GroupDocs.Annotation for .NET

We are pleased to announce another monthly release of GroupDocs.Annotation for .NET 19.1. API now allows you to cache page previews and implement possibility to display distance annotation caption for Slide, Cell and Diagram formats. Apart from that, line width issue in Slides is fixed. Please follow the release notes here for further details. We’d recommend you to download the new version of the API to enhance your document annotation experience.


  • Add possibility to cache page previews
  • Implement possibility to display distance annotation caption for Slides, Cells and Diagrams
  • Add support of older format for Slides (.ppt), Cells (.xls) and Words (.doc)


  • Refactor logic for getting pages for Slides documents
  • Refactor PdfToPng saver

Bug Fixes

  • Line width not set in Slides
  • Application is consuming 100% resources usage while loading document
  • Issue when opening password protected documents
  • AnnotationImageHandler.GetPages exception in trial mode (for documents with more than 2 pages)
  • When removing annotations, stream is not closing

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.