation using C#
// Initialize list of AnnotationInfo
List<AnnotationInfo> annotations = new List<AnnotationInfo>();
// Initialize text annotation
AnnotationInfo textAnnotation = new AnnotationInfo
{
Box = new Rectangle((float)265.44, (float)153.86, 206, 36), Type = AnnotationType.Text
};
// Add annotation to list
annotations.Add(textAnnotation);
// Get input file stream
Stream inputFile = new FileStream("D:/input.pdf", FileMode.Open, FileAccess.ReadWrite);
// Export annotation and save output file
CommonUtilities.SaveOutputDocument(inputFile, annotations, DocumentType.Pdf);
Properties used in Data Storage
GroupDocs.Annotation for .NET API provides a comprehensive set of data objects with properties, used in data storage. You can work with Annotation (coordinates, dimensions, type, color, frame style, background color etc.), Annotation Collaborator (ID, document, access rights etc.), Annotation Reply (reply, parent annotation, GUID, message, time etc.), Document (GUID, name, owner, type, access rights etc.), User (ID, nick, email, password, photo etc.).
Access Rights Management
GroupDocs.Annotation for .NET API offers easy way to manage access rights of annotations. The properties that you can assign or revoke include View, Annotate, Download, Export, Delete etc.
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