GroupDocs.Annotation for .NET

This month release of GroupDocs.Annotation for .NET 18.9 comes up with some improvements and fixes. Using this latest version, you can annotate documents with improved pen styles. We therefore recommend you to download this latest release of the API to enhance your document annotation experience.


  • FontColor cleanup in Slides

  • PenStyle property for following formats:

  • Words

  • Cells

  • Diagrams

  • PDF

  • Slides

  • Images

Bug Fixes

  • TIFF/Multi TIFF file is either corrupted or black and white when annotated
  • Unstable sorting for Slides and Diagrams documents

Available Channels and Resources

Here are a few channels and resources for you to download, learn, try and get technical support on GroupDocs.Annotation:


We always appreciate and welcome to our valuable users to share their feedback to improve this product. We will be happy to know your thoughts and suggestions. Just create a forum thread and our dedicated support team will be there to respond.