GroupDocs.Annotation (nuget): GroupDocs.Annotation for .NET is a lightweight and yet powerful library which offers a wide range of graphics, text and watermark annotation types. Apply annotation to a document and export results into desired format. Annotate PDF, DOCX/DOC, PPTX/PPT, XLSX/XLS, JPG, PNG, TIFF, VSDX/VSD, ODT, ODS, ODP, EML, HTML and many others formats, collaborate, comment and review documents with GroupDocs.Annotation for .NET API.  Features:     * Graphics annotations         - Area – marks an area with a rectangle and adds notes to it;         - Arrow – draws an arrow on a document;         - Distance – measures a distance between objects in a document;         - Point – sticks comments to any point in a document;         - Polyline – draws shapes and freehand lines;         - Redaction – fills black rectangle with fixed position (used if you want to hide some text);         - TextField – adds rectangle with a text inside;         - Ellipse – draws elliptic annotation in a document.     * Text annotations         - Highlight – highlights and comments selected text;         - Replacement – replaces original text with user’s text;         - Strikeout – marks text with a strikethrough styling;         - Underline – marks text with a underline styling.     * Watermark annotations         - Horizontal - adds horizontal text watermark;         - Diagonal - adds diagonal text watermark.     * Collaboration         - Each annotation type support comment collaboration. Add, remove or reply to comments for any annotation.     * Storage customization         - Custom interfaces for input/output/cache data are provided. This way any type of storage can be supported – Amazon S3, Dropbox, Google Drive, Windows Azure and others.  Supported document formats:     * Portable Document Formats - PDF (PDF/A-1a, PDF/A-1b, PDF/A-2a);     * Microsoft Word documents - DOC, DOCX, DOCM, DOT, DOTX, RTF;     * Microsoft Excel spreadsheets - XLS, XLSX, XLSM, XLSB, CSV;     * Microsoft PowerPoint presentations - PPT, PPTX, PPS, PPSX;     * Microsoft Visio diagrams - VSD, VSDX, VSS, VST;     * Open Document formats - ODT, OTT, ODS, ODP;     * Image - TIFF, TIF, JPG, JPEG, PNG, GIF, BMP;     * Email - EML;     * Autocad - DWG, DXF;     * Markup - HTM, HTML.  For more details on the GroupDocs.Annotation for .NET API, please visit product website at: https://products.groupdocs.com/annotation/net  Note: GroupDocs.Annotation for .NET will run in evaluation mode. In order to test full features of the product, please request a free 30-day temporary license.
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