Manage interactive and explanatory annotations to specific words, phrases and regions of the documents content in any cross platform application. GroupDocs.Annotation for .NET API allows developers to seamlessly enhance their applications with the capability to annotate text or images in a document. Annotation can be applied in form of comments, explanations with highlighted notes, watermark, polyline and much more. Annotator API supports PDF, Microsoft Word DOCX, Excel XLSX and PowerPoint PPTX documents.

How to Annotate – Using GroupDocs.Annotation for .NET API annotations are created and rendered in a separate layer over displayed documents, so that original files are not modified. They can be stored as a set of JSON files or in a DB, as well as merged with the original file and exported to PDF or Word document.

Advanced Document Annotation API Features

Annotate any PDF, DOCX, XLSX and PPTX documents Multiple markup and commenting tools Reply based comments Highlight Text Annotation Custom stamp Annotation Threading in comments Simultaneous document annotations by multiple users Save annotations in different objects like JSON files, Databases or merge with original file Export annotations to separate PDF or Word file Import Annotations Abstract storage option – achieve it by using implemented interface provided by API User Management – Abstract-ready user management Annotation Compatibility - Annotations added are compatible with native PDF annotations Metered licensing.

Core Annotations – markup and commenting tools
Area Annotation – Mark an area for annotation in form of notes. Area can be a line, paragraph or portion of document
Point Annotation – attach comments to any point
Text Annotation – add explanation to any selected text
Strikeout / Underline Annotation – mark up text or revision instructions by editors with Strikeout or underline
Text replacement -Replace selected text
Text and Area redaction – blackout selected text and area within the document
Polyline – draw shapes and lines.
Pointer/arrow – attach arrows with notes
Watermark – add a watermark
Ruler or Distance Annotation – measure the distance between objects
Undo/redo – cancel or reverse annotations

Only for V.I.P